GM Service Manual Online
For 1990-2009 cars only

DTC

Diagnostic Procedure

Module(s)

U1000

DTC U1000

BCM, SDM, PSCM, VCIM

U1016

DTC U1001-U1254

PSCM, SDM, VCIM

U1024

DTC U1001-U1254

PSCM

U1048

DTC U1001-U1254

BCM

U1064

DTC U1001-U1254

PSCM, SDM, VCIM

U1088

DTC U1001-U1254

BCM, VCIM

U1096

DTC U1001-U1254

BCM, PSCM, SDM

U1151

DTC U1001-U1254

BCM

U1300

DTC U1300, U1301, or U1305

BCM, PSCM, SDM, VCIM

U1301

DTC U1300, U1301, or U1305

BCM, PSCM, SDM, VCIM

U2100

DTC U2100

EBCM, ECM (6 Cyl.)

U2102

DTC U2102 or U2103

ECM (6 Cyl.)

U2103

DTC U2102 or U2103

ECM (4 Cyl.)

U2104

DTC U2104

BCM, ECM

U2105

DTC U2105-U2108

BCM, EBCM, TCM

U2106

DTC U2105-U2108

BCM, EBCM, ECM

U2107

DTC U2105-U2108

EBCM, ECM, TCM

U2108

DTC U2105-U2108

BCM, ECM, TCM