# Service bulletins for the 2027 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.

16 bulletins from NHTSA, as of 2026-10-19.

- [PIT6457C](/bulletins/11038136.md), 2026-10-05, Service bulletin: UNKNOWN OR OTHER. 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.
- [PIC6540K](/bulletins/11038132.md), 2026-10-05, Service bulletin: UNKNOWN OR OTHER. This Preliminary information communicates to dealers a procedure to reset the radio.
- [PIT6368E](/bulletins/11037797.md), 2026-10-02, Service bulletin: UNKNOWN OR OTHER. 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.
- [7.90](/bulletins/11037756.md), 2026-10-02, Over\-the\-air update: UNKNOWN OR OTHER. Great News\! Your vehicle keeps getting better. This update contains a required software change to help improve the overall software update and diagnostics process. 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.
- [PIT5698F](/bulletins/11037555.md), 2026-09-30, Service bulletin: UNKNOWN OR OTHER. This PI provides Diagnostics tips on how the LIN bus works and how to diagnosis it.
- [PIT6542A](/bulletins/11037259.md), 2026-09-10, Service bulletin: UNKNOWN OR OTHER. This preliminary information addresses a clunk noise in the front suspension traced to the control arm bushings.
- [PIP4902W](/bulletins/11037253.md), 2026-09-10, Service bulletin: UNKNOWN OR OTHER. This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
- [PIT6542](/bulletins/11037109.md), 2026-09-06, Service bulletin: UNKNOWN OR OTHER. This preliminary information addresses a clunk noise in the front suspension traced to the control arm bushings.
- [PIT6541](/bulletins/11036690.md), 2026-09-02, Service bulletin: UNKNOWN OR OTHER. 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
- [PIT6534](/bulletins/11036395.md), 2026-08-27, Service bulletin: UNKNOWN OR OTHER. Onstar connectivity features may be inoperative. Dealer is instructed how to reset the onstar module. Engineering is investigating a solution.
- [PIT6537](/bulletins/11036221.md), 2026-08-17, Service bulletin: UNKNOWN OR OTHER. This Preliminary Information describes steps needed to resolve a rattle or vibration from the door panel.
- [PIT6517C](/bulletins/11035710.md), 2026-08-05, Service bulletin: UNKNOWN OR OTHER. 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.
- [PIP6121](/bulletins/11033990.md), 2026-06-18, Service bulletin: UNKNOWN OR OTHER. This PI communicates a possible speedometer and/or odometer error due to an error in the parts catalog
- [PIP6031E](/bulletins/11033725.md), 2026-06-08, Service bulletin: UNKNOWN OR OTHER. This PI addresses leaks from the case half and provides repair direction to dealer technicians
- [PIP6032C](/bulletins/11033723.md), 2026-06-08, Service bulletin: UNKNOWN OR OTHER. PIP6032B provides diagnostic direction for dealers when encountering transmission leaks
- [PIP6033B](/bulletins/11033719.md), 2026-06-08, Service bulletin: UNKNOWN OR OTHER. This Preliminary information communicates to technicians to remove the pulley assembly and inspect the drive chain and pulley surfaces.

JSON: [/v1/vehicles/2027_gmc_terrain/bulletins](/v1/vehicles/2027_gmc_terrain/bulletins)

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