At around 82,000 miles car started to be hard to drive due to transmission failing to switch gears properly... now at 92,500 it's barely switching gears... I received error codes and check at dealership, they say it's not under warranty. I knew I am covered up to 100,000 mike's for drive train. Please help!

- Naples, FL, USA

I was driving normally and all of a sudden it started wanting to downshift from 5th or 6th gear to 2nd or 3rd gear when going up a tiny incline which normally wouldn't be cause for any downshift. I saw it was funky and a mile later, I lost all power and had a variety of check engine lights. I pulled over, cleared them and restarted the truck. It let me drive in first gear for a little while until I reached a stoplight and could not go anywhere. Towed the vehicle out of the intersection thanks to my friend and put it on a tow truck to the dealership. They said the transmission fluid pump failed and exploded, sending metal chunks all throughout my transmission. They said it would cost $4500 for a GM rebuilt 6L-80 as it was at 98K miles and was no longer under any warranties. I drive very cautiously and almost never allow RPM's to go above 2500, never shift from reverse or drive to any other gears unless fully stopped, and do most of my driving on the highway. So a month later and 4 grand later, my truck is running and driving again.

- Chetek, WI, USA

Tried to accelerate while entering the freeway, and experienced engine shudder/stutter. Took several seconds before vehicle responded and accelerated. Lots of shaking.

- Livermore, CA, USA

GM has known defect w/ 8L90 transmission systems failing. In July this vehicle was serviced by a GM dealer receiving full transmission flush and preventative maintenance. Ever since (now 60 days) the truck struggles to shift and lurches forward in low gear. Upon taking back to dealer this week, the lone option is a full replacement transmission, nearly $6K of estimated cost. Truck is less than five years old.

- Centreville, VA, USA

I started getting the famous transmission "shudder" and "shake" about a week ago and it is now constant at any speed, especially during acceleration. Shifts from 1st to 2nd and 2nd to 3rd are harsh. During acceleration, the transmission surges and feels like it's slipping or trying to shift when it shouldn't. even using cruise control at a constant speed, the surges still happen and there's a constant vibration through the steering wheel.

- Mount Pleasant, SC, USA

I have been dealing with transmission issues since I bought the vehicle. There is dirt and sand inside my brake lights, rust under the seats, dirt and rust under the dash, brake calipers are horribly rusted and painted to be covered up by the selling dealership, wiring issues continue to arise and repaired by my mechanic. Trailer brake system is now failing. Steering is having issues now, either bad tie rods or bad cv joints. I have had complete loss of electronic power steering in the past. I suspect this vehicle was in a flood and the dealership covered it up. I have been dealing with this since January of 2019, and I have text records starting April 7th 2019. The vehicle was purchased from a family member's dealership and I bought an extended warranty. They have been less than helpful. Seeking legal help is my last resort.

- Monroe, NC, USA

RPM increases between 4 and 5.5K but unable to acceleration after descension from hill while driving on I-17. It appears my transmission/gears slip following hill descents. On 6 occasions, while driving to and from moab, Utah on Aug 9-10, the engine revs up to 4.5 - 5.5K at the bottom of the hill/decline. I could not get out of the gear or pick up speed upon acceleration. Braking did not stop the revs. I just kept my foot off the brake and accelerator until the gear eventually kicked in. Otherwise the truck ride and drive is amazing and no other problem except getting annoying gear clunks now and then, every since I purchased it. Back in 2017 midway Chevy said that is not a problem. Well, I drove my truck for the first time yesterday since the incident. The problem reoccurred while descending a very small hill in anthem. This time span was much shorter. I want to mention that I have driven my truck up I-17 from anthem, AZ to flagstaff and beyond at least 20 times in the last 4 years and never experienced this. I do not have a floor mat or anything on the driver side floor of the truck. There are no signs of trans fluid leaking (on garage floor etc.), no way to check my trans fluid level. No messages showed up in the dic (driver info ctr), or on the dashboard instrument cluster (message center) (I.e.: transmission, speed, service brake assist, etc.), no diagnostic warning and the August monthly diagnostic report did not reflect any problems. I don't think any features were accidentally turned on while driving (I.e.: tow/haul, hdc, grade braking etc.). the problem continued after turning truck off and restarting, which should disengage most features. I am a 70 year old woman and haven;T driven the truck hard or never hauled anything. I am 2K miles out of warranty. Will never pay 53K for a vehicle with such a lousy drive-train warranty.

- Anthem, AZ, USA

I have a 2016 Chevy Silverado high country 6.2L engine 8 speed transmission 38,000 miles. Transmission either hesitates or shifts roughly when accelerating. Multiple times when this occurred making a turn it nearly caused an accident if it decided to hesitate shifting. GM has done nothing about this problem except give customer magical fluid fixes that don't last if they work at all, they are now on the third fluid including the original factory. They've been telling customers the transmission just has to re-learn shift patterns from day one. A friend of mine has one of these trucks as well and had one dealer tell him that's just how the truck works. If this is an acceptable mode of operation then why was the truck allowed on the road in the first place?

