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Originally Posted by kevin9333k
I have a new denali 2002 with 17K miles on it. Something really weird happens - only occasional tims - when you press on the gas petal the Denali actually seems to loose 50% of the acceleration then the egine light comes stating check engine. This light stay on for 1-2 minutes then goes off.
Then next time when starting the Denali it is fine and has plently of power.
Any ideas??
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Get the computer scanned. Once you have the code(s), it will help determine what the problem is.
Good Luck,
//2000CAYukon