GMC fault codes

Coverage shown is GM data: 17,703 codes · 2,212 vehicle records · 180 ECU records · 10,756 live-data parameters.

GMC shares fault-code data with GM. Data may not cover GMC-specific systems.

Codes 17,703

Code	Description	Brands	System
U06B0	No description available	6	Network
U06B4	No description available	6	Network
U06B5	No description available	6	Network
U06B6	No description available	6	Network
U06B7	No description available	6	Network
U0710	Steering Wheel Angle Signal	6	Network
U0999	No description available	8	Network
U09AE	No description available	6	Network
U09B1	No description available	6	Network
U1000	CAN-No response	35	Network
U1001	CAN passive error	36	Network
U1002	CAN line error	31	Network
U1003	No communication with towing system control module (J345); Open circuit	33	Network
U1004	Invalid data from towing system control module (J345)	30	Network
U1005	CAN network	24	Network
U1006	Low voltage detected	24	Network
U1007	General fault on suspension and wheel CAN network	23	Network
U1008	General fault on suspension and wheel CAN network	29	Network
U1009	ECU silent on suspension and wheel CAN network	27	Network
U100C	No. 10 BMU and BMS communication abnormality	9	Network
U100E	Ambient Temperature Low	11	Network
U100F	Lost Communication With Battery Monitoring Sensor 'B'	9	Network
U1010	Lost communication with the powertrain interface ECU	29	Network
U1011	Loss of serial communications for class 2 devices	25	Network
U1012	Loss of serial communications for class 2 devices	26	Network
U1013	Control Module Not Coded	26	Network
U1014	Loss of serial communications for class 2 devices	25	Network
U1015	Loss of serial communications for class 2 devices	17	Network
U1016	Control module for ABS brakes: implausible message received	23	Network
U1017	Loss of serial communications for class 2 devices	22	Network
U1018	Loss of serial communications for class 2 devices	17	Network
U1019	Control module for instrument cluster: missing signal for oil level/temperature; Short to plus	20	Network
U101A	Selector lever no communication with control unit in dash panel insert	8	Network
U101B	Selector lever no communication with gearbox control unit	8	Network
U101C	Selector lever no communication with data bus diagnostic interface	8	Network
U101D	Power steering control module: no communication	8	Network
U101E	Lost communication with PCM node J	7	Network
U101F	Lost communication with PCM node l	7	Network
U1020	Loss of serial communications for class 2 devices	17	Network
U1021	Loss of serial communications for class 2 devices	20	Network
U1022	Loss of serial communications for class 2 devices	17	Network
U1023	De-Inhibit Completed Previously - Vehicle is not in Inhibited state. Clear codes and verify if DTC is no longer present in BCM	18	Network
U1024	Loss of serial communications for class 2 devices	18	Network
U1025	Loss of serial communications for class 2 devices	17	Network
U1026	Vehicles with code JQYA	18	Network
U1027	Vehicles with code JFZA	17	Network
U1028	Loss of Serial Communications for Class 2 Devices	14	Network
U1029	Loss of Serial Communications for Class 2 Devices	13	Network
U102A	Internal Master/Slave CAN bus 2: defective; Lower limit exceeded	10	Network
U1030	Are you programming the module to resolve DTC ?	14	Network

Some brand data is extracted from diagnostic files and may contain manufacturer-specific wording. General SAE J2012 descriptions are used where available.