The electrical system keeps throwing a code for short to ground as well as low voltage codes. The voltage gauge on the dash shows either over charging or under charging. The in dash radio and screen shut off and turns back on by itself while driving down the road. Occasionally while backing up or pulling forward the truck completely stalls. The transmission was subject to the shudder issue, we took it to King Cadillac in Lake City, SC for the transmission flush. After the flush we have not felt the shudder, but instead Occasionally when pulling off from a dead stop, or while crossing the very busy highway my house is on the truck looses momentum almost as if the transmission is failing to engage at all, and all of the sudden about 15 seconds later it engages and accelerates at a rapid rate. The steering is extremely loose in the tires, however the steering wheel engages after about 3/4 of an inch. I have taken it to said King Cadillac multiple times and they maintain that the steering is 100%. Although I can not let go of the steering wheel and continue straight for any length of time. I am constantly having to adjust the steering to match the pull of the vehicle to avoid changing lanes or running of the road. After 60mph the tire shake is horrible, after 70mph it is hard to keep the truck in its lane.

- Sumter, SC, USA

When trying to turn, the wheel will lock and jerk in the opposite direction, at the same time my dash will say service stabilitrack and my radio screen turns black and the air conditioner/heater turns off. The car looses all power and the ability to turn the wheel in any direction

- Albuquerque, NM, USA

Electronics flash on and off then steering wheel jerks hard back and forth. Total loss of everything.

- Okeene, OK, USA

Dash flashed Steering assist reduced while I was driving and then I lost all power steering nearly crashing the vehicle. Upon bringing vehicle to a stop I turned off vehicle exited and looked under hood for anything obvious. Upon restarting the vehicle warning was gone and power steering returned. I was advised by GM that a recall for this problem is available for previous year but not mine. I am afraid to drive vehicle, worried the problem will occur again.

- Sherman, CT, USA

When turning off the road to the right or left and then again left or ight in a parking lot, vehicle loses power steering and electronic functions, resulting in no ability to steer away for other objects or pedestrians. This is a major safety concern and i have stopped driving it since it started doing this. So basically any low speed turning from Right to Left or Left to Right i lose the ability to steer. When it happened at night at eh grocery store parking lot i noticed the interior lights flickered out and then back on also.

- Savannah, MO, USA

The Power Steering suddenly failed while I was driving at 50 mph in the highway The steering was so hard that I can barely moved, I have to figure out to not crash the side by side vehicles Not yet I will take my car to the mechanic tomorrow No there was not any symptoms before the failure

- Hialeah, FL, USA

When making turns left and right at low speeds power to the truck shuts off, the steering wheel jerks left or right and warning lights and beeps are activated. The vehicle will continue through momentum, but as you try to turn the steering wheel, the wheel will jerk violently rendering the turn dangerous. This also happens when backing up and turning. The vehicle has to placed in park, ignition shut off and turned back on to continue through the turn and drive. This issue is sporadic and unpredictable. I've avoided near accidents on 5 occasions. The same symptoms occurred during the 2015 GMC Power Steering recall. I've contacted a dealership but was told it could not be fixed without my VIN number being included in the recall.

- Fort Hood, TX, USA

1. Loss of Power Steering - Engine shuts down - Dashboard flickers (sometimes it turns back on) 2. Loss of Power Steering & Engine shuts off while in motion - EXTREMELY DANGEROUS (Usually happens at slower speeds when turning the steering wheel) 3. Dealer has not been able to confirm the problem 4. The dealer won't look at problems unless "it" happens in their hands because the diagnostic does not show this problem. 5. No warning before this happens. No way to force the problem to happen....it just happens usually when turning wheel at slow speeds. 6. THIS IS SO DANGEROUS.... 7. The 2015 Sierra has a recall for this problem, Mine is a 2016 8. PLEASE HELP - VERY DANGEROUS

- Dunkirk, MD, USA

The contact owns a 2016 GMC Sierra 1500. The contact stated while driving at 45 mph, the four-wheel drive service light illuminated on the instrument panel. As he proceeded driving down the highway, both the service stabilitrak and the no power steering, drive with caution messages appeared on the instrument panel. The contact started losing control of the steering wheel as the vehicle began to sway. The decreased engine power, drive with caution message was also displayed on the instrument panel as the contact cautiously drove the vehicle into a parking lot and restarted the vehicle without further incidence. The next day, the contact drove the vehicle to a dealer where an electrical reboot was performed and the vehicle was returned to the contact. After the vehicle was returned, the contact was driving 50 mph when the failure recurred. The contact continued driving to his destination. The contact returned the vehicle to the dealer where it remained in their possession. The manufacturer was notified of the failure and informed him that there were no recalls on the VIN. The vehicle was not yet repaired. The failure mileage was approximately 72,000. The VIN was unavailable.

- Poughkeepsie, NY, USA

Steering wheel jolts aggressively from the drivers hands. All electronics shutdown, engine shuts down, stabilitrak error & trailer brake on display. These conditions occur at any speed, going straight or turning. 25mph in city, driving 45 mph country roads or when stationary. Very dangerous!

- Medina, OH, USA

The contact owns a 2016 GMC Sierra 1500. The contact stated that the steering and suspension either locked up or was very loose while driving approximately 30 mph. Additionally, the steering either ceased or became loose. The contact contacted ed bozarth Chevrolet company, Inc. (2001 S havana St, Aurora, co 80247, (720) 773-5338) who stated that a software update needed to be performed on the vehicle. The vehicle had not been repaired. The manufacturer was made aware of the failure and referred the contact to NHTSA. The approximate failure mileage was 56,000.

