Decel vibration

[Randy Taylor]

My 2019 Silverado Custom with 5.3 I have noticed it vibrates slightly, not really a shudder only when slowing down, its not a rotor issue or brake problem I don't think, it seems to have some driveline involvement, almost like they have built in some engine braking, Normal?

[lebag335]

It’s likely the Duratacs grabbing the road surface. 

[Randy Taylor]

Not running Duratracs, has 20" Generals

[RaisedByWolves]

My truck does something similar and it is indeed shifting down through the gears as you coast.

 

I have the 6.2 so the shifting is probably more pronounced.

[STX30MAC]

My 6.2L with 10 speed does the same.  slowing from 55 there will be a gear vibration I can only feel int the brake pedal then it goes away and has a good vibration before shifting into 1st gear (you will feel and hear the rattle) with a push.  Depends on the stop though.  real slow stop I barely feel it.  Firmer stop its more pronounced and will sometime give a pretty good push/kick after the vibration as it shifts into 1st.  Had 4 people at the dealer drive it and all said they couldn't feel it.  I still feel it every stop.  I have a 2015 Yukon XL with 6.2L and the trans sucks on it but I do not feel anything when slowing to a stop.  I have tried driving in sport, and tow mode. no change. Tried all with out traction control as well.  I keep thinking it will go away.  its not getting worse but not getting better either. I do have a 6in lift with 35s but I am sure it did the same when it was stock, it was just harder to feel.  Just rolled 8k miles.  6k with lift.

[hotrodz37]

My 6.2L with 10 speed does the same.  slowing from 55 there will be a gear vibration I can only feel int the brake pedal then it goes away and has a good vibration before shifting into 1st gear (you will feel and hear the rattle) with a push.  Depends on the stop though.  real slow stop I barely feel it.  Firmer stop its more pronounced and will sometime give a pretty good push/kick after the vibration as it shifts into 1st.  Had 4 people at the dealer drive it and all said they couldn't feel it.  I still feel it every stop.  I have a 2015 Yukon XL with 6.2L and the trans sucks on it but I do not feel anything when slowing to a stop.  I have tried driving in sport, and tow mode. no change. Tried all with out traction control as well.  I keep thinking it will go away.  its not getting worse but not getting better either. I do have a 6in lift with 35s but I am sure it did the same when it was stock, it was just harder to feel.  Just rolled 8k miles.  6k with lift.

 

Mine is doing the same thing except I have a 2019 8 speed with the new fluid. From 23mph down, until it shifts into first if feels like a rumble strip. I thought the 10 speeds were safe from this but I guess not. Guessing it’s the torque converter locking up?

 

 

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