GM Service Manual Online
For 1990-2009 cars only

DTC

Diagnostic Procedure

Module

U1000

DTC U1000 and U1255

BCM, EBCM, IPC, PCM, SDM, VCIM

U1016

DTC U1001-U1254

BCM, EBCM, HVAC Control Module, IPC, SDM, VCIM

U1040

DTC U1001-U1254

BCM, IPC, PCM, SDM

U1064

DTC U1001-U1254

EBCM, IPC, PCM, SDM, VCIM

U1088

DTC U1001-U1254

IPC, VCIM

U1096

DTC U1001-U1254

BCM, HVAC Control Module, SDM

U1153

DTC U1001-U1254

BCM, PCM

U1255

DTC U1000 and U1255

HVAC Control Module, PCM

U1300

DTC U1300, U1301, or U1305

BCM, EBCM, IPC, SDM, VCIM

U1301

DTC U1300, U1301, or U1305

BCM, EBCM, IPC, SDM, VCIM