New 2016 GMC Yukon Rough Idle

[DenaliKing]

I have a 2016 GMC Sierra 1500 Denali that was experiencing the same issues as you describe above, I have since had the fuel injection cleaned, I've had to transmation looked at and still the problem persisted. I recently took it back in and had them check the engine mounts specifically, and discovered this is the problem and is also covered under warranty up to 60000 miles, however if you are passed 60000 miles you have to pay for that repair yourself. Which is not super expensive. The engine mount internal part breaks because of a defective engine mount which allows the engine to sit on the frame and you're feeling the engine run as it sits on the frame that's where the shaking comes from. Don't let anybody tell you any different at any other GMC dealership i have gotten the run around also, but what it comes down to is it is the engine mount and it is a defective part and GMC is well aware of it. Change your mount(s) and you should be good to go.

[DenaliKing]

On 3/20/2020 at 10:18 AM, DenaliKing said:

I have a 2016 GMC Sierra 1500 Denali that was experiencing the same issues as you describe above, I have since had the fuel injection cleaned, I've had to transmation looked at and still the problem persisted. I recently took it back in and had them check the engine mounts specifically, and discovered this is the problem and is also covered under warranty up to 60000 miles, however if you are passed 60000 miles you have to pay for that repair yourself. Which is not super expensive. The engine mount internal part breaks because of a defective engine mount which allows the engine to sit on the frame and you're feeling the engine run as it sits on the frame that's where the shaking comes from. Don't let anybody tell you any different at any other GMC dealership i have gotten the run around also, but what it comes down to is it is the engine mount and it is a defective part and GMC is well aware of it. Change your mount(s) and you should be good to go.

Spot On,  I had my mounts replaced at 53k, same issue... and went through all fuel injection cleaning... check this... check that... my main issue is with the dealerships... they know the issue yet 90% suck because they don't tell you... I'll leave it at that...SMH