Painless Performance 60217 User manual

P/N 60217 & 60218
1999 - 2002 GM VORTEC FUEL INJECTION
4.8L, 5.3L & 6.0L
WIRE HARNESS INSTALLATION
INSTRUCTIONS
Manual P/N 90530
Third Edition July 2014
Copyright © November 2004
PAINLESS PERFORMANCE PRODUCTS
2501 Ludelle Street Fort Worth, Texas 76105 [phone]

TABLE OF CONTENTS
1.0 INTRODUCTION..................................................................................................................................... ii
2.0 ABOUT THESE INSTRUCTIONS................................................................................................................ ii
3.0 TOOLS NEEDED...................................................................................................................................... 1
4.0 PRE-INSTALLATION AND HARNESS ROUTING GUIDELINES...................................................................... 1
4.1 TRANSMISSION FUNCTION...................................................................................................... 1
4.2 GET TO KNOW THE ENGINE THAT YOU ARE USING.................................................................. 2
5.0 GENERAL INSTALLATION INSTRUCTIONS................................................................................................ 3
5.1 GROUNDING THE VEHICLE...................................................................................................... 3
5.2 ROUGH INSTALLATION............................................................................................................ 4
5.3 HARNESS ATTACHMENT........................................................................................................... 4
5.4 TERMINAL INSTALLATION INSTRUCTIONS................................................................................ 4
6.0 GM 99-02 VORTEC SYSTEM WIRE HARNESS INSTALLATION..................................................................... 5
6.1 CONTENTS OF THE 60217 & 60218 WIRE HARNESS KIT............................................................ 5
6.2 DASH SECTION INSTALLATION................................................................................................ 5
6.3 ENGINE SECTION INSTALLATION............................................................................................. 9
6.4 TAIL SECTION INSTALLATION.................................................................................................. 14
7.0 TROUBLE-SHOOTING INSTRUCTIONS...................................................................................................... 16
7.1 THE "CHECK ENGINE" LIGHT.................................................................................................... 16
7.2 RETRIEVING TROUBLE CODES FROM THE COMPUTER............................................................... 16
7.3 IDLE LEARN PROCEDURE......................................................................................................... 17
LIST OF FIGURES
Figure 6.1 Diagnostic Link Connector (DLC) & Check Engine Light ............................................................. 7
Figure 6.2 Brake Switch Connection ......................................................................................................... 7
Figure 6.3 Brake Switch Relay.................................................................................................................. 8
Figure 6.4 Air Pump Relay ...................................................................................................................... 8
Figure 6.5 Canister Purge Solenoid .......................................................................................................... 8
Figure 6.6 Canister Vent Solenoid ............................................................................................................ 9
Figure 6.7 Air Pump Connections .............................................................................................................. 9
Figure 6.8 Air Bleed Solenoid.................................................................................................................... 9
Figure 6.9 Fuel Pump Relay Connector...................................................................................................... 9
Figure 6.10 EGR Valve............................................................................................................................... 12
Figure 6.11 Knock Sensor Connector.......................................................................................................... 12
Figure 6.12 Oxygen Sensors ..................................................................................................................... 12
Figure 6.13 MAP Sensor ........................................................................................................................... 12
Figure 6.14 CMP Sensor ........................................................................................................................... 12
Figure 6.15 CKP Sensor ............................................................................................................................ 12
Figure 6.16 Injectors 1, 3, 5, 7................................................................................................................... 13
Figure 6.17 Injectors 2, 4, 6, 8 .................................................................................................................. 13
Figure 6.18 TPS Sensor ............................................................................................................................ 13
Figure 6.19 IAC......................................................................................................................................... 13
Figure 6.20 MAF Sensor ........................................................................................................................... 13
Figure 6.21 Driver Side Coil Connector....................................................................................................... 13
Figure 6.22 Passenger Side Coil Connector................................................................................................. 14
Figure 6.23 ECT Sensor............................................................................................................................. 14
Figure 6.24 VSS Output............................................................................................................................. 15
Figure 6.25 Transmission Sensor ............................................................................................................... 15
Figure 6.26 Park Neutral Position Sensor.................................................................................................... 16
Figure 6.27 Transmission Connector……………………………………………………………………………………………………… 16
Figure 7.1 Fuse Identification................................................................................................................... 16
LIST OF TABLES
Table 4.1 Compatible Parts..................................................................................................................... 3
Table 6.1 Dash Section Connections........................................................................................................ 8
Table 6.2 Engine Section Connections..................................................................................................... 11
Table 6.3 Tail Section Connections.......................................................................................................... 15
i

