GM Service Manual Online
For 1990-2009 cars only

DTC

Diagnostic Procedure

Module that sets DTC

U1000 and U1255

DTC U1000 and U1255

BCM, EBCM, DIC, HVAC Control Module, IPC, Memory Seat Module-Driver, Radio, Transfer Case Shift Control Module, PCM, SDM

U1016

DTC U1001-U1254

BCM, IPC, SDM

U1026

DTC U1001-U1254

PCM

U1041

DTC U1001-U1254

IPC, PCM, SDM

U1064

DTC U1001-U1254

PCM, IPC, Memory Seat Module-Driver, SDM

U1088

DTC U1001-U1254

BCM, PCM

U1096

DTC U1001-U1254

BCM, PCM, SDM

U1097

DTC U1001-U1254

BCM, IPC, PCM

U1128

DTC U1001-U1254

BCM, DIC, IPC

U1153

DTC U1001-U1254

BCM, IPC, PCM

U1166

DTC U1001-U1254

BCM

U1300, U1301, and U1305

DTC U1300, U1301, or U1305

BCM, EBCM, DIC, HVAC Control Module, IPC, Memory Seat Module-Driver, Radio, Transfer Case Shift Control Module, PCM, SDM