2021 Yukon slips when accelerating.

[Asercey80]

2021 Yukon seems to be slipping or making a slip bump sensation when I am stopped and start to accelerate. At first I thought maybe it was because it’s always rainy where I live but we just had knee tires put on and it is doing the same thing. Any ideas?

 

[thill466]

2021 Yukon seems to be slipping or making a slip bump sensation when I am stopped and start to accelerate. At first I thought maybe it was because it’s always rainy where I live but we just had knee tires put on and it is doing the same thing. Any ideas?

Did you ever figure this out? My wife's 22 at4 has a slip/driveline slack on acceleration 1 our of 10 times from a dead stop.

 

[tom3]

Not sure on the newer stuff but being just a bit low on trans. fluid can cause this on some transmissions, Mopar stuff for sure.

 

[coachhomer]

My wifes 2021 just started doing this and I was hoping to find some information on here. I hooked it up to a scanner and the trouble code I received was U043A Invalid Data Received from Suspension Control Module B. Will be searching and get back with any additional info I find.

 

[thill466]

2021 Yukon seems to be slipping or making a slip bump sensation when I am stopped and start to accelerate. At first I thought maybe it was because it’s always rainy where I live but we just had knee tires put on and it is doing the same thing. Any ideas?

My wifes 2021 just started doing this and I was hoping to find some information on here. I hooked it up to a scanner and the trouble code I received was U043A Invalid Data Received from Suspension Control Module B. Will be searching and get back with any additional info I find.

Any luck finding your issue?

 

[coachhomer]

Any luck finding your issue?

Not yet. Holiday weekend but ours seems to be getting worse. Will definitely report back with any findings...

 

[thill466]

Not yet. Holiday weekend but ours seems to be getting worse. Will definitely report back with any findings...

I'll do the same.

 

[thill466]

Not yet. Holiday weekend but ours seems to be getting worse. Will definitely report back with any findings...

FWIW, I noticed my wife's car was in "auto". I know GM claims it wont damage it to leave it in auto, but obviously there is no need to leave it in auto for daily driving if the car is a pavement princess. I switched it to 2wd, and could not get the slight random thud to replicate. I only drove it for 15 minutes, once I'm able to drive it more I will report back if that solved the issue. Would be interested to know if y'alls is also in auto or 2wd when you had the bump?

@Asercey80 @coachhomer

 

[steiny93]

There is another post about slipping type behavior; I did a quick search but didn't find it. Root of the issue was the OP had been running in Auto for a very long time.
Basically, Auto in the dry accelerates wear in the drivetrain and it feels like slippage.

 

[coachhomer]

FWIW, I noticed my wife's car was in "auto". I know GM claims it wont damage it to leave it in auto, but obviously there is no need to leave it in auto for daily driving if the car is a pavement princess. I switched it to 2wd, and could not get the slight random thud to replicate. I only drove it for 15 minutes, once I'm able to drive it more I will report back if that solved the issue. Would be interested to know if y'alls is also in auto or 2wd when you had the bump?

@Asercey80 @coachhomer

So funny. You beat me to it. That was my wife's issue. Never noticed it.