1.0 INTRODUCTION
You have purchased what we at Painless Performance Products believe to be the most up-to-date
and easiest-to-install automotive fuel injection harness on the market. It is designed for easy
installation, even if you have no electrical experience.
This harness is designed to be a complete wiring system for the fuel injection system on General
Motors 1999 - 2002 4.8L, 5.3L, & 6.0L Vortec injected engines and to control the 4L60E, 4L65E,
4L80E, 4L85E automatic or manual transmissions using the computer Service #12200411. This
includes all wiring that is needed by the computer to run and control the injection system and
transmission.
NOTE: This harness is not emissions legal unless used with kit #60322 or 60323.
To overcome the Passlock system in the 12200411 programming, the PCM will need to
have this feature removed.Contact Painless Performance with your proof of purchase for this
harness and we will flash your PCM for free. This harness along with the removal of the Passlock
software will get the Vortec engine and transmission up and operating but it is recommended that
you also have the computer reprogrammed to remove anything in the original factory programming
that relates to a device or devices that are not being used in your particular vehicle.
NOTE: This harness has no provision for operating cooling fans. If you wish to operate the fans
automatically, painless kit #30106 is available. This kit will turn the fans on at 205 degrees, and off
at 195. This kit is also available in a weatherproof version, part # 30127
NOTE: If you need your GEN III Vortec to be emission legal, the computers program must match the
emissions package to that specific engine.
NOTE: Most likely the check engine light will come on and stay on when using a computer without
removing the programming for any unused devises.
NOTE: Most remanufactured computers come without any programming in them and must be
programmed before they can be used.
NOTE: The program in your computer must match the transmission that you plan on using, the
manual, 4L60E, 4L65E, 4L80E, or 4L85E.
Usually the computer, relays and fuse block can easily be mounted under the dash. Most of the
wiring in the harness has been pre-terminated to the proper connector and all wire has been GM
color-coded. All wiring is TXL, 600 volt, and 125 degree centigrade with cross-link insulation.
This fuel injection system harness has been divided into three major groups:
ENGINE GROUP Includes wiring for the fuel injectors, ignition & charging systems, power/ ground
and sensors.
DASH GROUP Includes wiring for the ignition feed, assembly line diagnostic link (DLC)
connector, check engine light, computer connectors, brake switch, tachometer,
electric speedometer, fuse block, fuel pump relay connector and emissions
devises.
TAIL GROUP Include wiring for the VSS, park neutral position sensor, transmission and power
wire for fuel pump.
1

2.0 ABOUT THESE INSTRUCTIONS
These instructions provide information for the installation of the 60217 & 60218 Vortec Fuel Injection
Harness Kit. The contents of these instructions are divided into major Sections, as follows:
1.0 INTRODUCTION
2.0 ABOUT THESE INSTRUCTIONS
3.0 TOOLS NEEDED
4.0 PRE-INSTALLATION AND HARNESS ROUTING GUIDELINES
5.0 GENERAL INSTALLATION INSTRUCTIONS
6.0 60217 or 60218 VORTEC FUEL INJECTION HARNESS KIT
8.0 TROUBLE-SHOOTING INSTRUCTIONS
Sections are further divided into Paragraphs and Steps. Throughout, the Figure numbers refer to
illustration and the Table numbers refer to information in table form. These are located in or near
the sections or paragraphs to which they correspond. Always pay careful attention to any notes or
any text labeled CAUTION.
3.0 TOOLS NEEDED
In addition to your regular tools, you will need, at least, the following:
Crimping tool NOTE: USE A QUALITY TOOL TO AVOID OVER-CRIMPING.
Wire stripper
Continuity tester CAUTION: DO NOT USE A TEST LIGHT TO TEST THE COMPUTER OR
SENSOR WIRING OR YOU WILL DAMAGE THE COMPUTER.
Tech II or equivalent scanner (for presetting and diagnostic purposes)
Electric drill
1 5/8" Hole saw (for the rubber grommet in the firewall)
4.0 PRE-INSTALLATION AND HARNESS ROUTING GUIDELINES
The installation of your harness kit will consist of two parts:
~ The physical routing, positioning, securing, group/ individual wires and connectors.
~ The proper electrical connection of the individual circuits.
We cannot tell you how to route the harness in your automobile. That depends a great deal upon the
particular make of the automobile and what extent you want to secure and conceal the harness. We
do offer some general guidelines and routing practices starting in Paragraph 5.3, general
installation instructions in Section 5.0, and precise instruction concerning the electrical connections
you will have to make beginning in Section 6.0. To help you begin thinking through the installation
of your wire harness, read the following sections:
4.1 TRANSMISSION FUNCTION
If you are using a manual transmission, read Paragraph 4.1.1, then skip to the note
at the end of the section. If you are using the 4L60E, 4L65E, 4L80E, or 4L85E, then skip
Paragraph 4.1.1, and start at paragraph 4.1.2.
2

