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Home >> Chevrolet >> 2000 >> Corvette V8-5.7L VIN G >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Relays and Modules - Computers and Control Systems >> Engine Control Module >> Service and Repair >> Powertrain Control Module (PCM) Replacement

Powertrain Control Module (PCM) Replacement

IMPORTANT:
^ Do not substitute a PCM from another vehicle for diagnosis. The PCM will not recognize the Vehicle Theft Deterrent password from the BCM. The PCM disables the fuel, and the PCM stores DTC P1631 into history.
^ The following must be performed anytime the PCM is replaced:
- Program the PCM
- The PCM Password Learn procedure
- The Idle Learn Procedure
- The Oil Life reset procedure
- The Functional Check
^ The following must be performed anytime the PCM is disconnected, loses power or is reprogrammed:
- The Idle Learn Procedure
- The Functional Check

REMOVAL PROCEDURE

IMPORTANT: Remove any debris from the PCM connector surfaces before servicing the PCM. Inspect the PCM module connector gaskets when diagnosing/replacing the PCM. Ensure that the gaskets are installed correctly. The gaskets prevent contaminate intrusion into the PCM.

NOTE: Do not touch the connector pins or soldered components on the circuit board in order to prevent possible Electrostatic Discharge (ESD) damage to the PCM.

IMPORTANT: The ignition should always be OFF when installing or removing the PCM connectors.




1. Remove the wheelhouse filler panel.
2. Remove the TAC module.
3. Disconnect the PCM electrical harness connectors.




4. Loosen but do not remove the PCM rear retaining fastener. Use the rear retaining fastener as an anchor for the outer bracket.
5. Remove the front retaining fastener from the PCM.
6. Reposition the PCM outer bracket.
7. Remove the PCM from the bracket and the vehicle.

INSTALLATION PROCEDURE




1. Install the PCM to the PCM rear bracket.
2. Position the PCM front bracket.

NOTE: Refer to Fastener Notice in Service Precautions.

3. Install the PCM front retaining fasteners.

Tighten
Tighten the PCM retaining fasteners to 2.2 N.m (17 lb in).




4. Connect the electrical connectors to the PCM.

Tighten
Tighten the PCM electrical connectors to 8 N.m (70 lb in).

5. Install the TAC module.
6. Install the wheelhouse filler panel.
7. Program the PCM if a new PCM is being installed. Programming and Relearning
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