GM Service Manual Online
For 1990-2009 cars only

Description

Module

DTC U1000 and DTC U1255 Class 2 Communication Malfunction

PCM, EBCM, BCM, SDM

DTC U1016 Loss of Communications with PCM. Refer to DTC U1001-U1254 Loss of XXX Communications

EBCM, BCM, SDM

DTC U1040 Loss of Class 2 Communications with ABS. Refer to DTC U1001-U1254 Loss of XXX Communications

PCM, BCM, SDM

DTC U1064 Loss of Communications with BCM. Refer to DTC U1001-U1254 Loss of XXX Communications

PCM, EBCM, SDM

DTC U1088 Loss of Communications with SDM. Refer to DTC U1001-U1254 Loss of XXX Communications

PCM, EBCM, BCM

DTC U1300 Class 2 Data Link Low

PCM, EBCM, BCM, SDM

DTC U1301 Class 2 Data Link High

PCM, EBCM, BCM, SDM