The vehicle has been in the dealership from where it was bought numerous of times for the same problem. Transmission shifts very hard from one to two and Has lots of slippage. Dealer recommended a transmission flush and it did not fix the problem. They would keep telling me that the transmission is normal for slipping and slamming hard while changing gears. I-??ve been to multiple shops and nobody seems to know how to give me a correct answer or guide me on how to fix my problem.

- Manville, IL, USA

The contact owns a 2016 GMC Sierra 1500. The contact stated while driving at an undisclosed speed, the vehicle stopped moving very slowly and came to a complete stop. The check engine warning light was illuminated. The vehicle was towed to a dealer to be diagnosed. The contact was informed that the transmission needed to be replaced. The vehicle was not repaired. The contact stated that the vehicle was previously repaired under warranty twice. The manufacturer was made aware of the failure but confirmed that the vehicle was no longer under warranty. The failure mileage was approximately 130,000.

- North Kingstown, RI, USA

The contact owns a 2016 GMC Sierra 1500. The contact stated that while driving at an undisclosed speed, the check engine warning light illuminated. Additionally, the transmission started shifting improperly. The vehicle was taken to an independent mechanic where it was diagnosed with a failed transmission fluid control sensor. The contact was informed that due to the transmission fluid sensor failure, the torque converter control module needed to be replaced. The contact stated that the vehicle was taken to several different independent mechanics and the diagnosis was confirmed. The vehicle was not repaired. The contact provided the DTC codes: P0711 and P0700. The contact researched and discovered a previous repair coverage with a similar failure description. The coverage program code was N192291660. The manufacturer was made aware of the failure; however, the contact was informed that there were no unrepaired recalls or coverage for the failure. The failure mileage was approximately 86,624.

- Mckinney, TX, USA

My truck only has 40,000 miles on it and has the 8 speed 8L90 transmission. The truck bucks hard and has majorly delayed acceleration, especially on the initial startup of the vehicle. At this point the torque converter is going bad as well as the transmission fluid temperature sensor as per my mechanic when hooked up to the computer. It is now causing a fluttering of the RPMs, especially when the vehicle heats up after running for several minutes. It is severely impacting my fuel economy as well as my general safety when operation my truck. This is a known problem with this type of transmission but so far there has been no recall issued, only a class action lawsuit that I am having a hard time joining. It is going to cost me over $8000 for a new transmission and I don't really know where to turn at this point or what to do! Please make GM issue a recall for this known transmission problem that they put in millions of vehicles, all having similar problems as my own! Thank you!

- Mount Pleasant , MI, USA

Transmission shakes constantly not just when shifting. Repair shop says this is not repairable and is a common issue in trucks like mine. 2016 GMC Sierra. Vibrations are significant enough to cause a safety issue. Getting worse with time.

- Springfield, TN, USA

The transmission overheated due to a poorly manufactured torque converter which caused my truck to come to a sudden stop on the interstate nearly being struck by several semi tractor trailers leaving my family and I in a dangerous situation. Upon research the torque converter and the thermal bypass valve fail causing the transmission to overheat with no warning whatsoever. It massively blew smoke out of the tailpipe blocking all lanes of traffic, completely unable to see that I'm broke down and nearly caused several accidents. Police was not notified since no accident occurred. The transmission preformed as its supposed to. No hard shifts or slipping between gears. This needs to be addressed by the NHTSA and GM as it's a huge safety issue. With no warning light indicating the transmission is reaching critical heat levels and shutting down poses a risk in the event you're towing a trailer/camper (As I was). Or even worse happening to those who live where they drive up and down steep mountain grades.

- Iowa City, IA, USA

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

Transmission problems. Had to replace at 95,000 miles. Seeing problems online with same GM pickups with less miles and transmissions going out. General Motors has a problem and not addressing it.

