LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Pontiac >> 2001 >> Aztek Base, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 941 (Engine Controls - 8.1L (Introduction)) >> Repair Instructions >> Powertrain Control Module (PCM) Replacement >> Installation Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Installation Procedure

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: View Of PCM
    GM814119Courtesy of GENERAL MOTORS CORP.
  1. Install the PCM.

    Ensure that the mounting tabs are engaged.

  2. Secure the spring latch to the PCM.
    3. Fig 2: View Of PCM Electrical Connectors
    GM814117Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to Fastener Notice in Cautions and Notices.
  3. Connect the PCM electrical connectors.
  4. Tighten the PCM electrical connector bolts (2).

    Tighten:  Tighten the bolts to 8 N.m (71 lb in).

    5. Fig 3: View Of PCM Cover & Mounting Bracket
    GM814118Courtesy of GENERAL MOTORS CORP.
  5. Install the PCM cover.
    6. Fig 4: Locating PCM Cover
    GM877692Courtesy of GENERAL MOTORS CORP.
  6. If equipped with the Allison transmission RPO M74, install the engine harness clip to the PCM cover.
  7. Connect the negative battery cable. Refer to Battery Negative Cable Disconnect/Connect Procedure (Single Battery) or Battery Negative Cable Disconnect/Connect Procedure (Auxiliary Battery) in Engine Electrical.
  8. If a NEW PCM was installed, program the PCM. Refer to Service Programming System (SPS) in Programming.
  9. Perform the crankshaft position (CKP) system variation learn procedure. Refer to CKP System Variation Learn Procedure .
scientia non olet · About LEMON Manuals