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 MANUALSCHEVROLET2002AVALANCHE 2500, RWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 231 (BODY CONTROL MODULES)REMOVAL & INSTALLATIONPOWERTRAIN CONTROL MODULE (PCM)INSTALLATION
2002 Chevrolet Avalanche 2500, RWD
Powertrain Control Module (Pcm): Installation
2002 Chevrolet Avalanche 2500, RWDSECTION Installation
WARNING: This page is about a different car, the 2002 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Before installing PCM, ensure there is no debris in air filter/PCM housing assembly or in MAF/IAT sensor inlet screen, which may distort air flow. Ensure there are no signs of damage to air filter/PCM housing assembly, or to intake air duct. If a problem is found, replace component as necessary.
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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.