GM Service Manual Online
For 1990-2009 cars only

DTC

Diagnostic Procedure

Modules

U1000

DTC U1000 and U1255

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

U1016

DTC U1001-U1254

Audio Amplifier, BCM, DDM, EBCM, ESC, FPDM, HVAC, IPC, MSM-Driver, 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, ESC, FPDM, MSM-Driver

U1161

DTC U1001-U1254

BCM, DDM, ESC, MSM-Driver

U1166

DTC U1001-U1254

DDM

U1167

DTC U1001-U1254

Radio

U1255

DTC U1000 and U1255

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

U1300

DTC U1300, U1301, or U1305

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

U1301

DTC U1300, U1301, or U1305

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

U1305

DTC U1300, U1301, or U1305

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