GM Service Manual Online
For 1990-2009 cars only

DTC

Diagnostic Procedure

Module

U1000 and U1255

DTC U1000 and U1255

DIC, SDM

U1016

DTC U1001-U1254

BCM, IPC, Rear Wheel Steering Control Module, SDM, TCM

U1024

DTC U1001-U1254

BCM, IPC, PCM

U1026

DTC U1001-U1254

PCM

U1041

DTC U1001-U1254

IPC, PCM, Rear Wheel Steering Control Module, SDM, TCM

U1048

DTC U1001-U1254

IPC

U1056

DTC U1001-U1254

EBCM, IPC

U1064

DTC U1001-U1254

IPC, MSM, PCM, Rear Wheel Steering Control Module, SDM, TCM

U1088

DTC U1001-U1254

BCM, PCM, VIU

U1096

DTC U1001-U1254

BCM, SDM, TCM

U1097

DTC U1001-U1254

IPC

U1151

DTC U1001-U1254

BCM, Radio, SDM

U1152

DTC U1001-U1254

BCM, DIC, IPC

U1169

DTC U1001-U1254

MSM

U1300, U1301, and U1305

DTC U1300, U1301, or U1305

BCM, DIC, EBCM, HVAC Control module, IPC, MSM, PCM, SDM, TCM, Transfer Case Shift Control Module, VIU