Power Train Problems of GMC Sierra - part 1

The contact owns a 2014 GMC Sierra. The contact stated that while making a right turn into the driveway, the steering wheel had become stiff. No warning light had illuminated. The vehicle was no longer being driven since the steering wheel was too stiff and required excessive force causing control to be lost while driving. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 105,000.

See all problems of the 2014 GMC Sierra 🔎.

The contact owns a 2015 GMC Sierra 1500 denali. The contact stated that while shifting the vehicle from park(p) to drive(d), the vehicle hesitated and then jerked into gear. The contact stated that the entire vehicle was shaking when it jerked into gear. The contact stated that the failure was also occurred while shifting the vehicle into reverse(r). Additionally, the failure occurred while slowing down for a traffic signal. The contact stated that the failure was a constant. The contact stated she had not noticed any warning lights during the failure. The contact had taken the vehicle to a local dealer who advised the contact that there were no open recalls for the transmission on the VIN. The vehicle was not diagnosed. The vehicle was not repaired. The manufacturer was not informed of the failure. The failure mileage was unknown.

See all problems of the 2015 GMC Sierra 🔎.

The contact owns a 2015 GMC Sierra. The contact stated that an abnormal, clunking sound would emit from the vehicle as the check engine light would appear on the instrument panel. The vehicle was taken to two dealer(quality Buick GMC, inc. -7901 lomas blvd ne, albuquerque, nm 87110 and pitre Buick GMC- 9737 eagle ranch rd NW, albuquerque, nm 87114) and both dealers informed him that the failure was related to the transmission and was given an estimate for the repair. The manufacturer had yet to be notified of the failure. The vehicle had yet to be repaired. The failure mileage was approximately 100,000.

The contact owns a 2014 GMC Sierra. The contact stated while his wife was driving at approximately 65 mph the vehicle began to vibrate and made loud grinding noises. The contact said the vehicle began to lose forward momentum. The contact's wife was able to exit the highway, however the vehicle transmission would slip out of gear. The contact stated no warning light was illuminated. The contact stated that the vehicle failure had become constant. The contact's wife had not taken the vehicle to a local dealer or independent mechanic. The vehicle had not been diagnosed or repaired. The manufacturer had not been informed of the failure. The failure mileage was 94,302.

The contact owns a 2014 GMC Sierra. The contact stated that the vehicle would not start. The contact stated he performed a diagnosis on the vehicle. He stated that the engine control module needed to be replaced. The vehicle was not repaired. The dealer and the manufacturer were both contacted, and they stated the vehicle was out of warranty. The failure mileage was 74,319.

The contact owns a 2019 GMC Sierra denali. The contact stated while parking the vehicle, the vehicle inadvertently stalled without warning. The contact attempted several times to restart the vehicle however, the vehicle would not restart. The contact attempted to jump start the vehicle and the failed to start. The vehicle was towed to the dealer where the starter was replaced; however, the failure persisted. The contact was informed that the engine needed to be replaced due to metal shavings in the engine. The vehicle was not repaired. The manufacturer was contacted and they offered to partially pay for the repair. The contact stated that he believed that the vehicle was not repaired correctly under NHTSA campaign number: 20v650000 (power train). The failure mileage was 91,000.

See all problems of the 2019 GMC Sierra 🔎.

The contact owns a 2017 GMC Sierra. The contact stated while driving approximately 45 mph, and slowing while exiting the highway, the vehicle began to lose forward momentum and lurch forward. The contact had not depressed the brake pedal, and had attempted to accelerate, however the vehicle rpm increased and the vehicle had continued to lose forward momentum. The contact stated no warning light was illuminated. The contact had taken the vehicle to a local dealer, where it was diagnosed and determined that there were no mechanical issues. The vehicle had not been repaired. The contact stated that the failure had become recurring. The manufacturer had not been informed of the failure. The failure mileage was approximately 69,000.

See all problems of the 2017 GMC Sierra 🔎.

The contact owns a 2017 GMC Sierra 1500. The contact stated while driving at 55 mph, the vehicle began to shift hard, started shuddering and lost electrical power. There was no warning light illuminated. The contact was able to push the vehicle to the side of the road with assistance. The contact was able to restart the vehicle. However, the vehicle was shifting hard and was shuddering while driving. The vehicle was taken to the local dealer where it was diagnosed that the main power cord had failed and needed to be replaced. The vehicle was repaired; however, the failure persisted. The vehicle was taken back to a second dealer, fresno Buick GMC (5515 n blackstone Ave, fresno, CA 93710), where it was diagnosed that the transmission torque converter and the engine mount needed to be replaced. Additionally, the dealer diagnosed that the coolant reservoir had failed. The vehicle was not repaired. The manufacturer was notified of the failure through email. The failure mileage was approximately 56,000.

