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BT DieselWorks AutoSync G2 User manual

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Page | 1
BT DieselWorks AutoSync G2 – Installation guide
THESE INSTRUCTIONS ARE ONLY FOR THE NEW AutoSync “G2”
Requires IO4/IO5/IO6 radios (check glovebox RPO sticker)
Does not work on IO3, IOB, IOR, IOT (or any of the T1xx new body style pickups)
2014-2018 Silverado/Sierra 1500 pickup
2015-2019 Silverado/Sierra 2500-3500 pickup
2015-2020 Tahoe/Yukon/Suburban/Escalade SUV
2015-2018 Colorado/Canyon pickup
And many other 2014ish-2019ish GM cars with IO4/IO5/IO6 radio
Thank you for purchasing the BT DieselWorks AutoSync. The AutoSync is a patent-pending revolutionary
new easy-to-install module that adds many enhanced functional and comfort features to many GM late
model vehicles. Please be sure to also follow the quick-start guide on the ‘AutoSync installation guides’
page on our website. It is VERY important to register your AutoSync and pair it to your WiFi as soon as
possible to validate warranty and receive the latest firmware updates and new feature additions.
I know these instructions are long/boring, but PLEASE try to at least glance over every page
first. 95% of tech support email/questions we get are simply due to misunderstanding/not
reading the instructions.

NOTE: 2017+ vehicles have several feature limitations and also require one additional minor wiring
change under the dash at the Serial Data Gateway module connector. Please see the additional 2017+
supplement document instructions on our website on how to perform this wiring change/pin swap.
NOTE: We now offer a plug-and-play SDGM bypass harness to make the installation extremely easy on
2017+ vehicles. This harness installs in less than 2 minutes and negates the need to do the old
wiring/pin swap. The wiring/pin swap can be tricky, and the pins are quite fragile…the SDGM harness
is less than $10 and will potentially save huge headaches:
https://www.btdieselworks.com/collections/autosync/products/2017-sdgm-bypass-harness
Page | 2
INDEX
Introduction…….Page 1
Installation/basic operation…….Page 3-4
ECM Tune switching (diesel), AFM disable setting (gas), Strobe Lights Mode…….Page 5
Work Lights Mode, Viewing live engine data, view backup camera…….Page 6-7
High Idle Mode, read/clear DTCs (trouble codes), view live Vehicle Dynamics data…….Page 8
Launch Control Mode (2014-2016 only)…….Page 9
0-60mph performance timer, Vehicle Setup submenu…….Page 10
Vehicle Setup submenu cont. (new keyfob learn, TPMS programming, TPMS disable, OnStar/DEF reset,
manual DPF regen, Fuel System Tests/balance rates, transmission learn functions)…….Page 11
AutoSync settings submenu (camera settings, TC lockup controller settings, SecurIdle)…….Page 12
AutoSync settings submenu cont. (DRL settings, Fog light w/high beam, strobe lights pattern, reverse
work lights)…….Page 13
AutoSync settings submenu cont. (Engine data read mode, Auto nighttime Work Lights), torque
converter lockup controller enable/disable, BCM tuning/other module programming…….Page 14
Other hidden AutoSync features (remote keyfob windows control, DVD/Video-In-Motion override,
HMI/radio VIN clear/reset…….Page 15
Other hidden AutoSync features cont. (HVAC forced recirculation mode), EFILive / EZ Lynk DSP/SOTF
tune switching installation guide…….Page 16
AutoSync automatic firmware update info, AutoSync [in-truck] WiFi setup instructions…….Page 17-18
AutoSync offboard update/WiFi setup instructions (if your truck is parked out of WiFi range) ….Page 19
Page | 3
On the AutoSync, there two momentary push-buttons on the side of the module marked “A” and “B”
(not normally used), and two status LEDs. The AutoSync must remain plugged in at all times for features
to work. You can use AutoSync with an OBD port splitter (to use simultaneously with another scan tool,
Edge Insight, EZ Lynk, etc), however compatibility is NOT guaranteed unless you use the BT
DieselWorks OBD splitter, available at our website. AutoSync will not drain your battery when left
plugged in with the vehicle off, and it will not cause any harm if you unplug/plug-in AutoSync while the
vehicle is running.
