Whipple LT1 User manual

Installation Manual: GM LT1_A1R13E
Last Updated: February 12th, 2019
Page 1 of 36
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SUPERCHARGER INSTALLATION MANUAL
2014-2018 GM 5.3/6.2 LT1 TRUCK
2014-2019 GM 5.3/6.2L LT1 SUV
WHIPPLE SUPERCHARGERS
3292 NORTH WEBER AVE
FRESNO, CA 93722
TEL [phone]
FAX [phone]
www.whipplesuperchargers.com
A color PDF of this manual is available, email
[e-mail] for a copy
PREMIUM FUEL ONLY (91 OCTANE OR BETTER ALWAYS) RON+MON/2
CALIFORNIA AIR RESCOURCE BOARD EXECUTIVE ORDER #D231-48

Installation Manual: GM LT1_A1R13E
Last Updated: February 12th, 2019
Page 2 of 36
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INTRODUCTION
Before beginning installation, we encourage you to read this manual thoroughly before you begin any portion of the installation:
1. A quick parts check to make certain your kit is complete (see shipper parts list in packing paperwork). If you discover
shipping damage or shortage, please call our office immediately.
2. Review our limited warranty with care.
3. Always wear eye protection during installation.
4. Avoid spills, if one occurs, clean up and dispose of towels properly.
5. Never work on a hot engine.
6. Obey all traffic laws when testing the vehicle.
COMPETITION BASED PRODUCT MAY BE USED SOLELY ON VEHICLES USED IN SANCTIONED COMPETITION WHICH
MAY NEVER BE USED UPON A PUBLIC ROAD OR HIGHWAY, UNLESS PERMITTED BY SPECIFIC REGULATORY EXEMPTION
(VISIT THE “EMISSIONS” PAGE AT HTTP://WWW.SEMASAN.COM/EMISSIONS FOR STATE BY STATE DETAILS.
COMPETITION BASED PRODUCT IS LEGAL IN CALIFORNIA ONLY FOR RACING VEHICLES WHICH MAY NEVER BE USED,
OR REGISTERED OR LICENSED FOR USE, UPON A HIGHWAY.
IT IS THE RESPONSIBILITY OF THE INSTALLER AND/OR USER OF THIS PRODUCT TO ENSURE THAT IT IS USED IN
COMPLIANCE WITH ALL APPLICABLE LAWS AND REGULATIONS.
RECOMMENDED TOOLS AND SUPPLIES
The following items are not included in this supercharger kit and it is strongly recommended that they're used for ease of
installation or maximum performance:
Extra Components
2 gallons distilled water, 2 gallons GM approved coolant, 4”, 8” and 12” zip-ties, clean shop towels.
Tools
Torque wrench (1/4”, 3/8”, ½”) Safety glasses, standard and metric wrench set, 1 ½” hole saw, ¼”, 3/8”, ½” assorted
metric socket set, 3/8” assorted metric allen socket set, 3/8” assorted torx socket set, 8mm nut driver, screw driver set,
pinch clamp tool, wire cutters and drain pan (for coolant).
Tie Straps
These will be useful for securing the wiring harness away from the installation area as directed in the instruction manual.
They are inexpensive and will be very handy during installation.
Sealants
Blue Loctite™#242 or equivalent, Red Loctite™ #271 or equivalent. All bolts that need Loctite™ are marked with:
Loctite™ (#242 blue) threads, Loctite™ (#271 red) threads. Thread sealant such as pipe Teflon must be used
on all pipe threads.
Chemicals and lubricants
You will need some cleaner/degreaser such as carb cleaner. Motor oil and clear automotive-type grease (example
Lubriplate #105) will be useful as a lubricant and should be readily available during installation.
You’ll be required to fill your intercooler system with approx. 1 gallon of distilled water and GM approved engine coolant.
This is not supplied in the system, you can find the coolant at any local auto parts store. NEVER USE TAP WATER, as it
can corrode and create poor performance.

Installation Manual: GM LT1_A1R13E
Last Updated: February 12th, 2019
Page 3 of 36
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PRE-INSTALLATION CHECKLIST
Before installing your Whipple Supercharger Kit, complete the following checklist.
1. Verify Condition of Vehicle: Before the supercharger kit is installed, ensure the engine runs smoothly and that the
factory malfunction indicator light (MIL) is off. Only install the supercharger kit if the engine runs smoothly and the
MIL is off.
2. !! CAUTION !!
This product is intended for use only on STOCK, UNMODIFIED, WELL-MAINTAINED engines. Installation
on a worn-out or modified engine is not recommended without factory computer and fuel system
modifications. Custom engine configurations could require custom tuning and other supporting
modifications.
3. !! CAUTION !!
Use only 91 octane fuel or higher. If fuel of less than 91-octane is present in the vehicle fuel tank, the
tank must be completely drained and refilled with 91 or higher octane to 1/8th of a tank.
4. Verify Fuel System: Supercharger systems should only be installed on vehicles that have new or clean fuel filters.
5. Assess Cleanliness of Installation Area: Make sure your work area and the under-hood area are free from debris. This
supercharger is a high-quality, close-tolerance compressor and must not be subjected to contamination by dirt or any
type of foreign material. If necessary, vacuum around engine to remove any foreign material.
6. !! CAUTION !!
DO NOT remove the protective seal on the supercharger prior to installation. Foreign material entering
the supercharger will automatically void all warranties.
7. Identify Supercharger Kit Components: Before beginning installation, identify all the components of your Whipple
Supercharger Kit and ensure all items are present and undamaged.
8. !! CAUTION !!
Do not attempt to start the engine before adding the supplied Supercharger Oil to the supercharger!

