GMC Acadia owners have reported 4 problems related to manifold/header/muffler/tail pipe (under the engine and engine cooling category). The most recently reported issues are listed below. Also please check out the statistics and reliability analysis of GMC Acadia based on all problems reported for the Acadia.
1* purchased March 2018 (acadia denali) since August 2018 in motion when I accelerate it sounds like a loud lawnmower & crackling sound in rear muffler area. Took it chevy place in glenpool, ok. They couldn't find anything. 2* on 2 occassions, in motion, the car accelerated with a loud noise & as if it were getting power & not moving then jerks & speeds up about 15mph faster & I couldn't stop it. I kept slamming on my breaks, but the break would only go in so far. I was frightened with my 2 young boys in car screaming. It's like riding a horse & it takes off & you can't control it. 3* on about 8 or 9 occassions stationary I get out of my car & it makes a really loud annoying sound like a machine/robot powering down. My kids always say, it's going to blow up 4* the most annoying, for past month. . . Stationary, every single day & time I turn my ignition off. It has loud beeping sound & check rear seat flashing on screen then shift into park flashes. This occurs every single time I turn my car off. Sometimes I have to just let it go on all day because I can't get it stop. I turn car on & off shift back & forth & it still will not go off. Sometimes it does after long periods of time. I don't have time to struggle with getting a car into park every single time I turn my ignition off. I have to beat it forward hard with my hand to the point my wrist is bruised. Now I have to use my foot to kick gear shifter into park. I'm afraid t's going to roll out & or down and hit something, someone or even one of my children. Which would not be good. I've seen several of same complaints. This really needs to be investigated & recalled ASAP. My elderly mother had to call my brother to another part of town to beat the gear shift into park. This car was brand new & I shouldn't have any of the above mentioned issues. It's frustrating thinking GMC was top of the line & it's not.
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all problems of the 2018 GMC Acadia
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The engine misses and has severe carbon buildup on the valves. The intake boot and intake manifold are covered in oil residue from the breather tube for the motor. The transmission started having issues at 100k. It hesitates, shutters, and fails to change gears while driving at highway speeds. The transmissions are a known issue and I dont understand how this is not a recall.
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all problems of the 2012 GMC Acadia
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Bad engine oil leak and is dripping on manifold shield which causes smoke. . . It is getting worse. Could catch fire.
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all problems of the 2007 GMC Acadia
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Stopped at stop sign making right turn excellerate to 10-15 mph notice gargling sound or like a muffler explodes power reducted. . . With in a hundred yards or so engine light go on power (engine) failure not breaks or stearing available coast to curb try to start vehicle again. . . Dead as a door nail. Flat bedded to kerbeck GMC dealership by 1:00pm 09/12/16 . . . Service mgr. Call at 6pm no news still being diagnosed, will call in the am. . . Later that day called to tell me that it sucked a valve and has broken rocker assembly and seems to be damage in the lower end of the motor! need new engine. . . Vehicle is in the hands of the dealer! no written report has be given to me, just verbal! passange in vehicle at time of occurance. . .
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all problems of the 2011 GMC Acadia
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