Powertrain Control Module: Installation

2004 Oldsmobile Bravada RWDSECTION Installation
WARNING: This page is about a different car, the 2003 GMC Safari and 2003 Chevrolet Astro. However, it is still accessible from the selected car via links, so may be relevant.

Install PCM into mounting tray. Engage the spring latch onto the PCM. Connect harness connectors to PCM. Tighten PCM harness connector fasteners to specification. See TORQUE SPECIFICATIONS  . Reconnect negative battery cable. If new PCM has been installed, PCM must be programmed. See PROGRAMMING  .

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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.