Driving down the highway about 65mph it made a loud clunk and I took it in to service department and they told me I would have to pay about $400. 00 to drain the transmission fluid and replace it. I told them m pick up only has less than 15,000 miles on it I don't think this is fair, the service gu said the don't pay for it and other GMC denali customers had theirs done and problem was solved and I wasn't the only customer that had the issue and cory from alaska auto body said it was safe to drive.

See all problems of the 2018 GMC Sierra 🔎.

The vehicle does a hard shift from 1 to 2 second and has a shudder.

Apparently, the 8 speed automatic transmission has issues with wiring harness and hard shifting which the manufacturer has 18 service bulletins out on yet still will not recall and fix problems. Also the brake system is faulty and unsafe it loses pressure and even braking at various speeds. After taking it to the dealership they can not figure out why and say it is various parts and should be recalled but it is not as of yet. Gm knows of these issues and the 1000s of dollars customers have to pay for these repairs. This is wrong and needs to be rectified.

See all problems of the 2016 GMC Sierra 🔎.

When driving at highway speed or accelerating the back of the truck will violently vibrate. At time it is almost uncontrollable and becomes very hard to steer. I so I have researched this issue and it seems that there are many complaints about this exact issues with 2014 to 2019 chevy and GMC trucks. I just had the alignment done and brand new tires put on it the truck 6-22-20. Now the truck shakes even more then it did before.

Truck lurched uncontrolled for several feet when placed in reverse gear.

Electric/electronic/computer issues. Most issues are intermittent, some happen all the time. The intermittent ones sometime happen in clusters (multiple times a day then not for days, weeks, months) a few have only happened once so far. The following issues happen all the time. Does not come out of cruise control automatically during collision alert. Does not automatically brake during imminent collision with auto brake feature turned on. Secondary bluetooth phone does outgoing calls through trucks info system. Heads-up display gives double turn directions during route guidance nav. Bluetooth texting does not work. The following issues happen frequently. Transmission bangs/shudders periodically, accelerating, not accelerating, slowing down, just driving, mostly on level grade. Sometimes strong enough to feel like I was rear ended, passengers have jumped many radio media issues with sound and nav boot up. During parking maneuver after coming out of reverse and going into drive, forward camera would come on and then switch to nav screen when I took my foot off the brake. To resolve would go in reverse then back to drive and the front camera would stay on. After vehicle start I go into drive and front camera comes on. Sometimes it does not in the exact similar circumstances. No indication from forward detection sensors. After backing out of a parking spot, going into drive forward camera comes on then the whole screen goes bright blue, after a few seconds forward camera comes back on until I speed up. Other issues not so frequent. Have been to dealership over 9 times for a total of 37 days it was in the shop. GMC cac useless and do not know the product. Dealership technicians are not familiar with new product or have the computer skill set to fix.

There is a shuttering in the transmission as the vehicle attempts to climb slight/steep grades at slow to medium speeds. Around 1500 rpm the vibration is sent throughout the whole vehicle. Having to increase acceleration to allow the truck to shift properly to overcome the lack of power has created a dangerous situation while navigating up snowy/ice hills. The vehicle also performs a lurching or sudden speeding up when downshifting when slowing to come to a stop. Depending on road conditions this creates a dangerous situation when approaching icy/slippery intersections.

Vehicle shifts very hard/shutters from 1st gear to 2nd gear and low speeds and slow acceleration.

Vehicle has faulty transmission system that at shakes during use of the vehicle at all speeds. The vehicle also experiences "hard shifts" at low speed to the point that the vehicle rear tire "chirp" with such force that it feels like you've been hit from the rear by another vehicle.

Tl-the contact owns a 2017 GMC Sierra 1500. The contact stated that on several occasions the accelerator pedal was depressed however, the vehicle failed to respond. The contact stated that on one such occasion, the gear shift lever was placed in reverse, the accelerator pedal was depressed however, the rpm revved up without the vehicle responding. The vehicle was taken to greg lair Buick GMC, 16200 canyon dr, canyon, TX 79015, (806) 553-5706, on two separate occasions however, the transmission tech was not available to diagnose the vehicle. The vehicle was not repaired. The manufacturer was not contacted or notified of the failure. The approximate failure mileage was 33042. Ah.

The truck has a horrible vibration from around 45 mph and up. Have test drove other 2016 GMC Sierras with same issue. Have taken it back to the Dodge dealership we bought it from and they said it should be a recall.

We were driving up a slight incline in a parking garage when the engine started sputtering and shut off. After several attempts it started and we were able to make it to a parking space with the engine still sputtering. I received a notification from the truck, decreased engine power. The next day I brought it to be checked by the local GMC dealer. Their diagnosis is vapor lock when the fuel pump gets near or over 100 degree. Its my opinion that GMC placed a faulty part when manufacturing the vehicle. I would like this to be considered for recall.