4.1.1 If you are using a manual transmission, tape off and store the purple and pink
(brake switch) wires, the park neutral position plugs/ wires and the 13-position
(transmission) round connector in the tail section.
4.1.2 If you ARE going to use a 4L60E, 4L65E, 4L80E, or 4L85E transmission,
you must use the vehicle speed sensor (VSS), transmission connector, park neutral
position connectors and correct brake switch. These are necessary to make the
transmission work correctly. The brake switch should be closed (electrically connected)
when the brakes ARE NOT being applied and open (not electrically connected) when
the brakes ARE being applied. This is the opposite of a standard brake light switch. If
you are using a pressure brake switch, a SPDT relay must be installed to unlock the
converter when the brakes are applied. The vehicle speed sensor lets the computer
know how fast the wheels are turning. The park neutral position sensor tells the PCM if
the transmission is in park or neutral.
NOTE: Emission devices. This harness has provisions for the emission devices. We
have rolled up the canister purge and canister vent, air pump, and air bleed solenoid
wiring in the dash section. It may be left there if these items are not to be used. If you
plan on using these items route these wires out to the engine compartment.
4.2 YOU SHOULD GET TO KNOW THE PARTICULAR ENGINE YOU ARE USING:
NOTE: The 99–02 4.8L, 5.3L & 6.0L Vortec engines had four oxygen sensors
from the factory, but we have provisions for only two, one on the driver side
and one on the passenger side of the engine. We removed the two rear
oxygen sensors since they originally where behind the catalytic converters
and most people don’t want to run more than two oxygen sensors. This
system has two rectangular connectors at the computer. A 12200411
computer is required for proper operation.
4.2.1 PPPI recommends the use of the following parts. See Table 4.1. These will meet
all requirements and are compatible with PPPI harnesses. The numbers given are GM
and AC Delco part numbers. You must use the computer part #12200411.
4.2.2 Familiarize yourself with the harness by locating each of the harness groups and
by looking at the connectors on the wire ends.
4.2.3 Decide where and how the computer, fuse block, and relays will be mounted.
PPPI wire harness kits are designed to mount either under the dash or in the kick panel
on the right side.
4.2.4 A good exercise is to lay out the wire harness on the floor beside your vehicle
and identify all the connectors and wires.
4.2.5 You will want to route the harness through and around open areas. Inside edges
provide extra protection from hazards and also provide places for tie wraps, clips, and
other support.
4.2.6 Route the harness away from sharp edges, exhaust pipes, and the hood, trunk,
and door hinges.
4.2.7 Plan where harness supports will be located. Use a support approximately every
6 inches unless the harness routes under the floor carpet.
3

Table 4.1 Compatible Parts
4.2.8 Allow enough slack in the harness at places where movement could possibly
occur (body to frame, frame to engine, etc.).
4.2.9 The wires should be bundled into harness groups. Use tape, nylon ties, or poly
split loom.
5.0 GENERAL INSTALLATION INSTRUCTIONS
~ DO NOT DISCONNECT THE BATTERY OR THE COMPUTER CONNECTORS WHILE THE
IGNITION IS ON.
~ DO NOT SHORT ANY WIRES IN THIS HARNESS TO GROUND (WITH THE EXCEPTION
OF LABELED GROUND WIRES) OR DAMAGE TO THE COMPUTER WILL RESULT.
~ GIVING OR RECEIVING A "JUMP START" MAY DAMAGE THE COMPUTER.
~ DO NOT USE A TEST LIGHT WHEN TESTING COMPUTER SENSORS OR COMPUTER
CIRCUITS. DAMAGE TO THE COMPUTER WILL RESULT!
~ WHEN ROUTING THE WIRES FOR THE VEHICLE SPEED SENSOR (IF USED) MAKING
CERTAIN THAT THEY ARE AT LEAST 12 INCHES AWAY FROM ANY IGNITION
WIRING (SPARK PLUG WIRES, ETC.).
NOTES:
~ There is a normal, small current drain on these fuel injected systems.
~ Each connector in this harness is different and will not fit in the wrong place.
~ When connecting the plugs to the computer
NEVER
FORCE ANY CONNECTOR. USE EXTREME CARE
~ The fuel pump you are using
to make sure none
of the pins in the computer are or become bent.
MUST maintain a constant pressure of 55-62 P.S.I.
(pounds per square inch). The Vortec fuel system does have a built-in regulator on
the fuel rail as in many earlier GM fuel injection systems.
5.1 GROUNDING THE VEHICLE
A perfectly and beautifully wired automobile will nevertheless have problems if everything is
not properly grounded. Don't go to the effort to installing a quality wire harness only to neglect
proper grounding.
Note: The installer of this harness is responsible for all ground wires not provided
with this part.
4
4.8L, 5.3L & 6.0L Vortec Fuel Injection Harness (99 - 02) Part # 60217 & 60218
Main Computer…………………Service#12200411
Fuel Pump Relay………………..Painless #80130
Brake Switch……………………Painless# 80176
MAF/ IAT Sensor……………….Delco# 213-364
Engine Coolant Temperature……Delco# 213-953
Oxygen Sensor (Pass. Side)……..Delco# AFS106
Oxygen Sensor (Drvr. Side)……..Delco# AFS106
TPS Sensor………………………Delco# 213-912
MAP Sensor…………………..…Delco# 213-796
Idle Air Control Motor…………..GM# 17113598
Knock Sensor………………….....Delco# 213-362
EGR Valve……………………….GM# 17113575
Coils………………………….…..GM# 10457730
Cam Position Sensor……………..GM# 12561211
Crankshaft Position Sensor………Delco# 213-354

