2012 ACADIA SHUTTER PROBLEM - GMC Acadia Forum: AcadiaForum.net
 
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post #1 of 4 (permalink) Old 05-15-2017, 01:34 AM Thread Starter
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2012 ACADIA SHUTTER PROBLEM

I HAVE A 202 ACADIA AND THE TRANSMISSION SHUTTERS WHEN DRIVING BETWEEN 40-50 MPH AND WHEN GOING UP HILLS. WHAT COULD BE THE PROBLEM. IT HAS BEEN HAPPENING MORE AND GETTING WORSE. THE VEHICLE JUST RAN OUT OF THE FACTORY WARRANTY AND GM CARES DO NOT CARE ANYMORE ABOUT IT AND I HAVE HAD SO MANY PROBLEMS WITH THIS ONE. ANY ADVICE WOULD HELP AND THANK YOU.
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post #2 of 4 (permalink) Old 05-15-2017, 02:26 PM
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Mileage on vehicle- and what services have you done to it.

2010 FWD LT1-Gold Mist Metallic- seats 8.
Build Date- July 31, 2009-2nd day of Spring Hill 2010 production.
2013 Equinox 3.6L - 60,000
2010 Traverse 3.6L- 127,000
2003 Trailblazer 4.2L-180,000
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post #3 of 4 (permalink) Old 05-18-2017, 10:11 AM
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Don't know if this OP will be back. Seems someone is just PO'd and feels like yelling at a forum. It also appears that the condition is occurring at the point where the transmission likes to shift between 5th and 6th gears at the slightest grade change. What is described seems normal. (I also wish people would understand the difference between "shutter" and shudder. Thanks NEA!! )

2007 Acadia SLT-2, 'HiYo' Silver outside, Titanium/Ebony inside, no NAV, no HUD, no errors
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post #4 of 4 (permalink) Old 05-18-2017, 10:36 AM
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I chased the same problem for months and thousands of dollars. I even changed the timing chain once the CEL came on. I traded in the 2012 after the timing chain didn't even correct the problem.

Dealership blew the engine shortly after my trade, found a faulty crank shaft bearing was to blame for that problem.

They installed a new engine and have told me that the hesitation / shudder has gone away. Talking to the salesman that I purchased my 2017 Acadia from, he tells me that they damaged the torque converter while attempting to align the new engine and had to replace it.

I recall another member here describing the same hesitation / shudder problem and replacing the torque converter to correct it.. that could be a good starting point.

I'm not sure if the torque converter could have caused the bearing to go bad (the whole vehicle shook badly when the hesitation occurred, and I'm sure that was felt through the engine too.

I tried the following to no avail....

-Spark plugs
-Wires
-Throttle body
-Timing chain
-Air filter
-O2 sensor
-Injector Cleaner

Good luck

2008 SLE AWD 8psg Medium Brown Metallic RIP<br />2010 SLE2 AWD 8psg Summit White / Sunroof / tow pkg Traded-IN<br />2012 SLE2 AWD 8psg QuickSilver / Sunroof / Bose Traded-IN<br />2017 SLT1 AWD 7psg Summit White / Navigation / Sunroof / Bose / Tow pkg
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