GM Service Manual Online
For 1990-2009 cars only

DTC

Diagnostic Procedure

Modules

U1000

DTC U1000

Audio Amplifier, BCM, DDM, DSM, EBCM, ESC, FPDM, HVAC, IPC, PCM, Radio, RSA, SDM, TCSCM, VCIM

U1016

DTC U1001-U1254

Audio Amplifier, BCM, DDM, DSM, EBCM, ESC, FPDM, HVAC, IPC, Radio, RSA, SDM, TCSCM, VCIM

U1026

DTC U1001-U1254

EBCM, IPC, PCM

U1040

DTC U1001-U1254

ESC, IPC, PCM, SDM

U1057

DTC U1001-U1254

BCM, IPC

U1064

DTC U1001-U1254

DDM, ESC, FPDM, HVAC, IPC, PCM, Radio, RSA, SDM, VCIM

U1088

DTC U1001-U1254

VCIM

U1096

DTC U1001-U1254

BCM, SDM

U1128

DTC U1001-U1254

Audio Amplifier, RSA

U1129

DTC U1001-U1254

Radio

U1151

DTC U1001-U1254

Radio

U1152

DTC U1001-U1254

BCM

U1160

DTC U1001-U1254

BCM, DSM, ESC, FPDM

U1161

DTC U1001-U1254

BCM, DDM, DSM, ESC

U1166

DTC U1001-U1254

DDM

U1167

DTC U1001-U1254

Radio

U1300

DTC U1300, U1301, or U1305

EBCM, ESC, HVAC, IPC, PCM, Radio, RSA, SDM, VCIM

U1301

DTC U1300, U1301, or U1305

EBCM, ESC, HVAC, IPC, PCM, Radio, RSA, SDM, VCIM

U1305

DTC U1300, U1301, or U1305

Audio Amplifier, BCM, DDM, DSM, FPDM, TCSCM