2026 GMC Terrain Technical Service Bulletins

175 technical service bulletins (TSBs) are on record for the 2026 GMC Terrain. TSBs are notes manufacturers send to dealers about repair procedures for issues seen in the field. They are not recalls and do not by themselves mean a vehicle has a fault.

• 11026070Nov 26, 2025Other or unknown. This preliminary information speaks to an issue the the tire monitor learn tool and the work around until the next software release.
• 11026062Nov 25, 2025Other or unknown. This preliminary information is for technicians that may see DTCs that are history and should not perform any part replacements. They should follow the notes mentioned prior to anything being replaced.
• 11025755Nov 20, 2025Other or unknown. This Preliminary Information communication provides information to the technician about vehicles that have had multiple repair attempts that are being performed on customer’s vehicles that exhibit vibration conditions without utilizing the support of General Motors Technical Assistance Center.
• 11025574Nov 13, 2025Other or unknown. This PI is to instruct dealer on diagnostic procedures that need to be completed prior to replacing a radio or IPC display
• 11025572Nov 11, 2025Other or unknown. This PI is to instruct dealer on diagnostic procedures that need to be completed prior to replacing a radio or IPC display
• 11025996Nov 4, 2025Body and structure, Electrical system. This service bulletin provides repair information to correct a customer concern of Vibration Rattle or Boom at 1800 to 2000 RPM.
• 11024759Oct 28, 2025Other or unknown. This Preliminary information communicates diagnostic aids for a surge or fishbite concern
• 11024644Oct 28, 2025Other or unknown. Fixes to help prevent loss of functionality for OnStar, infotainment apps, and connectivity features. During the update process, your radio may stay on up to 5 minutes after you exit the vehicle. This is expected behavior when an update package is onboard the vehicle.
• 11024755Oct 27, 2025Other or unknown. This PI advises to get a session log for transmissions with broken chains
• 11024704Oct 23, 2025Other or unknown. This Preliminary Information is to inform customers to follow diagnostics if resetting, disconnecting the module did not correct it.
• 11024698Oct 20, 2025Other or unknown. This Preliminary Information communicates a intermittent misfire, surge, hesitation, chuggle with a potential MIL concerning a potential skewed position 1 oxygen sensor. 2026 model year being added with break point.
• 11024460Oct 18, 2025Other or unknown. This Preliminary information communicates to the field on how to diagnosis a GPS issue with the Telematic module with no DTC's
• 11024455Oct 17, 2025Other or unknown. This Preliminary information communicates to the field on how to diagnosis a GPS issue with the Telematic module with no DTC's
• 11024443Oct 17, 2025Other or unknown. This Preliminary Information communicates a potential MIL / SES due to P04FB that Engineering is currently working on a design improvement.
• 11024439Oct 4, 2025Other or unknown. The Driver Information Center may display a message of Transport Mode On after the ignition is cycled.
• 11024438Oct 4, 2025Other or unknown. This Preliminary Information is to inform customers to follow diagnostics if resetting, disconnecting the module did not correct it.
• 11025553Oct 2, 2025Electrical system, Body and structure. This service bulletin provides repair information to correct a customer concern of Vibration Rattle or Boom at 1800 to 2000 RPM.
• 11023907Oct 1, 2025Other or unknown. This Preliminary Information is to inform customers to follow diagnostics if resetting, disconnecting the module did not correct it.
• 11023903Oct 1, 2025Other or unknown. This information provides software update information for the K73 Telematics module to correct the symptoms described.
• 11023902Sep 30, 2025Other or unknown. This Preliminary information communicates the possibility of reduced power with dtc P0237 and/or p0299 due to damaged Charge Air Inlet Pipe connection at Turbocharger.
• 11023342Sep 15, 2025Other or unknown. This Preliminary Information is to inform customers to follow diagnostics if resetting, disconnecting the module did not correct it.
• 11023091Sep 9, 2025Other or unknown. New Vehicle Monitoring Programs Section in IVH
• 11022782Aug 30, 2025Other or unknown. This information provides software update information for the K73 Telematics module to correct the symptoms described.
• 11022130Aug 19, 2025Other or unknown. Diagnostic Guidance for U3000-97 Long Range Radar Blocked
• 11022086Aug 15, 2025Other or unknown. This Preliminary information communicates an issue with the virtual garage door opener not programming to a garage opener. Engineering is working on a new module.
• 11022084Aug 14, 2025Other or unknown. This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
