Pontiac G8 Forum: G8 Forums - G8Board.com - View Single Post - RPM too high after driving or WOT
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post #14 of (permalink) Old 03-17-2019, 07:49 AM
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Unfortunately, customer no service seems to be par for the course these days and don't blame you for not making the four hour trip. At any rate, here's a thread regarding the LS3 throttle body... https://www.g8board.com/forums/5-v8-...ttle-body.html. Failed to ask, how long has the tune been on the vehicle? No other thoughts outside of checking for a vacuum leak. Good luck


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