2017 GMC Acadia Limited steering problems

“We were receiving a message stating steering reduction. Turns out the thermostat sticks open and the electronic control module reset was a temporary fix. We had the thermostat replaced and the issue hasn’t happened again. Steering issues should be a safety issue and be considered for recall. Your thoughts please.”

“The contact owns a 2017 GMC Acadia. The contact stated while driving at an undisclosed speed, the power steering assist warning light illuminated. The contact stated that the warning light then turned off independently. In addition, the contact stated that the air conditioning failed to function as intended and the interior of the vehicle became extremely hot. The vehicle was taken to the dealer; however, the failure was not duplicated. The contact stated the vehicle was taken to the dealer in 2024 for the failure, and the contact was informed that the power steering assist feature had failed, and the software needed to be updated. The vehicle was repaired; however, the failure reoccurred. The manufacturer was made aware of the failure. The contact was advised to contact the NHTSA Hotline to report the failure. The contact was advised to take the vehicle to the dealer for a diagnostic test, and a case number would then be provided. The failure mileage was unknown.”

“The contact owns a 2017 GMC Acadia. The contact stated while driving at an undisclosed speed, the contact became aware that the steering wheel was inoperable, with the message “Steering Assist Reduced” displayed. The contact stated that the steering wheel was loosened and became difficult to turn. The vehicle was able to restart. The vehicle was taken to the dealer where it was diagnosed that the thermostat coolant sensor had failed and needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure and referred the contact to the NHTSA Hotline for assistance. The approximate failure mileage was 80,510.”

“Within a day of taking possession of the car, September 20, 2024, with odometer reading 76,352 , warning message in instrument cluster appears stating action required “steering assist is reduced, drive with care”. Following day, A/C stop working while driving. When park, I can hear radiator fan, running full speed (louder than normal). While driving at night, headlights are not bright, specially the high beam. On September 23, 2024, took it back to dealership I purchased the vehicle. They have the vehicle in the shop to fix the issues. Vehicle was ready for pick up September 27, 2024. September 29, 2024. Message in instrument cluster screen re-appear stating “Action required, steering assist reduced drive with care”; check engine light came on, remote start key not working, A/C stop working again, radiator fan running full speed and loud , Headlights are still not bright, Infotainment screen glitching, will not stay in home button and making clicking sound. Went back to dealership so that they can fix it. Diagnostic code : P0128. They were able to have A/C working when I left the shop. and no messages on the instrument cluster. Following day, I have all the…”

“I believe my vehicle has a software issue, the temperature gauge will read cold, I will get a “Steering assist reduced drive with caution” message, my A/C stops working, and the radiator fans come on full blast the moment you start the car because the temperature can not be read. I have read online forums where others are having this same exact issue. Resetting the codes seems to temporarily fix the issue, but it comes back within roughly 2 weeks. This vehicle has not even reached 60k miles yet.”

“Vehicle will randomly drop into a lower gear which causes the engine to rev up, then a warning light comes on indicating that the steering assist and ABS system are offline. Not what you want to have happen when driving 70MPH on the highway. Problem has been ongoing for ytears and GMC insists it is a transmission problem but another thing I have noticed whenever it happens is that the battery voltage increases. Seems like GMC shipped these cars with weak alternators which would explain the myriad electrical problems this vehicle and others like it have had.”