2022 GMC Terrain: What to check before buying

The engine shuts off without warning, sometimes at 45 to 55 mph, and will not restart. Shops trace it to the fuel pump power control module, often logging code P129F. Some cars show a check engine or low battery warning. Others show nothing. The shifter can stick in park and the brake pedal can lock. Several modules fail twice, including after the recall repair, and some VINs are left out of recall 23V013000. Out-of-warranty fixes run several hundred dollars. After the recall, some fuel gauges read empty on a full tank, with a parts wait of 6 to 8 months.

Stalls and sudden loss of power hit at parking-lot and highway speeds, including 60 mph on a busy road, and the car often will not restart. Dealers and independent shops mostly blame the fuel pump module, and it sometimes fails again after replacement. Many reports cover recall 23V013000. Recall parts are unavailable for some cars, and several stall at only 3,600 to 7,000 miles while waiting. One report adds a gasoline smell in the cabin. Failures run as high as 76,670 miles.

Screens go dark while driving. The center display goes black, and the digital instrument cluster dies completely and needs replacement. The infotainment screen freezes at startup, the backup camera stays on after shifting to drive, and the screen and audio keep running after the car is locked, followed by hard starts. OnStar module failures come with nationwide backorders. One car loses the turn signal sound, collision warning, and OnStar at 22,000 miles. Separate reports describe misfires, power liftgate trouble, and reduced power with a burning smell.

In extreme cold the check engine light comes on and the car drops into reduced engine power, or limp mode, at highway speed. Owners report code P0299, and a dealer blames ice and condensation. One owner finds water pouring from the intercooler. Other reports describe the car shutting off at 60 mph with a service transmission warning and shifting into park, which makes steering hard. Others include a fuel pump power control module failure at 12,777 miles that leaves the shifter stuck, and white exhaust smoke with hesitation and jerking.

Most reports describe a stall that feels like running out of gas. The car loses power at a light or on the road, will not restart, and in some cases will not leave park. Some owners are told their VIN is not under recall. A smaller group reports full engine failure needing replacement, including a failed piston with broken rings at 60,300 miles. Other complaints mention code P0171 with hesitation and jerking, a fuel gauge reading empty on a full tank, and the car shifting or shutting off by itself.

During right turns at intersections, the wheel locks briefly as Service ESC and traction control warnings appear. The fault comes and goes. Dealers cannot reproduce it, and one dealer reprograms the computers and checks the brake module. In a separate report, the car shuts off several times with adaptive cruise control engaged, slowing from 76 to 34 mph in seconds while the steering stops working. Both patterns create a loss-of-control risk in traffic.