Douglas L Self

I have a 2020 GMC Sierra 1500 5.3 with less than 11 K miles I have had it in for the problem 3 times. I am told there is nothing that can be done to correct it. Here is the problem, at any speed (especially highway speeds) a vibration occurs frequently, it only last a few seconds but a mile or so down the road it will happen again. This happens on flat roads hilly roads and can really be felt on smooth roads. The last time I had it in the service department they said it is happening when the engine changes from 8 to 4 cylinders and back to 8 cylinders and that there is nothing that can be done to correct it. It is hard for me to believe that GM has built a vehicle with a very annoying problem and it can’t be corrected. I am thinking seriously about putting signs on the truck that says (DON'T BUY GMC TRUCKS THEY CAN'T FIX PROBLEMS WITH THEIR MOTORS). I paid way to much for this truck to have to have to go down the road with it vibrating and shaking, very annoying!! Suggestions anyone?

I have a 2020 GMC Sierra 1500 5.3 with less than 12 K miles I have had it in for the problem 3 times. I am told there is nothing that can be done to correct it. Here is the problem, at any speed (especially highway speeds) a vibration occurs frequently, it only last a few seconds but a mile or so down the road it will happen again. This happens on flat roads hilly roads and can really be felt on smooth roads. The last time I had it in the service department they said it is happening when the engine changes from 8 to 4 cylinders and back to 8 cylinders and that there is nothing that can be done to correct it. It is hard for me to believe that GM has built a vehicle with a very annoying problem and it can’t be corrected. I am thinking seriously about putting signs on the truck that says (DON'T BUY GMC TRUCKS THEY CAN'T FIX PROBLEMS WITH THEIR MOTORS). I paid way to much for this truck to have to have to go down the road with it vibrating and shaking, very annoying!! Anyone else have this problem and does anyone have a suggestion how to correct it?

Will the 6 way tail gate fit a 2019 2500 HD? I am up in age and would love this feature on my 2500 as it is much higher off the ground? I see that it is an option on the 2020 3500.