8 speed transmission shift very rough from 1-2 and 2-1 gears, frequently hesitates, makes clunking sound. Have taken it to GM dealer and am informed that yes, that's the way the 8 speeds are. This is a $50K + truck. This transmission issue causes and can cause hesitation when needing to accelerate, thus creating a safety hazard.

- Edmond, OK, USA

In June of 2017, I bought a new Chevrolet Silverado. It runs great no problems. In November 2017 I called to make an appointment to have the oil changed. The service department told me that there is a recall on the chuggle drive quality. The service did what was needed to be done. I had to make a 5-hour trip up North when I noticed that my truck wasn't running like it was before the recall was done. I noticed that the transmission was shifting hard. When the cylinder deactivation went to 4 cylinders the engine lugs. Before the recall was done I couldn't tell when the cylinder activation was switching to 4 cylinders back to 8 cylinders it ran very smoothly no lugging of the engine. What concerns me now is when I was driving an went to make a left turn at slow speed the transmission downshifted hard where the back wheels locked up. Went through a drive through after I placed the order proceeded to the window my truck lunged forward from first gear to second gear. I am glad that no one was in front of me. I have taken it to the service department at the dealership several times. Was told nothing was wrong no codes came up. Even called GM got nowhere with them. The chuggle drive is a reprogramming of the transmission control module. GM trying to fix one problem created another problem. I pull a 5000-pound camper with this truck with the issues I am having now with the transmission shifting hard and engine lugging I am afraid it might cause me to have an accident. My truck ran perfectly before the chuggle drive quality recall was done. The recall has to be the problem. It's not a good fix.

- Rocky Gap, VA, USA

Transmission shifts hard and vehicle surges at low speed with accompaning "clunk". problem occurs in both upshift and down shift. Dealer informs me that is a "learning" curve for vehicle to understand my driving habits. However I see on several automotive forums that this has been an issue for some time and has yet to be resolved.

- Suwanee, GA, USA

The contact owns a 2017 Chevrolet Silverado 1500. While driving 25 mph, the vehicle shifted hard from first to second gear. The failure occurred everyday since the vehicle was purchased in April of 2017. The vehicle was taken to O'reilly Chevrolet (6160 E broadway blvd, tucson, AZ 85711) where it was diagnosed that the transmission control module failed. The dealer reprogrammed the transmission, which failed to remedy the failure. The vehicle was brought back to the dealer and the valve body for the transmission was replaced and the transmission fluid was changed. The failure recurred. The manufacturer was notified of the failures. The failure mileage was 16,000.

- Iron Mountain, MI, USA

Noticed after purchase that there is vibration like a bad tire 35-42 mph. Vibration felt in seat, console and steering wheel 58-65 mph. Transmission down shifts hard sometimes feels like being bumped from behind, it also hesitates and jerks after letting off the accelerator and accelerating again between 25-45 mph. When accelerating it surges, jerks and stumbles. Sometimes when accelerating the transmission downshifts and hangs in that gear until you let off the accelerator. Under heavy acceleration there is vibration in the power train and the transmission seem noisy. At 25 mph it shutters like the transmission is in to high of a gear under light acceleration. Returned to waldorf Chevrolet where I purchased it and was told they balanced 2 tires and reset the road force, scanned transmission no codes transmission ok after shop foreman road tested for 21 miles no other repairs needed. Picked it up driving home noticed all the problems were still there and after inspection of my wheels noticed that the wheels were balanced still had the old weights still on the wheels with new weights also. Made another appointment this time to have shop foreman (rick) ride with me to show him what it was doing which we did and left my truck again. After 8 days I am told it was ready I was told they did a pico scope test and the driveshaft was being replaced then only tested it was ok. Checked run out on flanges all within specs. Found the right rear tire bad. They put steel wheel from another truck on and road tested with no change. They drove another truck and it rides the same. Even has the shutters on hard acceleration. Said they called GM tac back and they don't see a problem with this. Written documents be sent via mail. Made another appointment

- Temple Hills, MD, USA

Transmission on my new 2016 Z71 lt 4X4 jumps into low gear when slowing down. I took it to the dealership multiple times, but keep getting told it shifts fine. I took it again and had a manager drive the truck with me inside and agreed the transmission was not gettin into gear in a normal way. Toon it back to get it fixed and was told transmission is fine. I need this fixed or I will be returning he truck as a lemon title.

- Kerman, CA, USA

Possible piston malfunction

- Big Spring, TX, USA

When coming to a stop hearing a clunk in the drive train had same issue with 2016 Silverado Chevrolet replaced control module and calibrated gears on 2016 but when I told them about the same issue with the 2017 I was told this is normal so why would they waste time and money trying to repair an issue in their words is not an issue is beyond me, this needs to be recall item befroe mechanical failures resut in injuries or loss of lives.

- La Porte, TX, USA

The contact owns a 2017 Chevrolet Silverado. While the vehicle was parked on a sloped driveway without the emergency brake engaged, it rolled out of the driveway. The contact found the vehicle in the middle of the street still locked and engaged in park. The contact parked the vehicle back in the driveway with the parking brake engaged. The vehicle was not taken to an independent mechanic or dealer. The manufacturer was not notified. The contact read online that this was a common failure with 4X4 vehicles as the transmission transfer cause would inadvertently shift to neutral when parked without the emergency brake engaged. The failure mileage was 31,000. Updated 10/25/17 updated 10/26/2017

- Brea, CA, USA

The contact owns a 2017 Chevrolet Silverado 1500. While driving 45 mph, the transmission failed to shift properly and made a clunking sound. The failure recurred multiple times. The vehicle was taken to a dealer where it was diagnosed that the transmission failed and needed to be reprogrammed. The vehicle was repaired, but the failure recurred. The manufacturer was made aware of the issue. The approximate failure mileage was 30.

- Moultonboro, NH, USA