Installing the AutoSync is as simple as plugging it into your truck’s OBD port, located under the dash. Be
sure the ignition is OFF when first installing the AutoSync. The AutoSync will NOT void any powertrain or
bumper-to-bumper warranties, and is completely undetectable by the dealer. As soon as the AutoSync is
unplugged, all traces/footprints are removed. The LED shows AutoSync system status at a glance: BLUE-
AutoSync is powered up, and vehicle CAN bus activity is being detected. GREEN- AutoSync is powered
up, CAN bus is active, and engine is running. The green LED can also mean the AutoSync is in WiFi search
mode, but has not yet connected to a valid WiFi network. If the LED does not turn on when plugged in,
that means there is no power at the OBD port…check the “DLC/DSM” fuse. If the OBD port confirmed
has power, try plugging the AutoSync into USB power (phone charger works fine). If the LED still does
not light up when plugged into USB power, the AutoSync is damaged/defective.
NOTE: AutoSync data display is default set to US/SAE units, if you wish to see data in metric units,
simply use the factory Driver Info Center (DIC) controls to set the vehicles units to “metric”. The
AutoSync will detect this change directly from the vehicles Body Control Module and automatically
reconfigure itself to metric units.
Page | 4
To activate/display the AutoSync main menu with the key on, engine NOT
running, press the cruise control “CANCEL” button on the steering wheel.
To activate/display the AutoSync main menu with the engine running, press the
rear defrost button 4 times in a row (4 times within ~4 seconds).
To step “back” a menu page at any time, press the “< BACK” button on the radio controls, OR press the
“

” icon at the top left of the screen. To exit the AutoSync menu at any time, press the “home” button
on the radio controls, OR press the “Exit” icon at the top right of the screen.
The AutoSync main menu will appear, as shown below, with the back/exit/home buttons circled:
Page | 5
Diesel vehicles: This ECM tune switching menu is found on AutoSync main menu, page 1. This menu
allows you to control EFILive DSP or EZ Lynk SOTF tune level. Simply tap whichever tune you want to
switch to, and the DSP/SOTF mode will immediately be changed. The currently selected tune will be
highlighted with a “( )” around the number, as shown in the picture below.
NOTE: requires additional AutoSync DSP/SOTF tune control wiring kit, sold separately. See page 17 of
this instruction manual for the AutoSync DSP/SOTF wire kit installation guide.
Gas vehicles: The icon that shows “ECM Tune Switching” in the picture below only shows on diesel
vehicles. When AutoSync is plugged into a gas vehicle, this icon will be replaced with “AFM:
Enabled/Disabled”. To disable the Active Fuel Management mode on your gas vehicle, set this to
“DISABLED”. This setting will be remembered permanently, you do NOT have to set AFM to disable
every time you drive the vehicle.
Strobe Lights – Found on page 1 of the AutoSync main menu. This activates exterior strobe light mode.
This will rapidly flash all exterior lighting (headlights, front turn signals, rear turn signals, CHMSL, reverse
lights, fog lights) in an alternating pattern. CHECK LOCAL LAWS regarding use of this feature! In most
areas, using vehicle lighting in this manner on public roadways is considered ‘impersonating a police
officer’. 2017+ vehicles, this feature usually only works with key on, engine off. If the engine is running
and you try to turn the strobe lights on, the button will say “Strobe Lights: Not Avail.”
We have recently developed a custom unlock method to allow strobes (and
work lights) with engine running on 2017+ vehicles! Currently, it is required to
have purchased our BCM tuning to gain access to this unlock method.
Page | 6
Work Lights – Found on page 1 of the AutoSync main menu. This activates exterior work light mode.
Work light mode manually turns on all cargo/bed lighting, as well as reverse lights. This feature is useful
for illuminating the rear of the vehicle at night, hooking up trailers at night, checking on cargo, etc.
2017+ vehicles have the same limitations as mentioned above for the strobe lights feature. The special
BCM unlock procedure mentioned above will allow work lights with engine running on 2017+.
Powertrain Data – Found on page 1 of the AutoSync main menu. The powertrain data page displays live
engine/transmission data, as shown below.
