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 MANUALSCHEVROLET2009SILVERADO 2500 2WD V8-6.6L DSL TURBOREPAIR AND DIAGNOSISTESTING AND INSPECTIONPROGRAMMING AND RELEARNINGTRANSMISSION CONTROL MODULE PROGRAMMING AND SETUP (ALLISON)
2009 Chevrolet Silverado 2500 2WD V8-6.6L DSL Turbo
Transmission Control Module Programming and Setup (Allison)
2009 Chevrolet Silverado 2500 2WD V8-6.6L DSL TurboSECTION Transmission Control Module Programming and Setup (Allison)
Transmission Control Module Programming and Setup (Allison)
The following service procedures require a programming and a setup event be performed for a complete repair.
Transmission Control Module (TCM) Replacement
If the TCM is replaced, TCM Reprogramming must be performed. Refer to Service Programming System (SPS) (Programming and Relearning) .
TCM Reprogramming
If programming is required, perform the following procedure. Refer to Service Programming System (SPS) (Programming and Relearning) .
Ensure the following conditions exist in order to prepare for TCM programming or reprogramming:
* The battery is fully charged.
* The ignition switch is in the RUN position.
* Ensure that the TCM has the latest software version.
* The Techline equipment cable connection at the data link connector (DLC) is secure.
* Inspect the Techline equipment for the latest software version.
Program the TCM using the latest software matching the vehicle. Refer to up-to-date Techline equipment user instructions.
If the TCM fails to program, proceed as follows:
* Ensure the TCM connection is good.
* Inspect the Techline equipment for the latest software version.
* Attempt to program the TCM. If the TCM still cannot be programmed properly, replace the TCM.
TCM Setup
Refer to FastLearn Procedure (Programming and Relearning) to complete repair.
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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.