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Service bulletins for the 2011 GMC Terrain

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

1756 on file from NHTSA, as of 2026-10-19.

About C0050 on the 2011 GMC Terrain: what the code means, and the bulletins and recalls about the same components.

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Only bulletins with trouble code: C0050 are shown. Show all

Bulletins, newest first
PIT5427B2018-12-17. Service bulletin. POWER TRAIN; SERVICE BRAKES; ELECTRONIC STABILITY CONTROL:AUTOMATIC (ASC); STEERING; SUSPENSION. This Preliminary Information communication provides information to the technician about vehicles that have a Service Engine Soon Malfunction Indicator Lamp, service Antilock Braking System, Service Stabilitrak, Service All Wheel Drive, Service Suspension Control, or Hard Steering. Technician may find the following Diagnostic Trouble Codes stored C0196, C0186, C0287, C0710, C0045, C0050, C0800, U0077, U0074, U0125, U0126, U0100, U0101, U0121, U0415, U0432, U0121, and or U0140. Technician should inspect X411 connector for damage or corrosion. Technician will replace any terminals with damage or corrosion.
PIT5427A2018-01-22. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This Preliminary Information communication provides information to the technician about vehicles that have a Service Engine Soon Malfunction Indicator Lamp, service Antilock Braking System, Service Stabilitrak, Service All Wheel Drive, Service Suspension Control, or Hard Steering. Technician may find the following Diagnostic Trouble Codes stored C0196, C0186, C0287, C0710, C0045, C0050, C0800, U0077, U0074, U0125, U0126, U0100, U0101, U0121, U0415, U0432, U0121, and or U0140. Technician should inspect X411 connector for damage or corrosion. Technician will replace any terminals with damage or corrosion.
PIT54272017-08-15. Service bulletin. SUSPENSION; EQUIPMENT:ELECTRICAL; ELECTRONIC STABILITY CONTROL:AUTOMATIC (ASC); SERVICE BRAKES, AIR:ANTILOCK. This Preliminary Information communication provides information to the technician about vehicles that have a Service Engine Soon Malfunction Indicator Lamp, service Antilock Braking System, Service Stabilitrak, Service All Wheel Drive, Service Suspension Control, or Hard Steering. Technician may find the following Diagnostic Trouble Codes stored C0196, C0186, C0287, C0710, C0045, C0050, C0800, U0077, U0074, U0125, U0126, U0100, U0101, U0121, U0415, U0432, U0121, and or U0140. Technician should inspect X411 connector for damage or corrosion. Technician will replace any terminals with damage or corrosion.
PIT54002017-08-15. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. This Preliminary Information communication provides information to the technician for vehicles with a malfunction indicator lamp on, service stabilitrak, power steering or vehicle soon message displayed on the drivers information center. The technician may find the following diagnostic trouble codes U0073, U0100, U0101, U0121 U0140 C0045, C0050 in the body control module, electronic brake control module, engine control module, or the transmission control module. There may be multiple loss of communication codes current or history for high speed General Motors Local Area Network. Inspect the connections at connector X411 for corrosion due to the location of the connector under the vehicle by the rear wheel.
PIT5171D2017-08-15. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This Preliminary Information communication provides information to the technician about vehicles that have may an intermittent Service Traction/Stability, ABS indicator or Service All wheel Drive message on the Driver Information Center. Technician may find Diagnostic Trouble Codes U0125 00 U0074 00 U0073 and or C0045 C0050 symptom 06. Technician will need to inspect the X411 connecter for a wire break inside the wire harness. Also inspect the wire harness insulation within 1 inch of the X411 before and after connecter. Repair any damaged wiring to correct the concern.
PIT5171C2017-08-15. Service bulletin. ELECTRICAL SYSTEM:WIRING; AIR BAGS. This Preliminary Information communication provides information to the technician about vehicles that have may an intermittent Service Traction/Stability, ABS indicator or Service All wheel Drive message on the Driver Information Center. Technician may find Diagnostic Trouble Codes U0125 00 U0074 00 U0073 and or C0045 C0050 symptom 06. Technician will need to inspect the X411 connecter for a wire break inside the wire harness. Also inspect the wire harness insulation within 1 inch of the X411 before and after connecter. Repair any damaged wiring to correct the concern.
PIC5428E2017-08-15. Service bulletin. SERVICE BRAKES; WHEELS; ELECTRICAL SYSTEM. This Preliminary Information communication provides information to the technician on how to diagnose and repair vehicles that may have the Antilock Braking System, Service Traction Control System, and/or Service Stabilitrak lights are on. The Electronic Brake Control Module may have one or more of the following Diagnostic Trouble Codes C0035-C0050 with specifically symptom 18, 5A, or 0F. Technician will gain access to the correct wheel bear per the Diagnostic Trouble Code that is set. If debris is found on the magnetic encoder ring it will needed to be cleaned.
PIC5428D2017-08-15. Service bulletin. SERVICE BRAKES; ELECTRICAL SYSTEM. This Preliminary Information communication provides information to the technician on how to diagnose and repair vehicles that may have the Antilock Braking System, Service Traction Control System, and/or Service Stabilitrak lights are on. The Electronic Brake Control Module may have one or more of the following Diagnostic Trouble Codes C0035-C0050 with specifically symptom 18, 5A, or 0F. Technician will gain access to the correct wheel bear per the Diagnostic Trouble Code that is set. If debris is found on the magnetic encoder ring it will needed to be cleaned.
PIT5171B2017-08-15. Service bulletin. ELECTRICAL SYSTEM:WIRING; SERVICE BRAKES, AIR:ANTILOCK:ABS WARNING LIGHT; ELECTRICAL SYSTEM; SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:ABS WARNING LIGHT. This Preliminary Information communication provides information to the technician about vehicles that have may an intermittent Service Traction/Stability, ABS indicator or Service All wheel Drive message on the Driver Information Center. Technician may find Diagnostic Trouble Codes U0125 00 U0074 00 U0073 and or C0045 C0050 symptom 06. Technician will need to inspect the X411 connecter for a wire break inside the wire harness. Also inspect the wire harness insulation within 1 inch of the X411 before and after connecter. Repair any damaged wiring to correct the concern.
PIC5428F2017-08-15. Service bulletin. SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP; SERVICE BRAKES, AIR:ANTILOCK; SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:CONTROL UNIT/MODULE; SERVICE BRAKES, AIR:ANTILOCK:CONTROL UNIT/MODULE. This Preliminary Information communication provides information to the technician on how to diagnose and repair vehicles that may have the Antilock Braking System, Service Traction Control System, and/or Service Stabilitrak lights are on. The Electronic Brake Control Module may have one or more of the following Diagnostic Trouble Codes C0035-C0050 with specifically symptom 18, 5A, or 0F. Technician will gain access to the correct wheel bear per the Diagnostic Trouble Code that is set. If debris is found on the magnetic encoder ring it will needed to be cleaned.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.