- Aurora, CO, USA

The contact owns a 2016 GMC Sierra 1500. The contact stated that while reversing, the steering wheel seized with the check engine warning light and parking assist warning light illuminated. The contact stated that the vehicle needed to be shifted to park and restarted for the vehicle to operate as intended. The failure recurred multiple times. The dealer was not contacted. The vehicle was not repaired. The manufacturer was notified of the failure. The approximate failure mileage was 42,000.

- Savannah, GA, USA

[xxx] I was in the desert and the steering wheel stopped working, I was alone without water, under stress I called GM road assistance and emergency to help me and thanks to god they came after 6 hours. Redacted to protect personally identifiable information pursuant to the Freedom Of Information Act (FOIA), 5 U.S.C. 552(B)(6).

- Riyadh, NY, USA

While making turns the vehicle intermittently stalls, losing all control of steering and electrical components. When it stalls there is no steering control whatsoever and the vehicle does have brakes, but slow to react.. restart the vehicle and the computer system slowly resets. This has happened 5 times in the last2 days. Taking the vehicle to the dealership as soon as they have an opening.

- Crownsville, MD, USA

I bought this vehicle in July of 2019 from a GMC dealership in duncansville pa. In late November on my way to work randomly my service stabili trak, ABS, assisted steering, and brake light lit up on my dash every 30 seconds repetitively for the remainder of the trip (3 hours). I work 4 hours from home for 2 weeks at a time I spend very little time in my vehicle during this time. I seen the lights come up randomly while out of town also. Once my work weeks were over on my way home the problem persisted. I took it for an oil change and recall late December. They told me they could not replicate any lights nor were they showing any codes. As of last month the problem is getting worse to the point were I am completely losing my power steering sometimes for days at a time. Last week I took my vehicle down for another recall sent from GM specifically for my VIN I was told there wasn't any issues or codes. All they could find is a communications error and they would need to keep it for a few days and sent me on my way home until they had a loaner vehicle available. One week later after several attempts to get my truck in I still have a lit up dash, no power steering, and not a clue when it'll even be able to be looked at since I leave for work in 2 days. This is a common problem from what I have read and can be extremely dangerous especially in winter/snow/icy conditions. I need a vehicle that I can feel safe in that I can travel without worrying around every turn if my power steering is going to shut off and I'm going to have to power a vehicle around a turn or to avoid an accident. I feel like my problem is being brushed under the rug. On my way home that day just 2 miles from my house my power steering went out and I slid off the road fortunately I live in the country and nothing was in the field I slid into. I have photos and videos of the lights flashing off and on.

- Ebensburg, PA, USA

On 02/12/2020, I was turning turning to park in a parking spot at work when the radio and other electrical components shut down, and the steering wheel jerked in the opposite direction. I temporarily loss control of my own steering wheel. This occurred 3 times while trying to park. In addition, a message about stabilitrack appeared. It is well known that GM has recalled over 1,700,000 vehicles with this same power steering issue stating that owners will lose control of the steering wheel, increasing the risk of a crash. See NHTSA campaign number: 18V586. GM's own number for this recall is 18289. However, GM has only included certain vehicles in this recall, mainly 2014 and 2015. My 2016 GMC Sierra 1500 is currently not included in GM's recall even though the same power steering problem is occurring. According to a notice published with the nhtsc, the trucks may experience a temporary loss of electric power steering (eps) assist followed by a sudden return of eps assist. The issue, GM says, occurs typically during low-speed turning maneuvers. If eps assist is lost and suddenly returned, the driver could lose temporary control of the steering wheel, increasing the risk of a crash. GM says it first became aware of the issue in Feb. 2017 after receiving customer complaints related to loss of eps. Tests conducted between April and may found that some of the vehicles contained electrical issues that could cause loss of eps. The carmaker was to contact affected owners & dealers will perform a reflash of the eps module software. GM stated that newer vehicles contained recalibrated software and will not have this issue. GM is incorrect in it assessment since I have just experienced the same power steering issue in my 2016 Sierra, & now the dealer does not want to repair the issue since there is no GM recall on 2016S. There is definitely a problem with power steering on 2016S.

- Milton, FL, USA

The contact owns a 2016 GMC Sierra 1500. The contact stated that while driving at an undisclosed speed several gauges became inoperable. The driver information system illuminated a code and the power steering ceased. The contact stated that the failure recurred several times. The vehicle was taken to young Buick GMC dealer. (2010 E main St, owosso, mi 48867, (888) 399-4101) on eight occasions however, the technician was unable to provide a cause for the failures. In addition, the contact stated that while driving, the stability trac activated and pulled the vehicle to the right side of the road at 50 mph in inclement weather. An audible chime was heard before the power steering ceased. The brake also failed to operate as intended. The vehicle was taken back to the same dealer but was not diagnosed nor repaired. The manufacturer was made aware of the failure and provided a case number. The failure mileage was 80,000.

- Brant, MI, USA

I received a warning message on my digital dash display which indicated "service power steering" and my power steering stopped working completely. It was impossible to steer the vehicle and I had to have the vehicle towed for service. The vehicle was parked at the time the warning came on. The mechanic will be evaluating the vehicle in the morning.

- Bridgewater, MA, USA

The contact owns a 2016 GMC Sierra 1500. The contact stated that there was a slight clicking noise in the steering wheel when it was turned left to right. Expressway Chevrolet Buick GMC (4000 in-62, mt vernon, in 47620, (812) 307-9993) diagnosed that the steering rack failed and would cost $2,000 to repair. The manufacturer was not contacted. The failure mileage was 45,000. The consumer stated the battery was replaced and the clicking steering rack noise was no longer heard.

- Evansville, IN, USA

Power steering stopped working for 2 seconds while I was driving. I suddenly felt steering being heave and losing control and brakes was not working at the same time. Luckily I was going slowly around 20 mph in neighborhood. It could have been worst if I was in free way.

- Pflugerville, TX, USA