misfire

2009 GMC ACADIA
103,645 MILES • V6 • FWD • AUTOMATIC
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GOLFNLANCE
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  • 1 POST
My check engine light came on and the truck started running like crap. Took it to Autozone. The codes said that all six cylinders were misfiring at one time or another. What would cause all six cylinders to misfire?
Jan 22, 2016 at 10:13 PM
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PRESTON411
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Sounds like you may have the infamous Timing Belt issue... be prepared for a $5000 bill... join the club!!
Jun 30, 2017 at 3:56 PM
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STRAILER
  • CERTIFIED EXPERT
  • 53,854 POSTS
This engine has a timing chain. It sounds like the spark plugs are worn out and causing problems for every cylinder.

Here is a guide that will help you get the problem fixed.

https://www.2carpros.com/articles/how-to-test-an-ignition-system


Please let us know what happens, we are interested to see what it is.

Cheers, Ken


Jul 2, 2017 at 8:46 PM
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