2022 GMC Terrain

While driving, I was getting ready to turn into the left lane then I noticed the brake pedal was hard as a rock so I immediately pulled over into a community. I knew it was safe I could barely stop the vehicle because the brake pedal was not giving at all, but eventually, I was able to stop I believe if the terrain wasn’t uphill, I wouldn’t have been able to stop my husband came and assisted with driving the vehicle to the dealership at a very low speed and hazard lights, which was about 20 miles away. This was very scary, but we made it since then the dealership has diagnosed it and it has something to do with brake assist power pump failure, which is documented in a class action lawsuit in Michigan with the same exact problem I’m in the process of getting it fixed down to the camshaft still waiting on final expenses, which I’m sure will be in the thousands we contact the GM to try to get some help with the repairs and they offer us a $350 to help out only if our all change record are acceptable not acknowledging the faulty mechanism power vacuum pump that created all of this

NHTSA ID

11774393

Incident

Oct 25, 2026

Baby is not comfortable in the seat and can’t seem to have a good head placement I think it’s because of the base and inserts.

NHTSA ID

11765554

Incident

Jul 15, 2026

My 2022 GMC Terrain lost power and stalled while I was driving, creating a safety risk because I could no longer maintain speed in traffic. The incident involved a police response and a safety-related tow costing $250. On XXX, OnStar recorded diagnostic trouble code P129F. Tire Choice subsequently replaced the fuel pump control component, identified in my records as GM part number 13554821, at a repair cost of $493.25. I have supporting diagnostic, repair, towing, and police documentation, along with evidence of the removed part. GM’s later vehicle history printout showed zero open field actions for my VIN [XXX]. I am concerned that this failure may be related to the fuel pump power control module condition described in GM campaign N252516900, although I have not confirmed that connection. I request that NHTSA investigate the loss of propulsion and whether the campaign’s coverage should include my vehicle. Tire Choice subsequently replaced the fuel pump control component, identified in my records as GM part number 13554821, at a repair cost of $493.25. I have supporting diagnostic, repair, towing, and police documentation, along with evidence of the removed part. GM’s later vehicle history printout showed zero open field actions for my VIN. I am concerned that this failure may be related to the fuel pump power control module condition described in GM campaign N252516900, although I have not confirmed that connection. I request that NHTSA investigate the loss of propulsion and whether the campaign’s coverage should include my vehicle. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11763875

Incident

Aug 19, 2026

The car just stopped accelerating and the check engine light came on. I took it to a shop and they had to replace the fuel pump control module. There is already recall for SOME 2022 GMC terrains but my vehicle is not included in the recall. I dont understand how a 2022 GMC terrain has a recall for the fuel pump module but my 2022 GMC terrain is not part of the recall already put out and I have the same exact issue as the other vehicles that had been recalled.

NHTSA ID

11763743

Incident

Sep 8, 2026

The vehicle experienced a complete loss of infotainment/audio functions immediately following a GM over-the-air software update. The OnStar indicator turned red, all vehicle audio including turn-signal sounds stopped functioning, and the rear backup camera stopped displaying an image. The backup camera failure creates a safety concern because it eliminates a federally required rear visibility safety feature. GM has advised me that software updates do not cause these problems and instead reveal an underlying issue. However, GM Preliminary Information bulletin PIT5971B identifies a software anomaly associated with loss of audio and a red OnStar LED on affected GMC Terrain vehicles, which closely matches two of my symptoms. I am concerned that a software-related defect may be causing or contributing to the simultaneous loss of multiple vehicle functions, including the backup camera. The loss of the backup camera is a significant safety concern because it prevents me from seeing the area directly behind the vehicle when reversing. The simultaneous loss of multiple functions occurred immediately after the GM software update and has persisted despite completing the recommended reset/troubleshooting procedures. GM is currently requiring me to pay for diagnosis despite the failure occurring immediately after the OTA update. I am requesting that NHTSA document and investigate this potential safety-related software defect. GMC Customer Service case 107120047

NHTSA ID

11761137

Incident

Jun 26, 2026

The car stalled while traveling down a road. We tried to restart and it would run for a few seconds and stall. We could not restart. There were no warning lights before the stall and after the engine would not run to get any other indicators that something was wrong. Had it towed to dealership, their diagnostic's showed it was a fuel pump driver module. Upon researching the issue, there is a recall for this problem but my VIN was not included in the recall.

NHTSA ID

11760068

Incident

Aug 22, 2026

My car wouldn’t start in my driveway.. onstar sent me an email with code P129F ( fuel pump driver control module) failed. I am thankful I wasn’t driving down the highway when it went out. My husband took it to Lexington Park Chevrolet Buick GMC dealership, where we bought the car and they replaced the part. My car only has 41,898 miles. My VIN #: [XXX] , a 2022 GMC Terrain Denali. I noticed online that other 2022 GMC Terrain has a recall on this part, but not my VIN #. I feel my vehicle should also be part of this recall. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11759454

Incident

Aug 17, 2026

My car stalled and did not want to start. It had to be towed to the nearest GMC dealership. my GMC dealer diagnosed a P129F fuel-pump control-module failure and replaced fuel-pump power control module part number 13554821. I was told that even though there was a recall for 2022 GMC Terrains for this part my VIN number was not included.

NHTSA ID

11759425

Incident

Aug 22, 2026

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, B3

• Improvements to OnStar functionality.

PI created to guide technicians through radio restriction process

This PI provides Diagnostics tips on how the LIN bus works and how to diagnosis it.

This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.

This Preliminary information communicates to dealer to perform a MEC reset for wireless projection issues