Table 1 shows three common lane departure related problems of the 2021 GMC Acadia.
| Problem Category | Number of Problems |
|---|---|
| Lane Departure problems | |
| Warning problems | |
| Assist problems |
The contact owns a 2021 GMC Acadia. The contact stated they had the remedy of a software update completed due to being included in NHTSA campaign number: 22v709000 (back over prevention) . After having the remedy completed the vehicle's lane departure assist system had failed and was no longer alarming the driver when the vehicle was drifting to other lanes. The vehicle was taken to the dealer, who completed the software update, who were unable to identify the cause of the failure. The vehicle had not been repaired. The manufacturer was made aware of the failure. The approximate failure mileage was 17,700.
Vehicle gives, “driver assist reduced drive with care” warning randomly. Lane change will no longer work and engine light will come on. Problem is sporadic and does not stay active. Engine light will shut off after a day. Once vehicle is shut off cooling fan runs extremely loud and for a long period of time draining battery.
Cars is not keeping track of temperature showing engine is cold after 30 minutes of driving, fan runs for extended periods of time after shutting off, check engine light comes on, steering assist alert comes in screen. All of this happens in a cycle. To stop it the battery has to be unplugged and reconnected resetting the car and everything goes back to being fine for a short period of time.