AI Damage2026 GMC Terrain: common problems
The maker issued 173 service bulletins for this year. Details by component below, with sources.
Key figures
- Technical service bulletins (TSB)
- 173
Engines and transmissions
US-market versions per EPA. On the right: how many NHTSA complaints name this engine or transmission type.
- 1.5 L · petrol · turbo · 4 cyl
- automatic, 8-speed
- CVT
Drive: FWD, AWD
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Electrical system | 0 | 0 | 8 |
| Structure | 0 | 0 | 3 |
| Engine | 0 | 0 | 2 |
| Forward collision avoidance | 0 | 0 | 1 |
| Fuel/propulsion system | 0 | 0 | 1 |
| Lane departure | 0 | 0 | 1 |
| Service brakes | 0 | 0 | 1 |
| Steering | 0 | 0 | 1 |
| Visibility | 0 | 0 | 1 |
| Wheels | 0 | 0 | 1 |
| Other | 0 | 0 | 159 |
Comparison
What to check before buying
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
- Structure. Rails, pillars, panel gaps, signs of pulling or welding.
- Engine. Cold start, unusual noises, oil leaks and engine codes.
- Forward collision avoidance. Radar and camera: calibration after bumper or windshield replacement.
Manufacturer service bulletins
Bulletin titles as filed with NHTSA.
- This Preliminary information communicates the potential for shudder and all cylinder misfire concerns on…
- This Preliminary Information, describes a condition where the HVAC will make noise when changing modes…
This Preliminary Information, describes a condition where the HVAC will make noise when changing modes while HVAC is warm. Engineering is aware and no fix available at the time.
- This Preliminary information describes an issue where the fuel pump makes a loud noise that engineering is…
This Preliminary information describes an issue where the fuel pump makes a loud noise that engineering is currently investigating.
- This preliminary information is for technicians that may see DTCs that are history and should not perform…
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.
- This Preliminary information communicates to dealers a procedure to reset the radio
- This Preliminary information communicates an issue with the virtual garage door opener not programming to…
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 provides Diagnostics tips on how the LIN bus works and how to diagnosis it
- This PI is to instruct dealer on diagnostic procedures that need to be completed prior to replacing a…
- This preliminary information addresses a clunk noise in the front suspension traced to the control arm…
- This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance
- This preliminary information is to inform technicians that GM is placing the B174W Front View Camera…
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…
- This Preliminary information communicates to the technicians a diagnostic tip if a technician loses…
This Preliminary information communicates to the technicians a diagnostic tip if a technician loses communication with the image processor #2 and how to restore communication
NHTSA lists 173 bulletins for this year; the 12 newest are shown here.
Other years of this model
Questions and answers
What are the most common problems with the 2026 GMC Terrain?
There are no owner complaints in the NHTSA data for this year; the data comes from 173 manufacturer service bulletins.
How many service bulletins (TSB) were issued for the 2026 GMC Terrain?
NHTSA lists 173 manufacturer service bulletins for this year. A bulletin tells dealers how to diagnose or fix a known issue; it is not a recall.
Should I buy a 2026 GMC Terrain from a US auction?
Owner complaints describe defects, not crash damage. Before bidding, check the components listed above and review the lot photos: VinWind builds a report of visible and hidden damage by VIN.
Other 2026 models
Read also
Sources: public NHTSA data (USA): service bulletins and owner complaints; YouTube: links to videos credited to their authors. Complaints are owner statements not verified by NHTSA, and describe defects rather than crash damage. Data updated 2026-11-04.