Vehicle Speed Control Problems of GMC Sierra 1500 - part 2

The vehicle would shudder when trying to accelerate. I almost was hit by a semi truck trying to merge onto the freeway. Made an appointment with the mechanic then a couple days later I was at a stop sign and the vehicle would not accelerate at all. I placed in park the tried shifting back into drive and still nothing. I had to turn the vehicle on and off twice before I was able to shift it in drive an it actully would accelerate. Even then it would shudder and not accelerate fully. Very dangerous. Just hit 100k miles. GMC certified mechanic said the transmission is shot and needs to be replaced. Cost to replace over $6,000. 00 bought the truck in 2020 for $35,500 and just paid it off.

See all problems of the 2017 GMC Sierra 1500 🔎.

The contact owns a 2015 GMC Sierra 1500. The contact stated while driving 75 mph, the accelerator pedal was depressed; however, the vehicle failed to accelerate as intended. Additionally, the contact stated that there was an abnormal squeaking sound coming from the vehicle. The vehicle was driven to the shoulder of the roadway. The contact stated that the failure reoccurred while hauling a trailer full of horses. The vehicle was towed to the contact's parent's residence. The vehicle was diagnosed by an independent mechanic and was diagnosed with a failed torque converter. The contact was informed that the torque converter needed to be replaced. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 129,000.

See all problems of the 2015 GMC Sierra 1500 🔎.

Back window frame crack led to water intrusion which flooded electric module controlling speedometer and adaptive settings. Extremely unsafe driving with faulty electrical components unknown to me. Insurance and dealership told me this is a common GMC occurrence. Cost is near $10,000 to make truck drivable.

See all problems of the 2020 GMC Sierra 1500 🔎.

Shuttering while in motion at a speed of 35mph or above. My 2020 GMC Sierra 1500 at4 carbonpro while driving at or above speeds of 35mph experiences a hesitation and severe shuttering while trying to maintain any speed of 35mph or above. The hesitation causes extreme vibrations and hesitation when lifting or applying foot to the accelerator. This happens in any drive mode also with cruise control on or off as well as shifting into low and being in any gear trying to prevent it. It also does this on any road and condition. It feels like a slip in the transmission or torque converter, possibly could be the rear end or variable valve timing as well. And when taking of from a red-light or stop sign it slips as if the truck has lost traction, but it hasn't. This is very dangerous and could be the cause of a serious accident when trying to accelerate. If your traveling at hwy speeds it feels as if the brakes are being applied and the tires are going over a washboard which could cause a collision, tire wear, or driveline damage.

The contact owns a 2024 GMC Sierra 1500. The contact stated that while coasting at speeds of approximately 1- 3 mph, and gently pressing the accelerator, the vehicle suddenly surged forward and accelerated quickly. The accelerator pedal was released, and the brake pedal was depressed, allowing the vehicle to come to a stop. The failure had occurred approximately 5 times within a year and a half. The vehicle was not taken to the dealer to be diagnosed or repaired. The manufacturer was not informed of the failure. The failure mileage was approximately 3,000.

See all problems of the 2024 GMC Sierra 1500 🔎.

2018 GMC seirra 1500 8 speed transmission. Making unsafe conditions while driving transmission tends to make hard shifts, jerks, hesitation when moved into gear, gets worse when stopping momentarily at stop lights and then trying to accelerate vehicle will not move. Makes hard shift and jerks then will accelerate in an unsafe manner.

See all problems of the 2018 GMC Sierra 1500 🔎.

Traveling at 70 mph on cruise control, tapped breaks to turn off, multiple warning lights flashed, vehicle lost power, and breaks with multiple messages including “break system failure, top speed 62 mph”. I lost all breaking control on the highway and nearly crashed into other vehicles due to inability to stop. Was able to pull over, turn off vehicle, and turn back on, when the breaks were working again but the vehicles acceleration was very slow. Currently at authorized repair shop. When dropped off, there were 8-9 active codes.

