NHTSA ID Number: 10070187
Manufacturer Communication Number: PI1176A
Summary
AWD OFF message is displayed in the driver information center (DIC). Word CODE is illuminated in the DIC and followed by the number 73 or 173. May be caused by a software in the Rear Differential Control Module (RDCM). Update Rear Differential Control Module software.
Condition/Concern
Some Buick
Encore customers may comment that the AWD OFF message is displayed in the driver information center (DIC).
Some Chevrolet Trax customers may comment that the word CODE is illuminated in the DIC and followed by the number 73 or 173.
This may be caused by a software anomaly in the Rear Differential Control Module (RDCM).
Recommendation/Instructions
Updated Rear Differential Control Module software has been released to address this Condition/Concern. When reprogramming the Rear Differential Control Module (RDCM) use the latest Version 10.3 to perform the update.
1. Turn ON the ignition.
2. Perform the Diagnostic System Check – Vehicle.
⇒ If any DTCs are set, Go to Diagnostic Trouble Code (DTC) List – Vehicle.
⇒ If no DTCs are set, on the Buick Encore, Go to Step 3.
⇒ If no DTCs are set, on the Chevrolet Trax, Go to Step 4.
3. For the Buick Encore, observe the DIC for an AWD OFF message being displayed.
⇒ If an AWD OFF message is displayed in the DIC, Go to Step 5.
Notice: The word CODE (1) on the DIC will illuminate and then be followed by the number 73 or 173.
4. For the Chevrolet Trax, observe the DIC for CODE 73 or CODE 173 being displayed.
⇒ If CODE 73 or CODE 173 is displayed in the DIC, Go to Step 5.
5. Reprogram the Rear Differential Control Module using the latest available software. Refer to Rear Differential Control Module Programming and Setup in SI.
4 Affected Products
Vehicles
1 Associated Document
Service Bulletin Document
Bulletin No.: PI1176A
Date: May, 2014
SB-10070187-9133.pdf 453.583KB
Reprogramming
GM Diagnostic/Programming (TIS2Web)
Approved J2534 Device with TIS2WEB can reprogram 1996 and later All GM Modules.
To obtain the latest electronic controller calibration information for your vehicle, go to https://tis2web.service.gm.com/tis2web and enter the vehicle's 17 character Vehicle Identification Number (VIN) and select 'Get CAL ID’.
You can then compare the latest part number with the actual number installed on the vehicle to determine if a reprogram is needed.
The Service Programming System (SPS) application is part of the TIS2Web system. To program an ECU, the SPS application must communicate with the vehicle control modules using the proper J2534 programming interface tool.
The Tech 2 supports model years 1996 and beyond. With the addition of the CAN Diagnostic Interface (CANdi) module, Tech 2 is fully backward compatible with current Tech 2 functionality and operates transparently when diagnosing non-CAN-equipped vehicles.
Servicing the next generation Global A vehicles will require the diagnostic software, GDS2, Global Diagnostic System 2 running on a local PC device while the MDI is connected to the vehicle. The GM MDI is the Global Diagnostic tool for future vehicles starting with Global A vehicles.
The GM MDI was introduced in the fall of 2007 for Pass-Thru programming and offers faster programming speed. It can be used to perform Pass-Thru programming on all vehicles built since 1996 and into the future. Click here to view a list of GDS supported vehicles.
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SEOCONTENT-START
Service Bulletin
File in Section: – Bulletin No.: PI1176A
Date: May, 2014
PRELIMINARY INFORMATION
Subject: AWD OFF Message Displayed in DIC or CODE 73 or CODE 173 Illuminated in DIC Models: 2013-2014 Buick Encore
2013-2014 Chevrolet Trax (Canada) Equipped with All Wheel Drive (AWD) This PI has been revised to inform the Service Technician that when reprogramming the Rear Differential Control Module (RDCM) use the latest Version 10.3 to address this Condition/ Concern. Please discard PI1176. Condition/Concern Some Buick Encore customers may comment that the AWD OFF message is displayed in the driver information center (DIC).
Some Chevrolet Trax customers may comment that the word CODE is illuminated in the DIC and followed by the number 73 or 173.
This may be caused by a software anomaly in the Rear Differential Control Module (RDCM).
Recommendation/Instructions Updated Rear Differential Control Module software has been released to address this Condition/Concern.
When reprogramming the Rear Differential Control Module (RDCM) use the latest Version 10.3 to perform the update.
1. Turn ON the ignition.
2. Perform the Diagnostic System Check – Vehicle.
⇒ If any DTCs are set, Go to Diagnostic Trouble Code (DTC) List – Vehicle.
⇒ If no DTCs are set, on the Buick Encore, Go to Step 3.
⇒ If no DTCs are set, on the Chevrolet Trax, Go to Step 4.
3. For the Buick Encore, observe the DIC for an AWD OFF message being displayed.
⇒ 3716858
Notice: The word CODE (1) on the DIC will illuminate and then be followed by the number 73 or 173.
4. For the Chevrolet Trax, observe the DIC for CODE 73 or CODE 173 being displayed.
⇒ If CODE 73 or CODE 173 is displayed in the DIC, Go to Step 5. 5. Reprogram the Rear Differential Control Module using the latest available software. Refer to Rear Differential Control Module Programming and Setup in SI.
Warranty Information For vehicles repaired under warranty, use:
Labor Operation 2810695
Description Rear Differential Clutch Control Module Reprogramming
with SPS
Labor Time
Use Published Labor
O on
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