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Home >> Chevrolet >> 2003 >> Chevy Express G2500, Van Passenger Extended >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 18 (Engine Controls Self-Diagnostics - 4.3L) >> Diagnostic Tests >> Notes
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Diagnostic Tests: Notes

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NOTE: Before clearing DTCs, perform powertrain diagnostic system check. See DIAGNOSTIC SYSTEM CHECK - ENGINE CONTROLS  under SELF-DIAGNOSTIC SYSTEM. Record FREEZE FRAME and FAILURE RECORDS for reference during testing. Data will be erased when DTCs are cleared. If PCM is replaced, NEW PCM must be programmed using special manufacturer's equipment. See POWERTRAIN CONTROL MODULE  under PROGRAMMING.