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Home >> Isuzu >> 2007 >> Ascender 4WD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System & Fuel System - 4.2L - Introduction (2 Of 2) >> Repair Instructions >> Powertrain Control Module Replacement >> Removal Procedure
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Removal Procedure

  1. Using a scan tool, retrieve the percentage of remaining engine oil. Record the remaining engine oil life.
    2. Fig 1: View Of PCM Assembly
    GM1284769Courtesy of GENERAL MOTORS CORP.
  2. Loosen the PCM harness connector bolts (4) from the center of the PCM harness connectors.
    3. NOTE: In order to prevent internal damage to the PCM, the ignition must be OFF when disconnecting or reconnecting the PCM connector.
  3. Remove the PCM harness connectors (2) from the PCM (1).
  4. Remove the PCM retaining bolts (3) and nuts (6).
    5. NOTE: Refer to POWERTRAIN CONTROL MODULE AND ELECTROSTATIC DISCHARGE NOTICE .
  5. Slide the PCM (1) away from the intake manifold past the mounting studs (5) and remove PCM from the vehicle.
  6. Remove the PCM mounting studs (5) from the intake manifold only if replacing the studs.
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