Acadia transmission jerking

My 2009 Acadia has been jerking or skipping for a few months and is getting worse. We have took it to 2 different GMC dealers and they can't find a problem. It seems to happen after the car is drove for 30 minutes or longer and when you are going a steady speed 55-65 and then pull a hill or try to accelerate slowly. On the interstate this past weekend it was awful. It would do it 5-15 times in a row and the rpm hand would be bouncing up and down really fast about 2-3mm. Any suggestions from anyone or has anyone else had this problem? A friend of mine said it could be the spark plug or coils?

Welcome to AF, how many miles, big piece of info missing here. Does the check engine lite flash when this happens?

75k miles the check engine light flashed on and off about 10-12 times then went off and stayed off. Dealer called today said they think one of the coils is bad

Agreed, the flashing cel indicates a dead ignition misfire.

So I took my Acadia to the dealer and they replaced coil #6 back in April and everything was great until this week it started doing the same thing again. My question is should I go ahead and replace the remaining 5 or have them to just replace the one that is bad?

fallin22,

I am sorry to hear you are having this concern. If you would like some assistance, I can assist you with looking into this concern. You can private message me your name, VIN, address, phone number, and name of your GM dealership. I look forward to hearing from you.

Erica Tiffany
GM Customer Care

It will not let me send a private message. The service manager at the dealer said this has been a recurrent problem and GM even may offer a recall. They quoted me $850.00 to replace the other 5 coils but I can purchase the coils for 22.00 each. Can anyone tell me if it's possible to replace them myself? Thanks for any help

Erica I recieved your private message and every time I try to reply it says error. Can you email me at wmfallin@gmail.com or give me a # to call you at.

Erica I recieved your private message and every time I try to reply it says error. Can you email me at wmfallin@gmail.com or give me a # to call you at.

Hello,

We're sorry that you've had troubles contacting us. We did post a response to your message. Please let us know if you've received it.

Amber N.
GM Customer Care

What was the diagnosed problem and solution to this issue? My 2011 is doing the EXACT same thing.

Please advise!

Thank you!!!

What error code(s) is stored? That will provide a potentially useful clue.

No codes or check engine light...just continues to do the exact same; RPMs jump and fluctuate the longer I drive it at steady speeds of 55+

I own a 2012 Acadia Denali and am having the same problems with the jerking motion. Englewood GMC said it was the coils and they changed two of them. It's still having the same problem two weeks later. Truly thinking about selling the car and getting a Ford Explorer or Jeep Grand Cherokee. How could GMC not step up the plate with this. If it is the torque converter I'm looking at $2000 which it should be covered under the powertrain warranty.

We are replacing all 6 coils and plugs. I will keep you updated if that works. In the meantime, if anyone else has any solutions, please lmk!

JTill any luck?

It's in progress and waiting to get car back from the shop... stay tuned and thank you for the follow-up!

JTill any updates?

Well... just spent another $500 trying to fix the issue and it did NOT help!!! ���� Any other suggestions are welcome... how about a speed sensor or throttle position sensor?!?

So changes out all the coils didn't fix it?

No, it did not...

Looks like it might be the torque converter which is $$$$&

So brought it to my mechanic, Acadia needs a new transmission. He has had several of these problems brought in and all the same thing. Waiting for the transmission to come in to replace.