5.1.1 Connect a ground strap or cable (minimum of a 4 Ga. wire) from the negative
battery terminal to the chassis (frame).
5.1.2 Connect a ground strap (minimum of a 4 Ga. wire) from the engine to the
chassis (frame). Do not rely upon the motor mounts to make this connection.
5.1.3 Connect a ground strap from the engine to the body.
5.2 ROUGH INSTALLATION
CAUTION: DISCONNECT THE POWER FROM YOUR VEHICLE BY REMOVING THE
NEGATIVE BATTERY CABLE FROM THE BATTERY.
Note: Make no wire connections or permanent mounting of any kind at this time.
5.2.1 Position the computer and sensors in their intend locations.
5.2.2 Drill a 1-5/8" hole for the firewall grommet near the computer for the engine
group and tail section to pass through.
5.2.3 Route the engine group and tail section through the hole. Push the grommet
(already installed on the harness) into the hole until it is seated.
5.2.4 Route the dash group over to the driver's side of the car.
5.2.5 Route the fuse block and relays to the place they will be mounted.
5.3 HARNESS ATTACHMENT
Note: Harness routing and shaping will be a time-consuming task. Taking your time
will enhance the beauty of your vehicle. Please take your time and be patient.
5.3.1 Permanently mount your computer. You should mount the fuse block and relays
at this time.
5.3.2 Mold harness groups to the contour of the dash, engine, frame, etc. Remember
to route harness away from sharp edges, exhaust pipes, hinges, and moving parts.
5.3.3 Attach harness groups to your automobile with clips or ties starting at the
computer and working your way outward.
Note: Do not tighten tie wraps or mounting devices at this time. Make all harness
attachments LOOSELY.
5.3.4 When used every 1-1/2" or so on the visible areas of the harness, colored plastic
wire ties make a very attractive assembly. Otherwise, a tie installed in other areas every
6" or so will hold the wires in place securely. REMEMBER TO TAKE YOUR TIME.
5

5.4 TERMINAL INSTALLATION INSTRUCTION
Note: In the following steps you will be making the circuit connections. Before you
start, you should carefully read Sections 6.0, and continually refer to the wire
charts, DOUBLE CHECKING your length calculations before cutting any wire or
making any connections. These directions are for the wires, which do not have a
connector already, installed on them.
5.4.1 Have all tools and connectors handy.
5.4.2 Select the correct terminal for the wire and application.
5.4.3 Determine the correct wire length and cut the wire. Remember to allow enough
slack in the harness and wires at places where movement could occur. DOUBLE
CHECK YOUR CALCULATIONS.
5.4.4 Strip insulation away from wire. Only strip as much insulation off as necessary
for the type of terminal lug you are using.
Note: In the following step, make sure that the terminal is crimped with
proper die in the crimping tool. An improper crimp will not make a good
connection. DO NOT OVER-CRIMP
.
5.4.5 Crimp the terminal onto the wire.
5.4.6 Connecting the wires and connectors throughout the harness is a simple process.
Make sure that each wire is properly routed and then attached.
5.4.7 When all the wires are attached, tighten the mounts and ties to secure the
harness permanently.
5.4.8 Attach the connectors to the computer. BE VERY CAREFUL NOT TO BEND
ANY PINS.
5.4.9 After all connections have been made throughout the harness, connect the
battery to the vehicle.
CAUTION: BE SURE THE IGNITION IS OFF WHEN YOU RECONNECT THE
BATTERY OR YOU WILL DAMAGE THE COMPUTER.
6.0 GM 99 – 02 4.8L, 5.3L & 6.0L VORTEC SYSTEM WIRE HARNESS INSTALLATION
INSTRUCTIONS
6.1 CONTENTS OF THE 60217 & 60218 WIRE HARNESS KIT
Take inventory to see that you have everything you are supposed to have in this kit, if
anything is missing, contact the dealer where you obtained the kit or contact Painless
Performance at [phone] or [phone].
The kit should contain the following items:
~ The main wire harness with the connectors already on the ends of most of the wires
~ Fuel Injection Installation Instructions P/N 90530 (This Booklet)
~ 4” & 7” tie wraps
6

