GM Service Manual Online
For 1990-2009 cars only

DTC

Diagnostic Procedure

Modules

U1000 and U1255

DTC U1000 and U1255

DDM, DIM, Digital Radio Receiver, EBCM, HUD, HVAC Control Module, IPC, IPM, MSM, PCM, Radio, RCDLR, Remote Playback Device - CD Changer, RIM, SDM, Theft Deterrent Control Module, VCIM

U1016

DTC U1001-U1254

DIM, EBCM, HUD, IPC, IPM, MSM, SDM, Theft Deterrent Control Module, RCDLR, VCIM

U1040

DTC U1001-U1254

IPC, PCM, SDM

U1064

DTC U1001-U1254

DDM, Digital Radio Receiver, EBCM, HUD, HVAC Control Module, IPC, IPM, MSM, Radio, Remote Playback Device - CD Changer, RIM, SDM, Theft Deterrent Control Module, VCIM

U1065

DTC U1001-U1254

DDM, DIM, IPC, Radio, RIM

U1066

DTC U1001-U1254

DDM, HVAC Control Module, IPC, IPM

U1088

DTC U1001-U1254

HUD, IPC, VCIM

U1096

DTC U1001-U1254

HUD, SDM

U1128

DTC U1001-U1254

Remote Playback Device - CD Changer, VCIM

U1130

DTC U1001-U1254

Radio

U1151

DTC U1001-U1254

Radio

U1160

DTC U1001-U1254

DIM, Digital Radio Receiver, IPC, MSM, Radio, RIM

U1192

DTC U1001-U1254

IPC

U1300, U1301, or U1305

DTC U1300, U1301, or U1305

DDM, DIM, Digital Radio Receiver, EBCM, HUD, HVAC Control Module, IPC, IPM, MSM, PCM, Radio, RCDLR, Remote Playback Device - CD Changer, RIM, SDM, Theft Deterrent Control Module, VCIM