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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1843 (Engine Controls And Fuel - 3.5L (L66) - Introduction (2 Of 2)) >> Repair Instructions >> Powertrain Control Module Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2007 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
  1. Using a scan tool, retrieve the percentage of remaining engine oil. Record the remaining engine oil life.
    2. Fig 1: View Of Powertrain Control Module (PCM)
    GM1226486Courtesy of GENERAL MOTORS CORP.
  2. Disconnect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection (2.2L (L61) and 3.5L (L66))
  3. Disconnect the wiring harness.
  4. Depress the retaining tab and remove the powertrain control module (PCM).
  5. Remove the PCM from the housing.
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