6.2 DASH SECTION INSTALLATION
Note: If you have not already done so, read sections 4.0 and 5.0 of these
instructions and think through the installation of the harness before securing or
cutting any wires.
The wires in this group consist of the diagnostic link connector (DLC) (SEE FIGURE 6.1), the
check engine light (pre-mounted into a mounting bracket), fuel pump relay, emissions devises
(optional) and 6 other wires.
CAUTION: DO NOT MAKE ANY CONNECTIONS WHILE THE COMPUTER IS PLUGGED
INTO THE HARNESS.
Note: Wire color (Example: Blk/Wht) is one wire with a stripe. The second color
(the stripe) may not be bold. Observe all two-color wires closely.
A. AC REQUEST –
This circuit is used to inform the PCM that the AC compressor has been turned on. This
wire is to be spliced into the circuit from the AC switch to the AC compressor.
This is not a power supply for the compressor
B. The secondary Air Injection (AIR) system helps reduce hydrocarbon (HC), carbon
monoxide (CO), and oxides of nitrogen (NOx) exhaust emissions.
1. AIR PUMP (not equipped on all models) -The AIR pump assembly is mounted
in the right rear corner of the engine compartment and supplies the air to the AIR
system. The electric air pump sends air to the check valves near the exhaust
manifolds. The AIR pump is controlled by the Powertrain Control Module (PCM)
through the AIR pump solenoid relay. Battery voltage to the AIR pump is controlled
by the AIR pump solenoid relay. A vacuum operated shut off valve prevents air flow
during OFF periods. When the PCM provides a ground circuit for the secondary AIR
pump solenoid relay, battery voltage applies power to the AIR pump and the
solenoid. Intake manifold vacuum is then applied through the solenoid to the
vacuum operated shut off valve. The vacuum operated shut off valve then opens up
and allows air to be delivered to the check valves. See Figure 6.7
2. AIR RELAY (not equipped on all models) -The PCM controls the operation of
the AIR system through the AIR pump solenoid relay. When the PCM provides a
ground circuit for the secondary AIR pump solenoid relay, battery voltage is allowed
to power up the AIR pump and the solenoid. See Figure 6.4
3. AIR SOL (not equipped on all models) -The AIR solenoid is activated by the
AIR pump solenoid relay. The AIR solenoid allows intake manifold vacuum to the
shut off valve. The shut off valve then opens allowing air flow. See Figure 6.8
4. CAN VENT (not equipped on all models) -The Evaporative Emissions (EVAP)
control system used on all vehicles is the charcoal canister storage method. This
method transfers fuel vapor from the fuel tank to an activated carbon, charcoal,
storage device, canister, to hold the vapors when the vehicle is not operating. When
the engine is operating, the fuel vapor is purged from the carbon element by intake
air flow and consumed in the normal combustion process. See Figure 6.6
7

5. CANISTER PURGE (not equipped on all models) -The Evaporative Emissions
(EVAP)control system is the charcoal canister storage method. This method
transfers fuel vapor from the fuel tank to an activated carbon charcoal storage
canister, to hold the vapors when the vehicle is not operating. When the engine is
operating, the fuel vapor is purged from the carbon element by intake air flow and
consumed in the normal combustion process. See Figure 6.5
C. BRAKE SW (optional) - These circuits are used to provide power to the TCC solenoid in
the automatic transmission. If you are not using the electronic automatic transmission,
you may stow these wires. If you are using the electronic automatic transmission, these
wires will connect to the brake switch terminals that are normally used for cruise control
or TCC solenoid (normally closed). These wires do not connect to the terminals for
the brake lights.
D. DLC -The Data Link Connector (DLC) Figure 6.1 is used to communicate with the PCM.
The Powertrain On Board Diagnostic (OBD) System Check is an organized approach to
identifying a problem created by an electronic powertrain control system malfunction. The
Powertrain OBD System Check is the starting point for any drivability concern diagnosis.
The Powertrain OBD System Check directs the installer to the next logical step in
diagnosing a drivability concern. Understanding and using the Powertrain OBD System
Check correctly will reduce the diagnostic time and prevent the replacement of good parts.
Mount the DLC connector using the bracket that the light is mounted in allowing access to
the front of the connector allowing you to see the light while driving. See Figure 6.1
See table 4.1 for the recommended brake switch. If you are using the
recommended brake switch then you will wire it according to Figure 6.2. The pink wire to
the back of the switch in the illustration is the wire that has power on it whether or not
the brake is being applied. If your vehicle has a pressure type brake switch, you may use
a relay as shown in Figure 6.3. The relay must be a SPDT Relay and wired correctly or
it could result in a dangerous situation with the vehicle. The torque converter may not
unlock.
E. FUEL TEST (use as needed) - This circuit is used to power the electric fuel pump for
test purposes only. Temporarily apply fused positive power to this wire for testing the fuel
pump.
F. FUSE BLOCK IGNITION (mandatory) - This circuit is used to provide power to the
injection system. Connect this wire to a terminal/ wire from the ignition switch that is hot
in the RUN and CRANK
positions. Failure to provide power in the crank position will
result in PCM shutdown while the engine is trying to start. Note: You will know this circuit
is properly connected if the Check Engine Light is on when the ignition switch is on and
while starting.
G. TACH (optional) - This circuit is used to provide a signal from the PCM to the
tachometer. Connect this wire to the signal input on the tachometer.
H. VSS OUTPUT (optional) - This circuit is used to provide a signal from the PCM to the
electric speedometer. Connect this wire to the signal input on the electric speedometer
(not all aftermarket electric speedometers use the same signal for operation. Consult the
tech dept of the speedometer manufacture for compatibility).
8

