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 MANUALSCHEVROLET2007SILVERADO CLASSIC 2500 4WD V8-6.0LREPAIR AND DIAGNOSISTRANSMISSION AND DRIVETRAINAUTOMATIC TRANSMISSION/TRANSAXLERELAYS AND MODULES - A/TCONTROL MODULESERVICE AND REPAIR
2007 Chevrolet Silverado Classic 2500 4WD V8-6.0L
Control Module: Service and Repair
2007 Chevrolet Silverado Classic 2500 4WD V8-6.0LSECTION Service and Repair
Transmission Control Module Replacement
Removal Procedure
Important:
^ Remove any debris from the transmission control module (TCM) connector surfaces before servicing the TCM. Inspect the TCM module connector gaskets when diagnosing or replacing the TCM. Ensure that the gaskets are installed correctly. The gaskets prevent contaminant intrusion into the TCM.
^ The ignition must be OFF when disconnecting or reconnecting power to the TCM.
1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection (Auxiliary Battery) Battery Negative Cable Disconnection and Connection (Single Battery).
2. Remove the TCM cover bolts (1) located on the left side of the radiator shroud.
3. Pull the cover and TCM up and away from the radiator shroud.
4. Push up on the retainers (1) in order to remove the TCM from the cover.
5. Disconnect the TCM electrical connectors (2) and remove the TCM from the vehicle.
Installation Procedure
1. Connect the TCM electrical connectors (2) to the TCM.
2. Install the TCM to the cover.
3. Using the alignment tabs (1), install the cover and module to the radiator shroud.
4. Notice:
Refer to Fastener Notice.
Install the TCM cover bolts (1) to the radiator shroud.
Tighten the bolts to 9 Nm (80 inch lbs.).
5. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection (Auxiliary Battery) Battery Negative Cable Disconnection and Connection (Single Battery).
6. Reprogram the TCM. Refer to Control Module References.
7. Important:
The FastLearn (adapt) procedure must be performed. This can be done in one step using a scan tool. If this procedure is not done, the TCM adaptive values will be at the settings that it learned for the old components. and will be in slow adaptive mode. Under these conditions, it would take an unacceptably long time for the adaptive values to converge to levels suitable for the new transmission.
Perform the FastLearn procedure. Refer to FastLearn Procedure.
RENDER: 1.0x
NO RELATED
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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.