GM Service Manual Online
For 1990-2009 cars only

DTC

Diagnostic Procedure

Module

U1000

DTC U1000 and U1255

EBCM, PCM, PK3, SDM

U1016

DTC U1001-U1254

DIC, EBCM, IPC, Radio, SDM

U1040

DTC U1001-U1254

DIC, IPC, PCM, SDM

U1088

DTC U1001-U1254

VIU

U1096

DTC U1001-U1254

DIC, MSM, PCM, PK3, SDM

U1192

DTC U1001-U1254

IPC

U1255

DTC U1000 and U1255

DIC, IPC, MSM, Radio, VIU

U1300

DTC U1300, U1301, or U1305

EBCM, PCM, Radio, SDM, VIU

U1301

DTC U1300, U1301, or U1305

EBCM, PCM, Radio, SDM, VIU

U1305

DTC U1300, U1301, or U1305

DIC, MSM