Installation Manual: GM LT1_A1R13E
Last Updated: February 12th, 2019
Page 4 of 36
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COMMON ABBREVIATIONS
ABBREVIATION
DESCRIPTION
DTC
Diagnostic Trouble Code
ECT
Engine Coolant Temperature
EGR
Exhaust Gas Recirculation
ETC
Electronic Throttle Control
EVAP
Evaporative emissions system
FHSCS
Flat Head Socket Cap Screw
IAT
Inlet Air Temperature
IC
Intercooler
ID
Internal Diameter
IN/LB
Inch pounds
LB/FT
Foot pounds
MAF
Mass Air Flow
MAP
Manifold Absolute Pressure
MY
Model Year
OBD
On Board Diagnostics
OD
Outside Diameter
PCV
Positive Crankcase Ventilation
PSI
Pound per Square Inch
SC
Supercharger
SHCS
Socket Head Cap Screw
TPS
Throttle Pressure Sensor
TRQ
Torque
Symbol Key
Throughout this installation guide you will see the following symbols used:
NOTE
Used to indicate tips and information to aid in installation, maintenance, or use
of the supercharger.
!! CAUTION !!
Used to indicate precautions that must be taken to avoid damage to
the supercharger and associated components.
WARNING!!
Used to indicate precautions that must be taken to avoid bodily injury
as well as damage to the supercharger and associated components.

Installation Manual: GM LT1_A1R13E
Last Updated: February 12th, 2019
Page 5 of 36
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PRE-INSTALL INSPECTION WITH SCAN TOOL (VERIFY CONDITION OF
ENGINE)
NOTE: To insure compatibility It may be necessary to have the ECM/TCM updated by a GM Dealer
to the most current stock calibration before the Whipple calibration is installed. It is recommended
to do this before installing the supercharger kit. Many times, this will fix potential issues with GM’s
calibration updates.
1. It is advised to inspect the vehicle before install the supercharger kit as any potential problems can be found easier
before the SC installation.
2. Carefully remove the supercharger system from its packaging and locate the SCT downloader.
3. Connect the flash tool to the factory OBDII port, turn the ignition to “ON”. Read the DTCs and data from the
ADVANCED FEATURES prompt.
4. The car that you are installing the supercharger on should not have stored trouble codes. IF VEHICLE HAS A STORED
TROUBLE CODE OR HAS A DRIVEABILITY PROBLEM THIS SHOULD BE ADDRESSED BEFORE PROCEEDING.
5. The first data to be inspected is the LONG FUEL TRIMS. This data is a direct correlation of the air/fuel mixture.
PERFECT long fuel trims are 0 (this means the ECM is adding no fuel OR not subtracting fuel. In the REAL world, the
fuel trims -4 to +8 are considered to be correct).
6. With the engine warmed up at idle Inspect long fuel trim Bank 1 (1,3,5,7) and long fuel trim Bank 2 (2,4,6,8), if the
data is within -4 to +8 this is normal.
7. (Complete kits only) Make sure your battery is fully charged before installing, if not, install a battery charger to
maintain 14volts. Kits not using the Whipple supplied tune are not 50-state legal and are for off-road use only.
NOTE
**NOTICE: Installation of Whipple Supercharger products signifies that you have read this document and have
agreed to the terms stated within.
It’s the purchaser’s responsibility to follow all installation instruction guidelines and safety procedures supplied
with the product as it’s received by the purchaser to determine the compatibility of the product with the vehicle
or the device the purchaser intends to install the product on.
Whipple Superchargers assumes no responsibility for damages occurring from accident, misuse, abuse, improper
installation, improper operation, lack of reasonable care or all previously stated reasons resulting from
incompatibility with other manufacturer’s products.
There are no warranties expressed or implied for engine failure or damage to the vehicle in any way, loss of use
or inconvenience or labor reimbursement. This includes merchantability and fitness.
NEVER SMOKE DURING THE INSTALLATION OF THE SC, THERE WILL BE
FLAMMABLE FUMES AND LIQUID AROUND THE VEHICLE