Diesel PIDs include boost, EGT, coolant temp (ECT), oil pressure, current gear, torque converter clutch
(TCC) locked/unlocked, DSP/SOTF tune, turbocharger vane position, actual fuel rail pressure (aFRP),
desired fuel rail pressure (dFRP), main injection fuel rate, main injection timing.
Gasoline PIDs include spark advance, knock retard, MAF, MAP, engine load, coolant temp (ECT), oil
pressure, current gear, torque converter clutch (TCC) locked/unlocked.
NOTE:the “EGT” reading is derived from the factory “EGT-1” sensor, located in the factory downpipe at
the outlet of the turbocharger (LML) or “EGR-1” in the manifold (L5P). If this sensor is unplugged or
removed due to an aftermarket downpipe, EGT will not display correctly and will default to “1832*F”.
If your truck is ‘deleted’, you can extend the factory sensor wiring and re-locate the factory EGT-1 sensor
to the exhaust manifold for a more accurate “pre-turbo” reading.
There are two additional icons/buttons on the bottom of the Powertrain Data screen.
The “RECORDS” icon will display a page that shows the peak recorded values for each PID. These PID
peak records are stored permanently even if the AutoSync is unplugged. To clear/reset the PID peak
records, press the “ERASE” icon on the bottom of the “engine data records” page.
Page | 7
The “Minimize” icon will shrink the live engine data display to a small bar along the bottom of the
screen. This is helpful for keeping essential data at a glance, while still being able to view the navigation
map, radio controls, etc.
Due to the smaller size of the “minimized” view, only two PIDs are able to be displayed at once in this
mode. To cycle through the pages of minimized data display, press the drivers door lock button. To
switch back to the engine data full page, press the “Show Maneuver” icon.
Another great feature of the “minimized” mode, is that this minimized data is also mirrored on the
Driver Info Center (DIC) display in the instrument cluster, for easy/quick viewing without having to look
over at the radio/navigation screen. To view the engine data in the DIC, use the steering wheel DIC
controls to switch to the “NAVIGATION” page in the DIC, as shown below (non-Denali shown, Denali
instrument cluster is similar/works the same way). NOTE: DIC data display is only available when the
“minimized” engine data view is active. To fully hide the minimized data view on the radio/nav screen,
while still keeping the DIC data display active, press the “Dismiss” icon on the radio/nav screen, shown
above. Press “Show Maneuver” to return to the full engine data page (this will simultaneously cancel
the DIC engine data display, as explained above).
If the minimized view on the radio/nav screen has been “dismissed” or accidentally cleared, simply
press the rear defrost button 4 times to re-enter the AutoSync main menu.
View Rear Camera – This is found on page 2 of the AutoSync main menu. Press this icon to momentarily
switch to the backup camera display. The backup camera will display for roughly 5 seconds, and then
automatically return back to the AutoSync menu. Requires camera wiring mod or harness purchase.
Video explaining tailgate wiring mod: https://youtu.be/nB-QMF7z_WY
Page | 8
https://harnessdr.com/product/2016-2019-silverado-sierra-reverse-camera-adapter-harness/
NOTE: If you have not done the wiring modification correctly, the radio screen will be blank and/or
say “service rear vision system” if you use the AutoSync to manually turn the backup camera on while
driving. CHECK THE HARNESS MODIFICATIONS BEFORE EMAILING ME SAYING “HEY, THE BACKUP
CAMERA OR TURN SIGNAL CAMERA FUNCTION DOESN’T WORK!”
High Idle – This is found on page 2 of the AutoSync main menu. When the vehicle is in park with foot off
brake pedal, press this button to turn on the manual high idle function. Once the high idle mode is on,
you can adjust the engine RPM up/down (roughly 1000-2000rpm) using the cruise control +/- buttons.
NOTE: There is also a high idle shortcut to activate the mode without having to go into the AutoSync
menu. When the engine is idling in park, foot off brake, press and hold the cruise SET button for a
second or so. You will hear a chime and high idle will engage. To cancel high idle, press the brake pedal.
NOTE: on 2011-2016 LML, the high idle might take up to 15 seconds to engage and reach full RPM.
