2026 GMC Terrain TSBs
158 manufacturer communications for the 2026 GMC Terrain sit in NHTSA's public file. A TSB is factory repair guidance, not a recall — the repair is not automatically free. The 2026 Terrain problem report covers complaints, recalls, and investigations.
What the bulletins cover
Warranty extensions, campaigns & software updates
Worth checking your VIN against — these can mean free or reimbursed work if your vehicle qualifies.
• Smoother vehicle startups in cold temperatures
• Improvements to the performance of driver assistance features • Fixes to help ensure accurate driver display messages and alerts
• Fixes to help prevent loss of functionality for connectivity features such as OnStar, Wi-Fi, Navigation, and Super Cruise.
Certain vehicles may have a condition in which the Telematic Control Module may enter an unrecoverable state. Dealers are to reprogram the Telematic Control Module. IMPORTANT: The module may be several software versions behind and could take multiple programming events to bring…
Certain vehicles may have a condition in which the Telematic Control Module may enter an unrecoverable state. Dealers are to reprogram the Telematic Control Module. IMPORTANT: The module may be several software versions behind and could take multiple programming events to bring…
• Improvements to the availability of driver assistance features.
Certain vehicles, may have a condition in which the Telematic Control Module may enter an unrecoverable state. Dealers are to reprogram the Telematic Control Module. Important: The module may be several software versions behind and could take multiple programming events to bring…
• This update contains a required software change to help improve the overall software update and diagnostics process. Be sure to install this update to be able to receive future software updates. • Improves traction and stability control when accelerating or on uneven terrain.…
Great News! Your vehicle keeps getting better. This update contains a required software change to help improve the overall software update and diagnostics process. Be sure to install this update to be able to receive future software updates. During the update process, your radio…
• Improvements to the performance of vehicle software updates. • Fixes to help prevent loss of functionality for connectivity features, including maps and Wi-Fi. • Fixes to help prevent erroneous emergency calls from vehicle. • Fixes for deleting digital keys. • Fixes to help…
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.
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.
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…
Most recent service bulletins
The 20 most recent of 158 communications on file. The complete set is searchable on NHTSA's page for this vehicle.
This Preliminary Information describes steps needed to resolve a rattle or vibration from the door panel.
This preliminary information is to inform technicians that GM is placing the B174W Front View Camera Module (ACP2) on part restriction due to elevated replacement rates and ongoing engineering investigation. Technicians must not replace the front camera module unless they have:…
This Preliminary information communicates the potential for shudder and all cylinder misfire concerns on RPO LSD
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.
This PI states that if SDGM DTC P0604/P0607 is set and no other SDGM DTCs are present, clear DTCs and reset the SDGM. Advises of how to contact PQC to authorize SDGM replacement.
This PI advise dealers If U3000 is present, follow the correct service doc by Symptom Byte before contacting PQC; if not present, verify the camera is clean, then contact PQC if no issue is found.
PI to help diagnose A/C concern
This Preliminary information communicates an issue with an OTA pending message still displayed after an OTA event and how to reset/clear the message.
This preliminary information is to inform technicians that GM is placing the B174W Front View Camera Module (ACP2) on part restriction due to elevated replacement rates and ongoing engineering investigation. Technicians must not replace the front camera module unless they have:…
This PI communicates a possible speedometer and/or odometer error due to an error in the parts catalog
This Preliminary information communicates to technicians to remove the pulley assembly and inspect the drive chain and pulley surfaces.
This PI addresses leaks from the case half and provides repair direction to dealer technicians
PIP6032B provides diagnostic direction for dealers when encountering transmission leaks
This preliminary information is to inform technicians that GM is placing the B174W Front View Camera Module (ACP2) on part restriction due to elevated replacement rates and ongoing engineering investigation. Technicians must not replace the front camera module unless they have:…
This preliminary information is to inform technicians and customers that the voice command will be inoperative when trying to open applications. Engineering is investigating and this PI will be converted to a bulletin when a repair is available.
This Preliminary information communicates to dealership technicians that if they encounter a customer vehicle with this concern, to perform the steps listed and should be able to reprogram the module and correct this.
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.
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.
This Preliminary Information is to inform customers to follow diagnostics if resetting, disconnecting the module did not correct it.
This Preliminary information communicates to dealers a procedure to reset the radio.
Every number on this page is a count of records in the federal complaint, recall, and investigation files published by NHTSA's Office of Defects Investigation. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.