Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2009TRAVERSE AWD V6-3.6LREPAIR AND DIAGNOSISSTEERING AND SUSPENSIONTECHNICAL SERVICE BULLETINSALL TECHNICAL SERVICE BULLETINSWHEELS/TIRES - 20 INCH ACCESSORY WHEELS AVAILABLEENGINE/TRANSMISSION/BODY CONTROL MODULE REPROGRAMMING
2009 Chevrolet Traverse AWD V6-3.6L
Engine/Transmission/Body Control Module Reprogramming
2009 Chevrolet Traverse AWD V6-3.6LSECTION Engine/Transmission/Body Control Module Reprogramming
Engine Control Module (ECM) Reprogramming (2009-2011 Chevrolet Traverse Only)
Important
For proper vehicle operation and to insure coverage under the provisions of the new vehicle warranty, the vehicle must be programmed with the correct calibration as soon as the 20" wheels are installed.
When upsizing from 17" wheels only, the ECM must be reprogrammed for speedometer accuracy. Contact Techline to obtain a VCI number. Use the Service Programming System (SPS).
Transmission Control Module (TCM) Reprogramming (2009-2011 Chevrolet Traverse Only)
Important
For proper vehicle operation and to insure coverage under the provisions of the new vehicle warranty, the vehicle must be programmed with the correct calibration as soon as the 20" wheels are installed.
When upsizing from 17" wheels only, the TCM must be reprogrammed for speedometer accuracy. Contact Techline to obtain a VCI number. Use the Service Programming System (SPS).
Body Control Module (BCM) Reprogramming (Export Mexico Only)
Important
Module programming must be done using Pass-Thru method.
For vehicles produced for sale in Mexico, it is necessary to reprogram the BCM with a new speed calibration when installing 20" accessory wheels. These calibrations are not selectable on a Tech 2(R) and require a VCI number from Techline(R) Customer Support Center (TCSC). Contact TCSC. Record this number on the form. Use the Service Programming System (SPS).
Important
For proper vehicle operation and to insure coverage under the provisions of the new vehicle warranty, the vehicle must be programmed with the correct calibration as soon as the 20" wheels are installed.
When upsizing from 17" wheels only, the ECM must be reprogrammed for speedometer accuracy. Contact Techline to obtain a VCI number. Use the Service Programming System (SPS).
Transmission Control Module (TCM) Reprogramming (2009-2011 Chevrolet Traverse Only)
Important
For proper vehicle operation and to insure coverage under the provisions of the new vehicle warranty, the vehicle must be programmed with the correct calibration as soon as the 20" wheels are installed.
When upsizing from 17" wheels only, the TCM must be reprogrammed for speedometer accuracy. Contact Techline to obtain a VCI number. Use the Service Programming System (SPS).
Body Control Module (BCM) Reprogramming (Export Mexico Only)
Important
Module programming must be done using Pass-Thru method.
For vehicles produced for sale in Mexico, it is necessary to reprogram the BCM with a new speed calibration when installing 20" accessory wheels. These calibrations are not selectable on a Tech 2(R) and require a VCI number from Techline(R) Customer Support Center (TCSC). Contact TCSC. Record this number on the form. Use the Service Programming System (SPS).
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.