GM Service Manual Online
For 1990-2009 cars only

DTC

Diagnostic Procedure

Module

U1000

Refer to DTC U1000 and U1255

EBCM, ESC, RCDLR, SDM

U1016

Refer to DTC U1001-U1254

BCM, EBCM, IPC, DDM, PDM, Radio, RCDLR, SCM

U1040

Refer to DTC U1001-U1254

IPC, SDM

U1056

Refer to DTC U1001-U1254

IPC

U1064

Refer to DTC U1001-U1254

DDM, HVAC, IPC, PDM, Radio, RCDLR, SCM, SDM

U1088

Refer to DTC U1001-U1254

IPC

U1096

Refer to DTC U1001-U1254

BCM, DDM, HVAC, PDM, Radio, RCDLR, SDM

U1128

Refer to DTC U1001-U1254

IPC

U1153

Refer to DTC U1001-U1254

IPC

U1160

Refer to DTC U1001-U1254

HVAC, IPC, SCM

U1161

Refer to DTC U1001-U1254

HVAC, IPC, SCM

U1166

Refer to DTC U1001-U1254

IPC

U1176

Refer to DTC U1001-U1254

IPC

U1255

Refer to DTC U1000 and U1255

BCM, HVAC, IPC, DDM, PDM, Radio, RCDLR, SCM

U1300

Refer to DTC U1300, U1301, or U1305

BCM, EBCM, ESC, HVAC, IPC, DDM, PDM, Radio, RCDLR, SCM, SDM

U1301

Refer to DTC U1300, U1301, or U1305

BCM, EBCM, ESC, HVAC, IPC, DDM, PDM, Radio, RCDLR, SCM, SDM

U1305

Refer to DTC U1300, U1301, or U1305

BCM, EBCM, ESC, HVAC, IPC, DDM, PDM, Radio, RCDLR, SCM