See all problems of the 2023 GMC Sierra 1500 🔎.

When I turn the steering wheel, the ac turns off, lights turn off, the computer screen turns off, steering wheel gets hard and does a jerking movement. The truck turns off too and then suddenly turns on. This can cause a death. If this happens in a highway or a street where speed is high this can easily cause a death. . Fortunately this has happened going at 30 mph and no one close at the time and also at a drive through fast food restaurant. It has not been confirmed by the dealer but I will soon have to take it. The only light that comes up is the stabilitrak. . But it only lights up when it happens and then it goes away.

The contact owns a 2023 GMC Sierra 1500. The contact stated while driving approximately 60 mph, the vehicle inadvertently decelerated to approximately 30 mph and went into limp mode. The check engine warning light, the service power steering warning light, the service transmission warning light, the low tire pressure warning light, and the traction control warning light were illuminated. The contact stated that a message was displayed on the instrument panel to “service 4-wd and “reduce acceleration - drive with care. The contact stated that the climate control system increased to 76 degrees. The vehicle was taken to the dealer where it produced codes: p00ff, p1789, p25a2, u0073, u0402, u0418, u1610, u1643; however, the failure could not be duplicated. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 5,000.

Over the last 3 years we have had ongoing issues with our truck going into limp mode. We have spent thousands of dollars at dealerships and mechanics trying to troubleshoot the issue. Several occasions while trying to merge onto the freeway the truck would slip into limp mode causing us to have other drivers slam on their breaks almost hitting us. We had 2 cars in January of 2023 veer off the side of the road. We pulled over and thankfully they missed hitting one another. We just couldn't speed up to get out of their way. We cant believe their hasnt been a safety recall on the tcm for these trucks. GMC started doing service bulletins in 2013 about the tcm causing the limp mode issues. There are dedicated facebook groups with over a 1,000 followers who are experiencing the same issues with these tcm's. Someone is going to die if they havent already. Several collisions, involving the years affected, are being re-investigated to determine why the vehicle slowed abruptly causing a fatal accident. A class action lawsuit is gaining momentum because gm will not do anything about the tcm.

See all problems of the 2010 GMC Sierra 1500 🔎.

I was stopped at a red light and when the light turned green I accelerated and the vehicle shut off and then came back on. When the vehicle came on I had a service esc light and a system break failure warning telling me not to exceed 62mph. I made it back to my house driving with extreme caution. The breaks were very delayed while driving.

Dashboard instrument panel all lights and gauges goes out while driving down the road when vehicle is turned off a clicking noise is made in the dash. This issue causes when driving down the road, not knowing the speed because the speedometer is out or how much gas the vehicle has, or any other readings, and at night all lights go out, not able to see while driving down the road.

See all problems of the 2009 GMC Sierra 1500 🔎.

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!!.

See all problems of the 2016 GMC Sierra 1500 🔎.

Sensor temperature transmission.

The speed of the truck will not increase. The rpms goes really high and the truck will not move into the next gear. The rear end of truck vibrates. I took this to the dealer and was told it is the transmission fluid is faulty. The check engine light does come on. I did not have the new transmission fluid changed because dealer said is cost $300 for the fluid and $100 for the labor and $168 for the diagnostics. So I still have the same problem. Also told you can not purchase this transmission fluid no where but GMC.

The truck stated to have the check engine light on, by the time that happened the brakes were hard to step on it and the steering wheel hard to turn, I had been asking to GMC superior of siloam springs to check the truck because, got scared while I couldn't make stop the truck while on traffic, but they don't had open appointments for that day or the other following days, so a week after they got one and I missed because my work, I set another one at GMC on springdale but they want me to charge me whenever the truck has an extended warranty, so I told them to leave it like that so finally got another appointment at siloam springs location but while driving down there the same thing happened all the light on warning messages on the dash board start showing up and the brakes were hard to step on it and the steering wheel hard to turn, I got told them what was happening, about and how exactly happened. That day after 30 minutes I got a call saying that it was fixed I still asked if they were sure he said yes, the next day I almost crashed with a neighbor at my work place because I couldn't stop the truck, so today I took back the truck and the guy at the desk told me that they may just erase the codes and don't really checked what was wrong, I'm just filling this report because even if I got full coverage on that truck, I'm not gonna be responsible if I'm involved in an accident.