Installation Manual: GM LT1_A1R13E
Last Updated: February 12th, 2019
Page 6 of 36
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ILLUSTRATED INSTALLATION GUIDE
It is strongly recommended that you read through this guide before you begin installing the Whipple Supercharger.
WARNING!! Batteries normally produce explosive gases. Therefore, do not allow flames, sparks or
lighted substances to come near the battery. When charging or working near a battery, always shield your
face and protect your eyes. Always provide ventilation. Failure to follow these instructions may result in
personal injury.
WARNING!! Keep out of the reach of children. Batteries contain sulfuric acid. Avoid contact with skin,
eyes or clothing. Also, shield your eyes when working near the battery to protect against possible
splashing of the acid solution. In case of acid contact with the skin or eyes, flush immediately with water
for a minimum of 15 minutes and get prompt medical attention. If acid is swallowed, call a physician
immediately. Failure to follow these instructions may result in personal injury.
1. Using an air hose, blow off any loose dirt or debris from engine compartment. If really dirty, then steam clean the
engine compartment before proceeding to the next step.
2. Follow the step by step calibration process instruction sheet. Note: Cals can take up to 48 hours after request, this
should always be done before installing the supercharger. Issues with HP Tuners software should be handled by
the MFG of the flash tool company.
Your computer must have a stock unaltered file or programmer will not load. If you have a modified PCM, return it
back to stock to avoid any corruption issues. If you do not have the stock file, you must take it to the dealership and have
the PCM/TCM updated. Failure to do so may cause complications in the file build for your vehicle and cause running
issues.
3. Slowly remove the factory gas cap to relieve any excess pressure.
4. Disconnect the negative (-) battery connector with a 10mm wrench. The battery cable must remain off for the
remainder of the install.
5. Disconnect the quick connect fittings located on both sides of the stock air induction tube. Disconnect by squeezing
the clips and pulling away from ducting.

Installation Manual: GM LT1_A1R13E
Last Updated: February 12th, 2019
Page 7 of 36
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6. Disconnect the MAF sensor connector by pulling up on the red safety clip, and then squeezing the connector while
pulling up.
7. Loosen the hose clamp using an 8mm nut driver that secures the MAF housing to the stock air induction tube and
the hose clamp holding the air induction tube to the throttle body. Lift the factory air ducting away from engine.
8. Remove the factory airbox lid by removing the (4) mounting bolts using an 8mm socket. Remove the stock air filter
element, this will not be reused.
9. Disconnect the electronic throttle connector by pulling up on the red safety clip, and then squeezing the connector
while pulling up.

Installation Manual: GM LT1_A1R13E
Last Updated: February 12th, 2019
Page 8 of 36
www.whipplesuperchargers.com
10. Disconnect the factory MAP sensor electrical connector by squeezing the connector and pulling away. Using a
10mm socket, remove the MAP sensor from the intake manifold by removing the mounting bolt.
11. Disconnect the factory EVAP solenoid quick connection from solenoid by squeezing the connector and pulling away.
12. Remove the EVAP solenoid from the intake manifold using a 10mm socket and hang to the driver side of engine for
later installation. Keep the factory fastener for later use.
13. Remove the stock throttle body from the engine by removing the (4) fasteners using a 10mm socket.

Installation Manual: GM LT1_A1R13E
Last Updated: February 12th, 2019
Page 9 of 36
www.whipplesuperchargers.com
14. Remove the (2) air duct support stands from the intake manifold using a 10mm wrench or deep-well socket.
Remove the (2) fasteners located in the back securing the intake manifold cover to the intake manifold using a
10mm socket.
15. Remove the valve cover to air duct plastic vent tubes from valve covers by squeezing the connector and pulling up.
16. Remove the vent line from the valley tray to the manifold quick connect fitting by squeezing the connector and
pulling away from intake manifold. Remove end from valley tray (this is in the way for manifold removal).
17. Remove the (8) cable ties securing the wire harness to the intake manifold cover (these will not be reused).

Installation Manual: GM LT1_A1R13E
Last Updated: February 12th, 2019
Page 10 of 36
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18. The plastic cover cannot be removed due to firewall clearance, therefore you must loosen all the factory intake
manifold bolts (10) using a 10mm socket. Remove the intake manifold by lifting and sliding forward. Once the
intake manifold is out of the way, remove the plastic cover by removing the (4) plastic cable ties holding the wire
harness to the back of the cover.
19. Clean the intake manifold surface using carb cleaner or other like chemicals. Cover intake ports with masking tape
or duct tape.
20. Using a ½” breaker bar or long ½” socket, remove the stock belt by releasing the tension of the factory spring
loaded tensioner. Rotate in a counter-clockwise motion to release tension.
21. The SC assembly is shipped pre-assembled. For proper assembly, this must be disassembled.
22. Disassemble the SC assembly from the intake manifold by removing the (16) 6mm SHCS using a 5mm allen socket
(6 are upside down). [(10) 6mm x 22mm, (2) 6mm x 25mm, (2) 6mm x 55mm]. Lift the SC assembly up from
intake manifold, carefully letting the bypass valve actuator arm rotate out of the bracket.
23. Install the stock MAP sensor into the back of the new intake manifold. Remove the red plastic cover from the
intake manifold, remove the pre-installed 10/32” SHCS and AN washer. Apply generous amount of grease to oring
on MAP sensor, carefully press into passage. Secure sensor with the 10/32” SHCS you previously removed. Apply
light amount of Loctite™ (#648 green) threads to threads and torque to 32 in/lbs using a 5/32” allen socket.