GM Service Manual Online
For 1990-2009 cars only

DTC

Diagnostic Procedure

Module(s)

U0001

DTC U0001

ECU

U0101

DTC U0100-U0299

ECU

U1000

DTC U1000 and U1255

BCM, EBCM, IPC, HUD, HVAC, MSM, PCM, Radio, RSE, SDM, Theft Deterrent Control Module, VCIM

U1016

DTC U1001-U1254

BCM, EBCM, IPC, Radio, SDM

U1017

DTC U1001-U1254

BCM, EBCM, IPC, Radio, SDM, TCM

U1024

DTC U1001-U1254

BCM, EBCM, ECM, IPC, Radio, SDM

U1040

DTC U1001-U1254

BCM, ECM, IPC, SDM

U1064

DTC U1001-U1254

ECM, IPC, MSM, Radio, SDM

U1088

DTC U1001-U1254

IPC

U1096

DTC U1001-U1254

HUD, SDM

U1153

DTC U1001-U1254

ECM, BCM

U1128

DTC U1001-U1254

BCM, RSE, VCIM

U1137

DTC U1001-U1254

BCM, Radio

U1192

DTC U1001-U1254

BCM, ECM

U1255

DTC U1000 and U1255

BCM, EBCM, IPC, HUD, HVAC, MSM, PCM, Radio, SDM, Theft Deterrent Control Module, VCIM

U1300

DTC U1300, U1301, or U1305

BCM, EBCM, ECM, IPC, HUD, HVAC, MSM, PCM, Radio, RSE, SDM, TCM, Theft Deterrent Control Module, VCIM

U1301

DTC U1300, U1301, or U1305

BCM, EBCM, ECM, IPC, HUD, HVAC, MSM, PCM, Radio, RSE, SDM, TCM, Theft Deterrent Control Module, VCIM

U1305

DTC U1300, U1301, or U1305

BCM, EBCM, ECM, IPC, HUD, HVAC, MSM, PCM, Radio, RSE, SDM, TCM, Theft Deterrent Control Module, VCIM

U2105

DTC U2105

TCM