FIGURE 6.1 DLC Connector & Check Engine Light
FIGURE 6.2 Brake Switch Connections
FIGURE 6.3 Brake Switch Relay
9

WIRE COLOR # OF WIRES LABELED CONNECT TO:
IN CONNECTOR
Brown, Red, Orange, Pink 4 Air Relay Relay
Pink, Green/White 2 Canister Purge Canister Purge Solenoid
Pink, White 2 Canister Vent Canister Vent Solenoid
Black, Red 2 Air Sol Air Bleed Solenoid
Black, Red 2 Air Pump Air Pump
Gray, Green/White, Black, Orange 4 Fuel Relay Fuel Pump Relay
Green/White VSS Output Speedometer
White Tach Tachometer
Pink, Purple Brake Switch Brake Switch
Pink Fuse Block Ignition Ignition Power
Green/ White AC Request Compressor B+
Gray Fuel Test See Paragraph 6.2.1
TABLE 6.1 Dash Section Connections
FIGURE 6.4 Air Pump Relay FIGURE 6.5 Canister Purge Solenoid
FIGURE 6.6 Canister Vent Solenoid FIGURE 6.7 Air Pump Connections
10
Fuel Tank

FIGURE 6.8 Air Solenoid FIGURE 6.9 Fuel Pump Relay Connector
6.3 ENGINE GROUP INSTALLATIONS
The engine group is designed to be separated into left (driver) and right (passenger)
sections. Each side is tie-wrapped separately, BUT NOT LABELED. The left side of the
has the connectors for the idle air control, throttle position sensor, mass air flow sensor,
and engine coolant sensor, all of which ARE labeled. When you begin routing, FIRST
separate the engine group into left and right sections, and place them accordingly.
NOTE: The air pump, air bleed, canister purge, and canister vent solenoid
connectors are rolled up in the dash section and must be routed out to the
engine compartment if these items are to be used. Note: Before you connect
any wires, separate the tail section from the engine group and place it out of the way.
A. ALT (optional) - This circuit is used to excite (turn on) the voltage regulator.
When using the stock alternator equipped on the 4.8, 5.3 or 6.0L Vortec engines,
this wire will connect to the Lterminal in the voltage regulator plug. You must
add either a small indicator light or suitable voltage reducer (82 Ohm/
5 Watt resistor). Painless offers a replacement alternator pigtail that includes
the proper resistor, part #30705. For any other charging system combinations,
contact the Painless tech dept.
B. CKP (mandatory) -The Crankshaft Position (CKP) sensor provides the PCM
with crankshaft speed and crankshaft position. The PCM utilizes this information
in order to determine if an engine misfire is present. The PCM monitors the CKP
sensor for momentary drop in crankshaft speed in order to determine if a misfire
is occurring. See Figure 6.15
C. CMP (mandatory) -The Camshaft Position (CMP) sensor provides the PCM
with camshaft speed and position. The PCM monitors the CMP sensor for any
momentary drops in camshaft speed in order to determine if a misfire is
occurring. See Figure 6.14
11

D. DRVR. & PASS COIL (mandatory) -The ignition system on this engine is a
multiple coil configuration called coil per plug. The ignition coil mounting bracket
is attached to the rocker cover. The secondary ignition wires are short compared
to a distributor ignition system wire. See Figure 6.21 & 6.22
E. ECT (mandatory) -The (PCM) supplies a 5.0 volt signal to the Engine Coolant
Temperature (ECT)sensor through a resistor in the PCM and measures the
voltage. The voltage is high when the engine is cold. The voltage is low when the
engine is hot. The PCM calculates the engine coolant temperature by measuring
the voltage. The engine coolant temperature affects most systems the PCM
controls. See Figure 6.23
F. EGR (optional) –An Exhaust Gas Recirculation (EGR), system is used to lower
oxides of nitrogen (NOx) emission levels. The EGR system accomplishes this by
feeding small amounts of exhaust gas back into the combustion chamber. High
combustion temperatures cause NOx. Combustion temperatures are reduced
when the air/fuel mixture is diluted with the exhaust gases. See Figure 6.10
G. GROUND (mandatory) - These circuits are used to provide ground for the
various devises. Connect these wires under a bolt in the engine block,
transmission, or cylinder head. These are the grounds for the entire injection
system. For best results from your EFI system, be certain your grounding
surfaces are clean and your connections are secure.
H. IAC (mandatory) -The purpose of the Idle Air Control Motor (IAC) is to control
engine idle speed. The IAC valve, mounted in the throttle body, controls the
amount of bypass air. See Figure 6.19
I. INJ #1 - #8 (mandatory) –The Multec 2 fuel injector assembly is a solenoid
operated device, controlled by the PCM that meters pressurized fuel to a single
engine cylinder. An injector that has been sitting for more than 6 months will
need to be cleaned/ replaced as the varnish residue in the fuel will cause the
injector to stick closed. This will keep the injector from delivering fuel as needed
by the injection system. See Figure 6.16 & 6.17
J. KNOCK (mandatory) –To control spark knock, a Knock Sensor (KS) system is
used. This system is designed to retard spark timing up to 20 degrees to reduce
spark knock in the engine. This allows the engine to use maximum spark
advance to improve drivability and fuel economy. See Figure 6.11
K. LEFT & RIGHT O2 SEN. (mandatory) –The PCM uses the signal voltage from
heated oxygen sensors in a Closed Loop to adjust the fuel injector pulse width.
In Closed Loop, the PCM adjust fuel delivery to maintain an air to fuel ratio which
allows the best combination of emission control and drivability. See Figure 6.12
L. MAF-IAT (mandatory) –The Mass Air Flow (MAF) sensor measures the
amount of air which passes through the sensor. The PCM uses this information to
determine the operating condition of the engine in order to control the fuel
delivery. A large quantity of air indicates acceleration. A small quantity of air
indicates deceleration or idle. See Figure 6.20
12

