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Powertrain Control Module: Removal

Ensure ignition is off. Disconnect negative battery cable. Locate PCM at left front of engine, on intake manifold plenum. See Fig 1. Loosen PCM harness connector bolts. Disconnect PCM harness connectors. Remove 4 PCM mounting bolts. Remove PCM from intake manifold plenum.

Fig 1: Locating PCM
G00156207Courtesy of GENERAL MOTORS CORP.