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Old 10-04-2010, 04:39 pm   #1
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2007 Z51 A6. Yesterday I was leaving from a store. The car started driving just fine. As the car went throught the gears, it seemed to start running a little rough' when it got to third gear it would not shift any further. It does not matter if it is in drive or sport mode. The paddle shifter does nothing. The check engine light came on. It seems like the car is locked in third gear. About 1500 miles ago a Procharger and headers were installed. The car was tuned and ran great until yesterday. I was not on it hard when this happened. Any one have any ideas?

Last edited by Velocity Mike; 10-04-2010 at 04:41 pm.. Reason: Incorrect Tag
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Old 10-05-2010, 01:52 pm   #2
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With that Procharger you might be making a little to much power for the tranny. Or perhaps too much TM has been removed making it even harder on the tranny.
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Old 10-05-2010, 05:59 pm   #3
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Quote:
Originally Posted by Velocity Mike View Post
2007 Z51 A6. Yesterday I was leaving from a store. The car started driving just fine. As the car went throught the gears, it seemed to start running a little rough' when it got to third gear it would not shift any further. It does not matter if it is in drive or sport mode. The paddle shifter does nothing. The check engine light came on. It seems like the car is locked in third gear. About 1500 miles ago a Procharger and headers were installed. The car was tuned and ran great until yesterday. I was not on it hard when this happened. Any one have any ideas?

I would take it back to your tuner or installer and have it looked at. You at least need to know which code/codes are stored in the PCM.

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