Corvette 1997-2005

Powertrain Control Module

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Operation




NOTE
The Corvette 5.7L V8 engine uses a PCM, while 6.0L V8 engine uses an ECM. For 6.0L V8 applications, see Engine Control Module (ECM).

Removal & Installation



5.7L Engines
  1. Using a scan tool, retrieve the percentage of remaining engine oil. Record the remaining engine oil life.
  2.  
  3. Remove the wheelhouse filler panel.
  4.  
  5. Remove the throttle actuator control (TAC) module. See Throttle Actuator Control (TAC) Module.
  6.  
  7. Disconnect the powertrain control module (PCM) electrical harness connectors.
  8.  
  9. Loosen but do not remove the PCM rear retaining fastener. Use the rear retaining fastener as an anchor for the outer bracket.
  10.  
  11. Remove the front retaining fastener from the PCM.
  12.  
  13. Reposition the PCM outer bracket.
  14.  
  15. Remove the PCM from the bracket and the vehicle.
  16.  

To install:

  1. Install the PCM to the PCM rear bracket.
  2.  
  3. Position the PCM front bracket.
  4.  
  5. Install the PCM front retaining fasteners. Tighten the PCM retaining fasteners to 2.0 Nm (17 inch lbs.).
  6.  
  7. Connect the electrical connectors to the PCM. Tighten the PCM electrical connectors to 8 Nm (70 inch lbs.).
  8.  
  9. Install the TAC module. See Throttle Actuator Control (TAC) Module.
  10.  
  11. Install the wheelhouse filler panel.
  12.  
  13. If a new PCM is being installed, program the PCM.
  14.  

 
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