• 11021872Aug 14, 2025Other or unknown. On certain vehicles equipped with the Black Edition package, the customer was inadvertently over-charged for the Accessory Black Nameplate Kit. Dealers will provide the customer with a reimbursement check in the amount of $175.00 USD, $295.00 CAD.
• 11022066Aug 9, 2025Other or unknown. This Preliminary information communicates known concern with a lack of power on acceleration on new stock units that is being investigated.
• 11022068Aug 8, 2025Other or unknown. This Preliminary information communicates an issue with super cruise unavailable due to the driver's monitoring camera and dealers to replace the camera.
• 11022065Aug 7, 2025Other or unknown. This Preliminary information communicates known concern with misfire detection and ECM resets.
• 11021792Aug 7, 2025Other or unknown. This Preliminary Information communication provides information to the technician about vehicles that have an intermittent no crank, no start, or start stall concern with the security light coming on. Technician may find Diagnostic Trouble Codes B3055, B3060, B3935, C0750, C0755, C0760, C0765, and/or C0775.
• 11022063Aug 4, 2025Other or unknown. This PI addresses leaks from the case half and provides repair direction to dealer technicians
• 11020963Jul 26, 2025Other or unknown. This Preliminary Information is to inform customers to follow diagnostics if resetting, disconnecting the module did not correct it. It also informs them to follow the bulletins as necessary to USB update the modules.
• 11020964Jul 25, 2025Other or unknown. This preliminary information is for technicians that will have this message after USB updating the radio. The repair should not involve replacing a module as pressing the reset button will correct this issue.
• 11020809Jul 18, 2025Other or unknown. This PI communicates the requirement to provide a pico file to receive diagnostic assistance from TAC.
• 11020810Jul 17, 2025Other or unknown. This PI addresses leaks from the case half and provides repair direction to dealer technicians
• 11020880Jul 16, 2025Other or unknown. This preliminary information PI states to not replace anything at the dealership for this concern and engineering is investigating.
• 11020879Jul 16, 2025Other or unknown. This preliminary information PI states to not replace anything at the dealership for this concern and engineering is investigating.
• 11020811Jul 16, 2025Other or unknown. This Preliminary Information communication provides information to the technician about the use of J-35616-64B and Mini 50 terminal test probe, replacement terminals, and terminated leads.
• 11020681Jul 2, 2025Other or unknown. This information provides software update information for the K73 Telematics module to correct the symptoms described.
• 11020680Jul 2, 2025Other or unknown. This Preliminary Information is to inform customers to follow diagnostics if resetting, disconnecting the module did not correct it. It also informs them to follow the bulletins as necessary to USB update the modules.
• 11019983Jun 30, 2025Other or unknown. This Preliminary Information communicates the DTC's setting in the SDGM are false, steps to resolve and not to replace the module.
• 11019977Jun 30, 2025Other or unknown. This Preliminary Information communicates a intermittent misfire, surge, hesitation, chuggle with a potential MIL concerning a potential skewed position 1 oxygen sensor. 2026 model year being added with break point.
• 11019872Jun 26, 2025Other or unknown. This Preliminary information communicates a diagnostic tip on how to resolve a issue if the serial data authentication configuration did not complete correctly.
• 11019846Jun 19, 2025Other or unknown. This Preliminary information communicates a diagnostic tip on how to resolve a issue of the horn sounding when vehicle doors are being closed and the key in vehicle reminder set to off.
• 11019836Jun 19, 2025Other or unknown. PIP6032B provides diagnostic direction for dealers when encountering transmission leaks
• 11019835Jun 19, 2025Other or unknown. This Preliminary information communicates known concern with cooling fan and the current repair.
• 11019840Jun 18, 2025Other or unknown. This PI has contact information to investigate potential low fluid concerns
• 11019829Jun 18, 2025Other or unknown. This PI communicates a procedure to clean oil leaking from the rain sensor.
• 11019912Jun 16, 2025Other or unknown. This software update includes the following, if your vehicle is equipped: • Improvements to Apple CarPlay performance. During the update process, your radio may stay on up to 5 minutes after you exit the vehicle. This is expected behavior when an update package is onboard the vehicle. Do not service your vehicle during installation. If you are not using your vehicle's built-in 4G LTE connection, then applicable…

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