LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> GMC >> 1999 >> Forward Control 4.3 W, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 170 (Body Control Modules) >> Removal & Installation >> Powertrain Control Module (Pcm) >> Removal & Installation (3.5L)
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Removal & Installation (3.5L)

WARNING: This page is about a different car, the 2002 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.
  1. Turn ignition switch to OFF position. Remove rear seat cushion to access battery. Disconnect negative battery cable. PCM is located in air cleaner box, on left side of engine compartment. See Figure. Remove driver side strut brace. Disconnect air duct from throttle body.
  2. Disconnect intake air temperature sensor and mass airflow sensor connectors. Loosen air cleaner cover retaining screw. Remove air cleaner cover. Lift PCM from air cleaner housing. Disconnect PCM harness connectors. Remove PCM from engine compartment.
  3. To install, reverse removal procedure. Tighten PCM connector screws to 71 INCH Lbs. (8 N.m). Replacement PCM must be programmed and Crankshaft Position (CKP) system variation learn procedure must be performed. See POWERTRAIN CONTROL MODULE  under PROGRAMMING.
scientia non olet · About LEMON Manuals