- Decatur, TX, USA

Check engine light on 2016 GMC Sierra, PO710 and PO711, took to local mechanic and notified me there is a service bulletin related to issue but VIN# shows no recall, below is the service bulletin found online. PIP5700 8L45 8L90 Internal Wiring Harness I

- Bellingham, MA, USA

Torque Converter failed and destroyed the transmission at 79,600 miles

- Kendall Park, NJ, USA

The transmission is almost banging into gear vibrating at high speeds the shifts can jerk the vehicle and cause an accident

- Ozone Park, NY, USA

When in park and I shift the transmission into Reverse, the force engaging the gear bangs and shakes the vehicle. The transmission is not regulating the power. The vehicle is available for inspection. I took the vehicle in to the dealer service and they were able to reproduce it. They claim that there is a bulletin from GM motors and this is considered normal. The bang is hard and shakes the vehicle, definitely not normal. It started after 50k miles and the truck has 62k miles now. No one else inspected the vehicle and no warnings are indicated by the vehicle.

- Chandler, AZ, USA

The torque converter jerks the truck and causes vibration. This does jerk the vehicle unsafely at times of stop lights. As I know this was a lawsuit at one point with GMC itself. It does nothing but get worse with pulling and jumping the truck going down the road.

- Cedartown , GA, USA

Transmission changes hard when it shifts to another gear when I purchase the truck new I contact GMC they said that it was design to shift like that everyone that I know has a Sierra 1500 complains about how hard their truck shifts I have relatives and friends complains also. When it was under waranty they told me that the wrong tramsmission fluid was put in it from the factory ? my truck brand new.

- North Litle Rock, AR, USA

I drove up to a yield sign, when on coming traffic was clear I step on the gas then I heard my engine knocking I tried to go but I only could get up to 30 mph I took it to the dealership they diagnose it and said that the number 7 cylinder had misfired I had a manchanic to repair it and it cost me $4200.

- North Litle Rock, AR, USA

Torque converter and pump assembly failed at 66k miles 2016 GMC Sierra. Currently being repaired by the dealership. They first quoted me $4200 to replace but was able to talk them down to $3100.

- Marlton, NJ, USA

At low/idle speeds the brake pedal becomes hard and will not stop. At speeds between 35-75mph the engine/transmission has a vibration about every 10seconds and the transmission shifts hard and/or rough at times when first taking off.

- West Monroe , LA, USA

Took my truck to gmc dealership to get brakes and transmission fluids flushed, then a few months later I noticed that my truck started shifting hard. then one day going back home from work I lost 6th and 5th gear, would not go into either one. then I lost all gears and would just red line when I pressed the gas. had to coast into a parking lot to get a tow truck and carry it to a transmission shop. the shop said that the universal clutch was burned up and would now cost me $5,000 to fix.

- Alexandria , LA, USA

Just purchased this used vehicle in December 2022 with high miles (202000) with a dealers extended warranty. Problem has happened twice in 2 weeks. While backing up slowly and turning my wheel the vehicle stalled and Service Stabilitrak came across the dash as it died. Then upon restarting it told me to roll drivers window down and up and the memory seat function cleared as did my clock. Like it had a battery replacement and reset to factory. Took into a GMC service shop where they found code P0700 and P0711. They were able to replicate my concern. Telling me to replace the transmission harnesses and that it is not covered under my extended warranty for powertrain. Going to cost me $1500 in repairs. After extensive research I see this is a common problem yet no recall has been issued for my 2016 GMC Sierra crew cab. Very frustrating!!

- Gillette, WY, USA

Was in a parking lot, moving just 2mph and had to literally mash down on the brake pedal - both forward and backward. Also, I put my truck in drive and has been making a noise in the transmission it seems and is a loud + lurches forward a bit. Additionally, I was traveling on vacation to Rockport, TX. I've made a appointment with the dealership here at 10:00 A.M. on 9 Dec 22, it's the earliest I can get my truck in. There was previously a brake issue covered under warranty & should be again!

- Deepwater, MO, USA