M. MAP (mandatory) –The Manifold Absolute Pressure (MAP) sensor responds
to changes in the intake manifold pressure as a result of engine load and speed.
The map sensor converts this to a voltage output. See Figure 6.13
N. STARTER B+ (mandatory) - These circuits are used to maintain memory in
the PCM and provide power to all heavy amp circuits. Connect these wires to the
battery post on the starter solenoid (the same post as the positive battery cable)
or to a positive battery source.
O. TPS (mandatory) –The TP sensor attaches to the side of the throttle body
opposite the throttle lever. The TP sensor senses the throttle valve angle and
relays that information to the control module. The control module requires
knowledge of throttle angle in order to generate the required injector control
signals, or pulses. See Figure 6.18
P. FAN#1 (GRN) FAN#2 (BLUE) – These wires connect to the ground wire
From the relays used for the cooling fans. The installer MUST
Programmer that he is going to use one or both of these wires so they can be
inform the ECM
activated when the ECM is programmed.
WIRE COLOR # OF WIRES LABELED CONNECT TO:
IN CONNECTOR
TABLE 6.2 Engine Section Connections
14
Black, Red, Green, Brown, Lt.Blue, Purple, Pink
Black, Red/ White, Green/ White, Brown/ White,
Lt.Blue/ White, Purple/ White, Pink
White, Purple, Brown, Gray, Red
Black, Tan, Black/ White, Pink, Yellow
Lt.Green/ Black, Lt.Green/ White, Lt.
Blue/ Black,
Lt. Blue/ White
Tan/ White, Purple/ White, Black, Pink
Tan, Purple, Black, Pink
Black/ White, Yellow/ Black, Lt.Green
Brown/ White, Pink/ Black, Red
Orange/ Black, Lt.Green, Gray
Gray, Black, Blue
Gray, Yellow
Black, Pink
Lt.Green/ Black, Pink
Pink/ Black, Pink
Lt.Blue/ Black, Pink
Black/ White, Pink
Yellow/ Black, Pink
Red/ Black, Pink
Blue/ White, Pink
Blue, Lt. Blue
Brown
Red (2)
Black (3), Black/ White (3)
7
7
5
5
4
4
4
3
3
3
3
2
2
2
2
2
2
2
2
2
2
DRVR. COIL
PASS COIL
EGR
MAF-IAT
IAC
LEFT O2 SEN
RIGHT O2 SEN
CKP
CMP
MAP
TPS
ECT
INJ #1
INJ #2
INJ #3
INJ #4
INJ #5
INJ #6
INJ #7
INJ #8
Knock
ALT
STARTER B+
GROUND
Drivers Coil
Passenger Coil
EGR Valve
Mass Air Flow Sensor
Idle Air Control Motor
Left Oxygen Sensor
Passenger Oxygen Sensor
Crankshaft Position Sensor
Camshaft Position Sensor
Manifold Absolute Pressure Sensor
Throttle Position Sensor
Engine Coolant Temperature Sensor
Driver Side Front Injector
Passenger Side Front Injector
Driver Side 2nd Injector
Passenger Side 2nd Injector
Driver Side 3rd Injector
Passenger Side 3rd Injector
Driver Side Rear Injector
Passenger Side Rear Injector
Knock Sensor
Alternator Exciter
Starter Solenoid Batt Terminal
Engine Ground

FIGURE 6.10 EGR Valve FIGURE 6.11 Knock Sensor Connector
FIGURE 6.12 Oxygen Sensor FIGURE 6.13 MAP Sensor
FIGURE 6.14 CMP Sensor FIGURE 6.15 CKP Sensor
13

FIGURE 6.16 Injectors 1, 3, 5, 7 FIGURE 6.17 Injectors 2, 4, 6, 8
FIGURE 6.18 TPS Sensor FIGURE 6.19 IAC Sensor
FIGURE 6.20 MAF-IAT Sensor FIGURE 6.21 Driver Side Coil Connector
15

