Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Powertrain Control Module (Pcm): Installation
On 4.3L, 5.0L, 5.7L and 7.4L, install knock sensor module in NEW PCM. Install access cover. On all models, install PCM into vehicle. Connect harness connectors to PCM. Reconnect negative battery cable. If NEW PCM has been installed, PCM MUST BE programmed. See 2000 COMPUTER RELEARN PROCEDURES article in GENERAL INFORMATION.
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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.