- Brownsville, TX, USA

Since purchased, truck shakes at about 70 mph. Original tires were mounted and balanced - still shakes. New set of tires were put in - still shakes at 70+mph. Happens on all types of highway surfaces. Ongoing issue.

- Laurens, SC, USA

My vehicle has the 6.2L V8 and the 8 speed transmission! the transmission was serviced for shuttering at various speeds, however still continues to shift very hard going up in gears but more so when down shifting. It seems as if it doesn't know which gear to go in. It lurches forward at times when coming to a stop as well! the dealership says this normal for that transmission however I disagree! my vehicle has 55000 miles on it!

- Indianapolis, IN, USA

This truck shakes horribly over 70 mph. After looking for solutions and seeing hundreds of complaints on the same issue I have nowhere to turn and no hope that a dealership will be able to diagnose or fix this issue.

- Auburndale, FL, USA

My truck was shaking and shuddering, along with hard upshift and downshift while driving. It started to make a loud noise when accelerating from a stop and would sputter when on the highway. I took it to the dealer and they diagnosed the truck would need a new transmission.

- Helotes, TX, USA

Dive line vibration, not from out of balance wheels. It occurs around 70 mph and lives in and out. The shake/vibration is always present but gets fluctuates at a continuous speed. Goes from a slight floor vibration to the entire center console shaking water out of its cup. Feels like the wheels are going to come off the back. It can be seen that the rear end is shaking left to right from the drivers mirror.

- Allegan, MI, USA

Upon leaving my residence and heading to work in the morning, the truck started sputtering and cutting out while driving through the intersection. The action impeded the traffic and the engine light cut on. After reviewing the fault code, it displayed a P0300 misfire code and P050D, commonly related to faulty fuel injectors. The truck had approximately 34000 miles when the issue started. Local Chevy dealer advised they are not covered under power train warranty and bumper to bumper has expired. The issue is now re occurring and the fuel injectors are on back order.

- Jacksonville, FL, USA

My truck shakes from the moment we pull off from a stop and shakes until we get up to 70mph. We had an alignment and that did not fix anything. GM is fully aware of the issue and has done nothing except put out a service bulletin for diagnostics that costs an arm and a leg! we cannot drive this vehicle because we are afraid we will lose control. This happens on paved and dirt roads and inside city limit streets (30 mph) and interstate roads (60mph+). we are also afraid to drive the truck fearing that it would get worse and the driveshaft might drop. $60K truck sitting in our driveway wasting away.

- Rose Hill, KS, USA

I bought this vehicle with about 20000 miles, right after I hit about 28000 I noticed that my second or third gear on my transmission started jerking. Is always doing it when is cold and always at the first start of the day. I also noticed when downshifting it makes a loud clonking sound. I took it to the dealer and they of course told me it was nothing. I do not tow anything heavy I only use my truck to go to work. Im pretty sure this is not normal. Unfortunately I haven't able to get it fix since repairs for transmissions are expensive and this vehicle is out of warranty.

- Warrenton, VA, USA

At approximately 32,000 miles, as I was entering the on ramp to the freeway, I lost forward drive. I coasted to a stop on the side of the road and tried several times unsuccessfully to resume forward motion or even reverse. The engine revved up but no movement. After getting the truck towed to my house, and then towed to the dealership the next day, the dealership spent 2 days diagnosing the transmission before determining that the transmission had to be removed for further investigation. After they removed the transmission, they discovered that the gears and clutch packs for gears 2 through 6 had blown apart. This is of course was absurd due to the age of the vehicle, the mileage and the fact that I've never towed anything with the truck or anything outside of normal everyday driving. Fortunately, it was still under warranty so the dealer proceeded to rebuild the transmission. Fast forward to 60,000 miles later and of course the transmission problems have returned. I began feeling an intense vibration through every gear and at all speeds, long, delayed and frequently violent shifts between 1st and 2nd, 3rd and 4th gears, and a strange, noisy idle. This went on for a day which, I then parked the truck and scheduled an appointment to return to the dealership to prevent further damage. The day of the appointment, after the vibrations, clunks and delayed shifts, I lost forward drive again, about a half mile from the dealership. I managed to get it back in drive after shutting off the ignition and cycling the shifter from park to drive, but this would only last through 2nd gear before losing drive again. I repeated this about 4 times which was enough to get the truck to the dealership and prevent having to wait an hour to be towed 1/4 mile. Unfortunately the truck is now outside of the 5 year 60,000 mi power train warranty. Expecting to receive a diagnostic report tomorrow.

- Stone Mountain, GA, USA

Shift jerking, down shifting and up shifting.

- Odessa, TX, USA

Constant excessive vibration issues when traveling over the speed of 45+

- Port Saint Lucie, FL, USA

Was driving and cruise control stopped working didn't throw any check engine lights or codes. Got appointment set up for them to look at it and less then a week later can't drive it due to the transmission is out. Only has 129K for miles

- Spirit Lake, IA, USA