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.
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HOMESERVICE MANUALSCHEVROLET2002SILVERADO 1500 HD, RWDREPAIR AND DIAGNOSISTRANSMISSIONAUTOMATIC TRANSAUTOMATIC TRANSMISSION DIAGNOSIS - 4L80-EREMOVAL & INSTALLATIONPOWERTRAIN CONTROL MODULEREMOVAL
2002 Chevrolet Silverado 1500 HD, RWD
Powertrain Control Module: Removal
2002 Chevrolet Silverado 1500 HD, RWDSECTION Removal
- Release the PCM cover mounting holes (1, 5) away from the mounting tabs on the PCM mounting bracket. See Figure.
- Release the PCM cover (8) from the mounting bracket.
- Remove the PCM cover.
- Disconnect the PCM harness connectors (6).
- Release the spring latch (2) from the PCM.
- Release the PCM mounting tabs (3) from the PCM.
- Remove the PCM (4) from the engine compartment.
CAUTION:
Do not touch the connector pins or soldered components on the circuit board to prevent possible electrostatic discharge damage to the PCM.
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.