GM Service Manual Online
For 1990-2009 cars only

DTC

Description

U1000

Class 2 Communication Malfunction. Refer to DTC U1000 and DTC U1255 Class 2 Communication Malfunction .

U1016

Lost Communication with PCM. Refer to DTC U1001-U1254 Lost Communication with XXX .

U1040

Lost Communication with ABS. Refer to DTC U1001-U1254 Lost Communication with XXX .

U1088

Lost Communication with SIR. Refer to DTC U1001-U1254 Lost Communication with XXX .

U1096

Lost Communication with IPC. Refer to DTC U1001-U1254 Lost Communication with XXX .

U1192

Lost Communication with PK3. Refer to DTC U1001-U1254 Lost Communication with XXX .

U1255

Class 2 Communication Malfunction. Refer to DTC U1000 and DTC U1255 Class 2 Communication Malfunction .

U1300

Class 2 Data Link Low. Refer to DTC U1300 Class 2 Data Link Low .

U1301

Class 2 Data Link High. Refer to DTC U1301 Class 2 Data Link High .

U1305

Class 2 Data Link Low or High. Refer to DTC U1305 Class 2 Data Link Low or High .