2002 Pontiac Aztek FWDFACTORY OEM SERVICE PROCEDURE

Installation Procedure

WARNING: This page is about a different car, the 2004 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: PCM & Mounting Bracket
    GM519845Courtesy of GENERAL MOTORS CORP.
  1. Install the PCM to the PCM rear bracket.
  2. Position the PCM front bracket.
  3. NOTE: Refer to Fastener Notice in Cautions and Notices.
  4. Install the PCM front retaining fasteners.

    Tighten:Β  Tighten the PCM retaining fasteners to 2.0 N.m (17 lb in).

  5. Fig 2: PCM Electrical Harness Connectors
    GM519848Courtesy of GENERAL MOTORS CORP.
  6. Connect the electrical connectors to the PCM.

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

  7. Install the TAC module. Refer to Throttle Actuator Control (TAC) Module ReplacementΒ .
  8. Install the wheelhouse filler panel. Refer to Wheelhouse Filler Replacement in Body Front End.
  9. If a new PCM is being installed, program the PCM. Refer to Service Programming System (SPS) in Programming.
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.

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