FIGURE 6.22 Passenger Side Coil Connector FIGURE 6.23 ECT Sensor
Locate the tail section that you earlier separated from the engine group. Begin routing it
towards the rear of the vehicle. Be sure to avoid all sharp edges, moving or hot parts, or
anything else that may damage the harness.
If you ARE using a manual transmission, tape-up the 13-position connectors labeled TRANS,
PNP (2) and store them in the harness.
A. BACK-UP (optional)-This circuit is used to power the back-up lamps. This wire will
connect directly to the back-up light socket. You will need to splice a wire into this
circuit in order to accommodate two back-up lights.
B. FROM START SWITCH (optional)-This circuit is used to connect the start switch to
the neutral safety switch (omit this circuit if using anything other than an electronic
automatic transmission). Connect this wire to a circuit from the ignition switch start
position. This wire should only have power in the start position.
C. FUEL PUMP (mandatory) - This circuit provides power to the electric fuel pump.
Connect this wire to the positive side of the electric fuel pump. This wire only has
power for a few seconds when the ignition switch is turned on. It will have
constant power while the engine is cranking/ running.
D. INPUT SPEED SEN (optional) (not equipped on all models) –This connection is
only used on the 4L80E/ 4L85E transmissions. This will rarely be used and can be
stowed if not needed.
E. OUTPUT SPEED SEN (optional) –The Vehicle Speed Sensor (VSS) is a pulse
counter type input that informs the PCM how fast the vehicle is traveling. The VSS
system uses an inductive sensor, mounted in the tail housing of the transmission, and a
toothed reluctor wheel on the tail shaft. The teeth of the reluctor wheel alternately
interfere with the magnetic field of the sensor creating an induced voltage pulse as the
reluctor rotates.
16

F. PNP (optional) –The Transmission Range Switch (PRND) switch is mounted to the
side of the transaxle and is part of the Park Neutral Position (PNP) switch. The PRND
switch is used by the PCM to indicate the actual gear selected. The PRND is made up of
4 individual switches. The scan tool indicates ON or OFF for each switch depending on
the position of the gear selector lever. The combination of ONs and OFFs will indicate
the gear selected. If the combination of ONs and OFFs is invalid, a DTC is set.
G. TO STARTER RELAY (optional) - This circuit is used to connect the neutral safety
switch to the starter relay terminal #85 (omit this circuit if using anything other than an
electronic automatic transmission). Connect this wire to the circuit in terminal #85 of
the starter relay. DO NOT CONNECT THIS CIRCUIT DIRECTLY TO THE STARTER
SOLENOID. You can substitute Painless part #30202 (Hot Shot Relay) if the stock
starter relay is not available.
H. TRANS (optional) – These circuits are used by the PCM to determine vehicle speed,
gear position and control shift patterns.
WIRE COLOR # OF POSITIONS LABELED CONNECT TO:
IN CONNECTOR
TABLE 6.3 Tail Section Connections
FIGURE 6.24 VSS Sensor (4L60E) FIGURE 6.25 VSS & Input Speed Sensor,
Transmission Connection(4L80E)
17
Blue, Pink/White, Lt.Green, Red,
Yellow/Black, Black, Tan/Black, Brown,
Lt.Blue/White, Red/Black, Yellow, Pink,
White
Pink, Black/White, Purple/ White, Yellow,
Lt.Green
Black/ White, Gray, White, Yellow
Red/ Black, Blue/ White
Lt.Green/ Black, Purple/ White
Gray
Purple/ White
Lt.Green
Yellow
13
5
4
2
2
TRANS
PNP
PNP
INPUT SPEED SEN
VSS SEN
FUEL PUMP
FROM START SWITCH
BACK-UP
TO START RELAY
Transmission
Park Neutral Position
Sensor
Park Neutral Position
Sensor
Input Speed Sensor
Output Speed Sensor
Fuel Pump B+
Start Switch
Back-up Light Bulbs
Starter Relay Activation

FIGURE 6.26 Transmission Connection FIGURE 6.27 Park Neutral Position Sensor
6.5Converting the 4L60E Transmission Connector to a 4L80E Connector
*Note: Harness numbers 60217and 60218 have been wired for both the 4L60E and the 4L80E. All
harnesses have the transmission connector pre terminated to allow use of the 4L60E transmission. In
applications where a 4L80E is to be used, follow this procedure to change your transmission
connector to ensure all functions of the transmission work properly. See Figure 6.28 for repining the
transmission connector
1. With the terminal end of the connector and the arrow on top pointing towards you,
carefully remove the white retaining lock located in the center of the connector.
2. Locate the white wire located in terminal location S. Using a paper clip or small
screwdriver, gently lift the locking tab inside the connector and pull the wire from it’s
location.
3. Now locate the brown wire located in terminal location U. Using the same method,
remove the brown wire from it’s location
4. Gently insert the brown wire into terminal location S.
5. The white wire has no function with the 4L80E transmission; it needs to be taped up
and stowed in the harness in case a 4L60E is ever to be used.
Figure 6.28 Transmission Connector Pin Out
18