Current DTCs – This is found on page 2 of the AutoSync main menu. This function will read/display the
current/history Diagnostic Trouble Codes. The AutoSync is unique in that it will read codes from EVERY
module in the vehicle! The only other tools on the market that will read all codes in every module cost
thousands of dollars...Edge, Ez Lynk, and other competitors only read basic engine/transmission DTCs!
The DTCs are displayed in a numbered list with module, DTC, and status (current/history). Current
means that the fault currently exists. History means that the fault is not currently present, but has
occurred momentarily at least once in the past 50 ignition cycles. If there are more than 6 current DTCs,
press the “Next Page” button to scroll. “Clear DTCs” will clear all current/history DTCs from all modules.
Vehicle Dynamics Data – This is found on page 2 of the AutoSync main menu. This displays live chassis-
dynamics data from the stability control and traction control systems. Vehicle dynamics PIDs include:
Longitudinal acceleration (forward/backward Y-axis G-force), Lateral acceleration (side-to-side X-axis G-
Page | 9
force). Oversteer/understeer (if the vehicle is steady on its driver-intended path, if there is adverse yaw
creating an oversteer-fishtailing event, or an understeer-‘plowing’ event). Yaw rate (yaw/Z-axis rotation
rate). TCS torque request (engine torque as requested by the traction control system, during wheel-slip,
you will see this PID showing that TCS is requesting torque reduction). Brake apply pressure (how much
brake fluid pressure is being applied to the brake calipers, whether it be by the driver pressing the brake
pedal, or the ABS module applying brake pressure during a TCS/ESC event).
In similar fashion to the engine data display page, the vehicle dynamics page also records peak records
that can be recalled by pressing the “RECORDS” icon, and cleared by pressing the “RESET” icon on the
vehicle dynamics records page
Launch Control – This is found on page 3 of the AutoSync main menu. This does not work on 2017+
vehicles, sorry. This exclusive feature uses the ABS module to act as a ‘smart’ line-lock/automatic launch
control feature. The vehicle should be in 4-wheel-drive, and have the brake pedal firmly applied before
activating. Follow the on-screen instructions, and when you are ready to activate it, press the cruise
control “SET” button.
You will hear the ABS motor run for ~2 seconds and feel some vibration in the brake pedal and you
may see an ABS warning light; this is normal.
When the ABS motor stops running, the launch control braking is fully charged. An on-screen
countdown (5, 4, 3, 2, 1) will display, and you can release the brake pedal and bring the engine RPM’s up
to ~2200rpm. When the countdown hits 0, the ABS module will immediately dump brake pressure and
launch the truck.
You can also manually release brake pressure and force-launch the truck at any time during
the countdown by pressing the cruise control “RESUME” button.
NOTE: It is strongly advisable to NOT use launch control repeatedly, and you should allow
several minutes’ cool-down time for the ABS pump motor and ABS solenoids between launch
Page | 10
control events. Repeatedly/continuously using launch control MAY cause premature wear on
the ABS pump motor and solenoid valves.
Performance Timer – This feature is found on AutoSync main menu, page 3. This function allows the
user to measure the vehicles 0-60mph time. Follow the on-screen instructions to use the feature. If the
vehicle is moving, the status will show “NOT READY”. When the vehicle is completely stopped and the
timer is ready to begin, the status will show “READY”. As soon as the vehicle starts moving, the timer
will begin counting and the status will show “RUNNING”. When the vehicle hits 60mph, the status will
show “COMPLETE”, and the 0-60mph time will be displayed on the screen. The AutoSync will
automatically store the fastest time, and this time will be saved even if the AutoSync is unplugged. If a
faster 0-60mph time is accomplished, the AutoSync will automatically update the saved “Best time”. To
clear the “best time” records and reset the value to the default max time (65.54 seconds, computer
nerds will get this, ha), press the “Clear Records” icon.
NOTE: This test will only be accurate if your tire size is set correctly! If you have larger-than-stock tires
and your ECM tune/speedometer has not been corrected for the larger size tires, this 0-60mph time
will be inaccurate. Using GPS, verify that your speedometer is correct to ensure accurate results.
Vehicle Setup – This is a sub-menu found on page 3 of the AutoSync main menu. This sub-menu
contains several vehicle-related setup and configuration options:
-Learn new keyfobs (only for vehicles with keyed ignition, does not work on push-button-start vehicles)