GM Service Manual Online
For 1990-2009 cars only

DTC

Diagnostic Procedure

Module(s)

CXXXX

Diagnostic Trouble Code (DTC) List in Antilock Brake System.

EBCM

P0502

DTC P0502 in Automatic Transaxle-4T65-E

PCM

P0503

DTC P0503 in Automatic Transaxle-4T65-E

PCM

P1554

DTC P1554

PCM

P1558

DTC P1585

PCM

PXXXX

Diagnostic Trouble Code (DTC) List in Engine Controls-3.8L.

PCM