GM Service Manual Online
For 1990-2009 cars only

DTC

Diagnostic Procedure

Module

U0073

DTC U0073

ECM, TCM

U0100

DTC U0100-U0299

TCM

U0101

DTC U0100-U0299

ECM

U0105

DTC U0100-U0299

ECM, TCM

U0106

DTC U0100-U0299

ECM, TCM

U0111

DTC U0100-U0299

PCM

U0120

DTC U0100-U0299

PCM

U0131

DTC U0100-U0299

PCM

U0293

DTC U0100-U0299

PCM

U1000

DTC U1000

Audio Amplifier, BCM, DDM, DRR, DSM, EBCM, ECM/PCM, FPDM, HVAC Control Module, IPC, Radio, RWSCM, CDX, RSA, RSE, SDM, TCM, TCSCM, VCIM

U1016

DTC U1001-U1254

Audio Amplifier, BCM, DDM, DRR, DSM, EBCM, FPDM, HVAC Control Module, IPC, Radio, RWSCM, SDM, TCM, TCSCM, VCIM

U1023

DTC U1001-U1254

HVAC Control Module

U1024

DTC U1001-U1254

BCM, IPC, PCM, RADIO, RWSCM

U1026

DTC U1001-U1254

BCM, EBCM, ECM/PCM, IPC, RWSCM, SDM, TCM

U1041

DTC U1001-U1254

BCM, DDM, ECM/PCM, SDM, TCM

U1048

DTC U1001-U1254

EBCM, ECM/PCM, IPC

U1064

DTC U1001-U1254

DDM, EBCM, ECM/PCM, FPDM, HVAC Control Module, IPC, Radio, SDM, TCSCM, VCIM

U1088

DTC U1001-U1254

BCM, IPC, VCIM

U1096

DTC U1001-U1254

BCM, IPC, SDM

U1128

DTC U1001-U1254

Audio Amplifier, CDX, VCIM

U1129

DTC U1001-U1254

DRR, Radio, VCIM

U1130

DTC U1001-U1254

Audio Amplifier, Radio

U1137

DTC U1001-U1254

Audio Amplifier, BCM, IPC, Radio

U1151

DTC U1001-U1254

Audio Amplifier, BCM, IPC, Radio

U1152

DTC U1001-U1254

BCM

U1154

DTC U1001-U1254

BCM, Radio

U1160

DTC U1001-U1254

BCM, DSM, FPDM

U1161

DTC U1001-U1254

BCM, DDM, DSM

U1166

DTC U1001-U1254

BCM, DDM

U1167

DTC U1001-U1254

Audio Amplifier, BCM, DRR, IPC, Radio

U1241

DTC U1241 in SIR

SDM

U1300

DTC U1300, U1301, or U1305

DRR, EBCM, ECM/PCM, HVAC Control Module, IPC, Radio, RWSCM, CDX, RSA, RSE, SDM, TCM, TCSCM, VCIM

U1301

DTC U1300, U1301, or U1305

DRR, EBCM, ECM/PCM, HVAC Control Module, IPC, Radio, RWSCM, CDX, RSA, RSE, SDM, TCM, TCSCM, VCIM

U1305

DTC U1300, U1301, or U1305

Audio Amplifier, BCM, DDM, FPDM, MSM-Driver

U1800

DTC U1800, U2105, U2106, or U2108

ECM, TCM

U1881

DTC U1881-U1899

PCM

U1882

DTC U1881-U1899

PCM

U1883

DTC U1881-U1899

PCM

U1884

DTC U1881-U1899

PCM

U1885

DTC U1881-U1899

PCM

U1886

DTC U1881-U1899

PCM

U1887

DTC U1881-U1899

PCM

U1888

DTC U1881-U1899

PCM

U1889

DTC U1881-U1899

PCM

U1890

DTC U1881-U1899

PCM

U1891

DTC U1881-U1899

PCM

U1892

DTC U1881-U1899

PCM

U1893

DTC U1881-U1899

PCM

U1894

DTC U1881-U1899

PCM

U1895

DTC U1881-U1899

PCM

U1896

DTC U1881-U1899

PCM

U1897

DTC U1881-U1899

PCM

U1898

DTC U1881-U1899

PCM

U1899

DTC U1881-U1899

PCM

U2104

DTC U2104

ECM, TCM

U2105

DTC U1800, U2105, U2106, or U2108

TCM

U2106

DTC U1800, U2105, U2106, or U2108

ECM