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.
2002 Chevrolet Impala LSFACTORY OEM SERVICE PROCEDURE
Diagnostic Trouble Code Definitions
DIAGNOSTIC TROUBLE CODE DEFINITIONS
| DTC (1) | Description | Perform Test | ||||
|---|---|---|---|---|---|---|
| B1003 | Programming Mode Active Message Not Received | B1003 | ||||
| B3102 | Remote Keyless Entry Data Link Circuit Low Voltage | B3102 | ||||
| B3103 | Remote Keyless Entry Data Link Circuit High Voltage | B3103 | ||||
| B3106 | Remote Keyless Entry Data Link Parity Error | B3106 | ||||
| PXXXX | Powertrain Control Module Fault | (2) | ||||
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Factory Service Tools
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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.
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