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 671 (ENGINE CONTROL SYSTEM)PCM CONFIGURATION
2002 Chevrolet Avalanche 2500, RWD
Pcm Configuration
2002 Chevrolet Avalanche 2500, RWDSECTION Pcm Configuration
WARNING: This page is about a different car, the 2004 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.
- Connect the WDS or equivalent to the DLC-2.
- Set up the WDS or equivalent (including the vehicle recognition).
- Select "Module Programming".
- Select "Programmable Module Installation".
- Select "PCM" and perform procedures according to directions on the WDS or equivalent screen.NOTE:
- If the PCM is replaced with a new one, the PCM stores DTC P0602 and illuminates the MIL even though no malfunction is detected. This means the PCM has not been configured yet.
- Retrieve DTC's by the WDS or equivalent, then verify that there in no DTC present.
- If DTC is present, perform applicable DTC inspection. (See DTC TABLE .)
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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.