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Home >> GMC >> 2002 >> C3500 HD 8.1 G, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 69 (Automatic Transmission Diagnosis - 4L80-E (Gasoline)) >> Removal & Installation >> Powertrain Control Module >> Removal

Powertrain Control Module: Removal

WARNING: This page is about a different car, the 2002 GMC Cab & Chassis Sierra and 2002 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Disconnect the PCM harness connectors (4) from the PCM (1) by loosening the PCM harness connector bolts (3).
  2. Release the PCM retaining clip (2) from the PCM (1).
  3. Slide the PCM (1) out of the PCM mounting bracket (3).
  4. Remove the PCM (1) from the engine compartment.