2022 GMC Terrain problems

“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…”

“The contact owns a 2022 GMC Terrain. The contact stated that while driving 40 MPH, the vehicle lost automotive power. No warning light was illuminated. The vehicle was pulled over to the side of the road. The “Low Fuel” message was displayed on the instrument panel. The contact stated that the vehicle failed to restart. The vehicle was towed to a local dealer where it was diagnosed and determined that the fuel pump was inoperable and needed to be replaced. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 51,000.”

“The contact owns a 2022 GMC Terrain. The contact stated that while his wife was driving 35 MPH, the contact received an email and text from OnStar with DTC: P129F, and the message to not drive the vehicle was displayed. The check engine warning light was illuminated. The vehicle was taken to the local dealer, where it was diagnosed and determined that the fuel pump power control module had failed. The vehicle was repaired, but the failure reoccurred. The contact stated that the failure was related to N252516900, a General Motors (GM) emission recall related to the Fuel Pump Power Control Module (FPCM and GM safety recall N222372310 – Inadequate Fuel Pump Flow. The local dealer was contacted, who stated that the fuel pump had failed to meet higher outputs. The manufacturer was contacted and confirmed that there was no coverage on the vehicle. The failure mileage was approximately 66,000.”

“The contact owns a 2022 GMC Terrain. The contact stated that while driving 45 MPH, the vehicle began to shake independently. No warning light illuminated. The vehicle was taken to the dealer where it was diagnosed that the front drive axel needed to be replaced. The contact was relating the failure to Technical Service Bulletin: 20-NA-227 (wobble or vibration during hard acceleration); however, the VIN was not included in the bulletin. The manufacturer was notified of the failure, and they informed the contact there was no recall for the failure. The failure mileage was 64,000.”

“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…”

“Read • 9:59 PM I am formally requesting a VIN eligibility review under GM Customer Assistance Case #XXX. Vehicle: 2022 GMC Terrain VIN: [XXX] DTC: P129F Recall: N252516900 – Fuel Pump Power Control Module I was advised that my VIN is “not included” in the recall. I am requesting that GM reconsider and formally document the basis for that determination. GM’s XXX revision of N252516900-01 states that the phased launch was complete and that all VINs had been placed in an Open status in GM’s Investigate Vehicle History (IVH) system. The bulletin specifically identifies the 2022 GMC Terrain as an affected model. Additionally, GM previously issued engineering information specifically concerning 2022 GMC Terrain vehicles experiencing DTC P129F, including situations involving failure to start and/or stalling. Because my vehicle experienced P129F, I am requesting: A formal VIN eligibility review for N252516900. Confirmation of what GM’s IVH system shows for VIN [XXX]. A written explanation of why my VIN is excluded if GM determines it is not eligible. Documentation of my P129F failure under Case #XXX. Review of whether my vehicle’s failure is consistent with the…”