Since December of 2017 the transmission, when cold, at approx. 25 mph and at 40-44 mph when neutral throttle is applied, bangs between gears forcing the operator to either accelerate or decelerate so the condition will cease. If there is no change by the operator, it feels as if the transmission will break the u-joints in the driveline or blowout the rear-end gears. I have made numerous attempts with GMC to remedy the issue to no avail. The vehicle has been in the dealership in excess of 40 days for the same problem with no resolution.

The contact owns a 2016 GMC Sierra. The contact stated that after starting the vehicle and shifting to drive (d) the vehicle was hesitating and then would lunge forward as she depressed the accelerator. The contact stated that the vehicle was also lunging when she was depressing the brake pedal as the vehicle was down shifting. The contact stated no warning light was illuminated. The contact had taken the vehicle to a local dealer, where it was diagnosed and determined that the transmission needed to be flushed. The vehicle was not repaired. The contact stated that the failure was reoccurring. The contact stated that the check engine light had recently illuminated. The manufacturer was informed of the failure. The failure mileage was approximately 165,000.

Vehicle shifts very hard in and out of 1st and 2nd gear. When starting to go at low speeds the vehicle almost stops when shifting and then jerks when it shifts. Same occurs when slowing to a stop. Vehicle was taken to the dealer and the power train was reprogrammed. The issue was a little better for a while. A few weeks later the same issue appeared again. Vehicle was taken back to the dealer in January 2020 and there is now a check engine code. Dealer plans to change 2 harnesses and change the fluid. Unfortunately the parts are on back order which kind of tells a story.

Truck lurches forward unexpectedly during slow stops such as when approaching a barrier to park, a gate, or pedestrian crossing. As the transmission downshifts, the torque increase causes the brake pressure being applied to become insufficient to stop the vehicle causing it to lurch forward up to six feet. During accelleration while highway driving the transmission may unexpectedly downshift to an inappropriate gear causing the engine rev limiter to engage and reducing power unexpectedly when it should be increasing.

Hard shifting between gears and coming to a stop.

"have taken my 2017 GMC Sierra into the dealership twice for transmission issues, the last time was a month ago. Both times I was told that there wasn't anything wrong but that the transmission software was �re-flashed� and that the transmission would have to �re-learn my driving habits�. My truck is still having problems. While upshifting from 1st to 2nd gear, the transmission sometimes hesitates before it engages and then causes the truck to lunge forward with a huge slam. While downshifting from 2nd to 1st gear, the transmission will make a very noticeable �clunk�. I'm about to take it back a 3rd time. This is extremely frustrating my bought my truck less than 2 years ago and it only has 25,000 miles. ".

Truck lags power when pressing the gas pedal at times after putting transmission into drive from reverse. Transmission shifts hard into and out of first gear and at times feels like it is skipping 2nd gear during a downshift.

When coming to a stop, applying a steady amount of brake pressure the transmission shifts and loses all forms of engine braking causing the truck to speed up and overshoots the stopsign.

Since I've owned this vehicle I have had transmission problems. Once it went from 70 to 20 on the highway. . It kicks or jerks at any speed. . . Especially going slow. . The shifting is horrible!!! the feeling of it losing power again like it did could cause serious damage to the transmission and unselfish and passengers. . I don't trust it on the highway!!! I keep a monitor connected to my truck at all times. . The dates coincide with the paperwork!! ongoing tranny issues all the time!! I paid way to much for this lemon!! engine vibrates around 80. . And if you don't use your blinker. . They truck fights you to change lanes. . It pulls you back!!.

Interior dash lights goes out and a few minutes later the engine cuts off while I'm trying to park. Each time while I was backing into my parking space. After sitting for about 30 seconds the lights dash board lights come back on, then I restart the truck. Sometimes while driving the dash board light blink of and on.

Tl- the contact owns a 2017 GMC Sierra 1500. The contact stated that the vehicle was at stand still at a traffic light, when the vehicle began to raddle. The contact stated no warning ling light was illuminated. The vehicle was taken to local dealer fresno Buick GMC located at 5515 n blackstone Ave, fresno, CA 93710, (559) 742-4113, where it was repaired for unknown diagnosed, but continued to experience the failure. The manufacturer has not been informed of failure. The failure mileage was 24,000. Dp.

Truck shifts really hard and is unpredictable. I almost drove through my garage door the other day shifting to drive from reverse. Truck will lunge forward or delay in shifting. There have been a few times I've had to slam on the brakes before I backed into something. I have brought it in 3-4 times for the issue and GMC won't remedy the problem.

Looses brake assistance in parking lot and sometimes on the highway,check engine light comes on with various codes the most common is misfire on startup it happen in different occasions.

Extremely hard shifts up-and-down in the 1st 2 gears followed by hesitation after stopping and starting.

Steering electrical assist fightback, driving,turning resulting in no steering-deadly! this can happen at any time while driving. Very dangerous! engine must be shut off and restarted before you can get out of street. Then message reads "lower driver window then raise" before proceeding.