When I slow down to make a turn, my truck loses power making the turn very dangerous. I lose control of the vehicle for a few seconds due to loss of power. It is very dangerous for me to make turns.

See all problems of the 2014 GMC Sierra 1500 🔎.

Service trailer brake system, service esc, steering assist is reduced, brake system failure. Almost had an accident because of the brake system failure.

See all problems of the 2022 GMC Sierra 1500 🔎.

Everything is horrible in the truck.

It turned off while driving on freeway I immediately put on n and start back up. It also pulls back as I’m driving normal 35mph. My rpm gaug goes up to 3 while driving down hill and locks.

The truck displayed warning lights for abs, traction control, trailer brakes, and front park assist. Additionally speed control (cruise) did not function. This presented a safety issue. I took to dealer ASAP. They repaired by replacing left rear wheel speed sensor. Cost about $216. Appears to work correctly at this time.

I investigated and unintended acceleration crash that occurred on 8-9-2021. The vehicle had just left a body shop where it had repairs to the left front of the vehicle near the ecm. The driver reported the vehicle would not slow down. He face timed a witness and showed her his foot was on the brake and not the accelerator pedal collaborating his statement. The 2020 GMC accelerated to 93 miles per hour crashing into the back of a Cadillac escalade. Upon impact the fuel tank of the Cadillac exploded igniting both vehicles on fire and burning a fed-x truck that was folded in half from the sever impact. The edr report stated the brakes were applied fully for a full 5 seconds prior to the crash while the vehicle was still accelerating. The accelerator was reading a constant 57% during the lead up to the crash and the brake rotors showed heat related glazing from excessive braking. The engine torque was also at 1023nm leading up to impact collaborating unintended acceleration further. Based on the evidence gathered my opinion is there was a short in the components in the left front of the vehicle most likely the ecm harness that caused the crash. It is unknown if the damage was caused by the previous crash, the body repairs or a manufacture defect at this time. The radiator had also just been replaced so moisture could have contributed to the malfunction. If moisture shorts app-1 to app-2 the safety systems can fail to detect a single fault because it causes redundant faults.

Transmission control module since the summer of 2020 the vehicle has at least half a dozen times, without warning, experienced the following symptoms (most recently July 27, 2021 when I captured it on video). 1. Power door locks begin cycling open and closed 2. Intermittent chime operation 3. Transmission locks into a single gear and won't shift or will shift harshly 4. Gauges fluctuate 5. Traction control and stabilitrak turn off 6. Service traction control and service stabilitrak messages appear 7. Transmission position indicator disappears.

Transmission jerks, slams, forces a feeling of being rear-ended, delayed acceleration with sudden engagement causing uncontrolled acceleration. I've had it looked at every time I've taken it into the dealership for regular maintenance. They haven't been able to reproduce it as it only happens once, first time after not driving it for a while. No warning lamps or messages ever appear.

See all problems of the 2019 GMC Sierra 1500 🔎.

Vehicle suddenly went into reduced engine power while driving in heavy traffic. Vehicle immediately began to slow down and although there was some throttle response it was difficult to maneuver through traffic to get to the side of the road. This event happened around the 31,000 mile mark. The reduced engine power message came on, but I do not remember hearing an audible alert. Being a 40 year automotive technician for gm, I am familiar with pulling codes and replacing parts. I called the dealership to see if this was covered by warranty and was told no. After pulling the codes, I personally replaced the throttle body sensor and the accelerator pedal assembly, but the vehicle continued to go into reduced engine power mode. I took the vehicle into the dealership and they diagnosed the cause as a corroded connector. The connector was replaced and the vehicle was returned to me. After a little over one month and less than 1,000 miles the vehicle is once again going into reduced engine power mode. I can have my vehicle available for inspection if necessary.

