Powertrain Control Module: Removal

2004 Oldsmobile Bravada AWDSECTION Removal
WARNING: This page is about a different car, the 2002 Oldsmobile Bravada, 2002 GMC Envoy XL, 2002 GMC Envoy, and 2002 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.

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.
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

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

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