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I recently bought a used 2016 Sierra Denali 5.3L 4x4 in March with 48k miles. Truck has been great until yesterday (now 52k miles) when I ease into the gas it shudders and shakes like crazy until i punch it. The tach is bouncing up and down and it doesn't matter if it's in v8 or v4. It almost feels like it's a misfire but it's weird that it only does it when I'm easing into the throttle or going uphill. The truck has the 8 speed transmission. Has anyone else ran into something like this and would the manufacturer warranty cover the fix for this?

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I have the 4.3 V6 and it does the same exact thing. I know a guy with a brand new 2017 with 18k miles and it does the same as well. C'mon Chevy ! Been makin trucks for decades and you mean to tell me you can't make a truck that doesn't do things like this? 

Edited by LuckySOB

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Use the search and put in "gas pedal flex solution". There is a long thread on symptoms and solutions. Easy fix.

Edited by DONWT15

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23 hours ago, DONWT15 said:

Use the search and put in "gas pedal flex solution". There is a long thread on symptoms and solutions. Easy fix.

I checked it out but unfortunately that doesn't seem to be the issue with mine.

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Take it to a dealer to get it checked. You should have some power train warranty left at 52k.

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Sorry I dont have the exact details right now for you because Im at work, but there is a bulletin for the transmission to be flushed 3 times and be refilled with synthetic.  Had the same symptoms (always around 14-1600 rpms) and this was a temporary fix for about 10,000 miles.  Thats my guess if you have the 8 speed.


Wow i havent been on this site in a long time.  My sig pic is waaaay outdated.  I have a 2015 Denali 6.2L now

Edited by jwieps

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You are experiencing the torque converter shudder, pretty common apparently, my 16 has or had it and the only fix they will do is change the fluid in the trans once and that is it for now. For me I felt like I was running over rumble strips when I lightly accelerated. Mine hasn't come back as of now. Apparently there is a more permanent fix coming first quarter 2019. 

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UPDATE: took it to the dealer and they said it is a pretty common issue with the type of ATF fluid that GM used in these trucks causing the torque converter to shudder. They changed the transmission fluid and it seems to have fixed the problem.

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Today i purchased a beautiful 2016 GMC Sierra SLT 2 ALL TERAIN pickup.

After leaving dealership with it.

It began to have a VIBRATION with Acceleration.

Is there a permanent fix for this.

Torque converter shutter.

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On 10/4/2019 at 1:44 PM, Ronzo said:

Today i purchased a beautiful 2016 GMC Sierra SLT 2 ALL TERAIN pickup.

After leaving dealership with it.

It began to have a VIBRATION with Acceleration.

Is there a permanent fix for this.

Torque converter shutter.

I actually have the same issue. Always and only when either accelerating LIGHTLY or going uphill with low power. As soon as I gun it and it it winds up to higher gears it goes away. Has never happened while not accelerating so I know it's not my 22s being unbalanced or anything like that.

 

And it actually comes and goes. Some days I don't notice it. Other days it shudders and the steering wheel shakes like I'm driving over rumble strips while trying to drive lightly (driving slower to conserve MPG)

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Dropped mine at the GMC dealers.

They flushed the Transmission and the Torque converter.  

Replaced fluid with Mobile 1  ATF Transmission fluid. 

The shuttering went away and truck now drives perfect.  

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