1st time engine check light came on had brake control updated. 2nd did auto start and after that truck will not start. After 3 hours can start the truck but brake control traction control abs were off. Engine has reduce power. Dealer updated the truck and check battery. 3rd time truck will not power on. After jump starting the truck it pops up all of previous message. And running board keep popping in and out and truck will still drain power ebven when off.

Issue 1: front left sensor(s), after a rain, car wash and now after an oil change, continuously vibrates the drivers seat and the red light warning stays lite indicating that an obstacle is located near the left front of the truck. This has happened on several occasions and after a time both indicator stop. Issue 2: when traveling on a freeway, twice now, the cruise control suddenly disengaged or decreased mileage, as if it had detected a vehicle in front of us. There was no vehicle within a quarter mile of us front or back, nor any vehicles on the side. No debris in the road either. Usually when the adaptive cruise is set and detects something in front the icons on the dash turn orange and starts to flash. That didn't happen, rather the cruise icon changed to blue in color and the truck slowed. This I would consider a safety risk. Both instances (December 2020 and April 2021) have been reported to a dealership and noted in a file. When the customer care person attempted to get malfunction codes, nothing appeared to be wrong with the vehicle.

I was driving down the road and all of the sudden it was if my transmission disengaged and my car lost power. It then automatically came back on and the �service stabilitrak� lights came on. I nearly avoided an accident and was able to pull off onto the side of the road.

When stationary I pushed in on the gas throttle to go it didn't go so I pushed in a little more and it accelerated to fast then like it jumps. It also is shaking at certain speeds.

Faulty tire pressure management system. Looking for recalls or service bulletins.

See all problems of the 2012 GMC Sierra 1500 🔎.

I own a 2019 GMC sierra denali 1500 crew cab. After starting my vehicle and beginning my journey home. Sever warning indications of problems came on my dashboard system. While driving, the brake failure indicator illuminated and the vehicle would not immediately stop when depressing the brake pedal. Also, several warning indicators illuminated, including the power steering, service esc, brake system failure 62 mph top speed, steering assist is reduced drive with care, service trailer brake system, abs, and trailer towing warning message indicating that the vehicle would not accelerate above 62 mph. In addition, the steering wheel became extremely difficult to turn in either direction.

Lost of acceleration at a set speed the throtal stopped to increase the speed and just flooped to floor. When the speed slowed to a set point, acceleration control returned. When it hit the high setting it again lost control to increase speed. This happened every time I reached the drop off speed. Why dose this happen??? one time I was on a highway passing two trucks on a upgrade when this happened the #2 truck went to pass #1, the #2 truck was on my rear thank god acceleration returned. I reported this occurance to manufacture & to "NHTSA" over a year ago. I got "no" answers or responce from anyone!!!.

Transmission shifts hard and seemingly late and early (sometimes to the extent where it feels like someone is slamming into the vehicle). This has happened since purchase in 2019 ( when I told them about it them about it they tried to tell me it was normal and acted like I was a fool), continues to get worse especially in stop and go traffic at lower speeds, but does it at all different speeds.

Transmission has failed from 4th gear up (3) times within 91,000 miles. When going at speeds more than 50 miles an hour, the transmission will break and lose forward motion causing a safety issue with oncoming traffic. The transmission was "rebuilt" at lafontaine GMC of highland, mi (2) times and they are telling me they are going to "rebuild" it a 3rd time. Just wanted to note safety issue so when this happens in the future I will have a legal avenue.

Truck shift into gear very roughly. Shakes when driving through all speeds. Feels as if something is falling off the truck.