I have a 2004 Grand Prix GT and when I'm going 70-80 and let off the gas, the engine shutters and the revs will lower then go to normal a couple times.
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10-06-2010
I have a 2004 Grand Prix GT and when I'm going 70-80 and let off the gas, the engine shutters and the revs will lower then go to normal a couple times.
10-07-2010
Might be a vacuum leak, or some transmission issues, like a clogged or worn valve body. Get it scanned and see what codes you're throwing.
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