GM Service Manual Online
For 1990-2009 cars only

Description

Module

DTC U1000 Serial Data Line Malfunction DTC U1000 and DTC U1255 Class 2 Communication Malfunction

RSS

DTC U1016 Loss of Communications with PCM DTC U1001-U1254 Loss of XXX Communications

ABS, HCM, IPC, MMM, MSM, PZM, RFA, RSS

DTC U1040 Loss of Communications with ABS DTC U1001-U1254 Loss of XXX Communications

IPC, RSS

DTC U1056 Loss of Communications with RSS DTC U1001-U1254 Loss of XXX Communications

ABS

DTC U1064 Loss of Communications with PZM DTC U1001-U1254 Loss of XXX Communications

ABS, HCM, CCP, IPC, IRC, MMM, MSM, PCM, PHN, RFA, RSS, SDM

DTC U1088 Loss of Communications with SDM DTC U1001-U1254 Loss of XXX Communications

IPC, PZM

DTC U1096 Loss of Communications with IPC DTC U1001-U1254 Loss of XXX Communications

HCM, CCP, IRC, PCM, PHN, PZM, SDM

DTC U1144 Loss of Communications with PHN DTC U1001-U1254 Loss of XXX Communications

IPC, IRC

DTC U1152 Loss of Communications with HCM DTC U1001-U1254 Loss of XXX Communications

CCP, IPC, PCM, RSS

DTC U1153 Loss of Communications with CCP DTC U1001-U1254 Loss of XXX Communications

HCM, IPC, PZM

DTC U1169 Loss of Communications with MMM DTC U1001-U1254 Loss of XXX Communications

HCM, CCP, IRC, PCM, PHN, PZM, SDM

DTC U1255 Serial Data Line Malfunction DTC U1000 and DTC U1255 Class 2 Communication Malfunction

ABS, HCM, CCP, IPC, IRC, MMM, MSM, PZM, RFA, SDM

DTC U1300 Class 2 Short to Ground DTC U1300 Class 2 Short to Ground

ABS, IRC, MMM, MSM, PZM, RFA, RSS, SDM

DTC U1301 Class 2 Short to Battery DTC U1301 Class 2 Short to Battery

ABS, IRC, PZM, SDM