GM Service Manual Online
For 1990-2009 cars only

DTC

Diagnostic Procedure

Module(s)

C0035 - C0051

DTC C0035-C0051

EBCM

C0060 - C0095

DTC C0060-C0095

EBCM/TCS

C0110

DTC C0110

EBCM

C0121

DTC C0121

EBCM

C0141-C0156

DTC C0141-C0156

EBCM

C0161

DTC C0161

EBCM

C0235-C0237

DTC C0235-C0237, C035-C037 or P1504

EBCM

C0240

DTC C0240

EBCM/TCS

C0241 or P1571

DTC C0241 or P1571

EBCM/TCS

C0244 or P1689

DTC C0244 or P1689

EBCM/TCS

C0245

DTC C0245

EBCM

C0896

DTC C0896

EBCM

C0450

Diagnostic System Check - Variable Effort Steering in Variable Effort Steering

EBCM

P1573

Diagnostic Trouble Code (DTC) List in Engine Controls

PCM

U1001-U1254

DTC U1001-U1254 in Data Link Communications

SDM-VIU

U1304

DTC U1304 in Data Link Communications

PCM