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power surging 2004 gm 3800


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repairdad
User

Sep 4, 2013, 3:47 AM

Post #1 of 2 (1471 views)
  post locked   power surging 2004 gm 3800  

2004
GM
Grand Prix
3800
250,000 km

Just purchased , loosing up as driven must have sat or at least not pushed hard lately.
Surging of power when slightly accelerating . Notice on uphill grade with cruise set.
Mechanic tested cold an said transmission major issue.
Drives nice . Seems less prevalent when hotter ?
No codes except gas cap P0455 ( large leak ) not found cause yet.

Any suggestions would be welcomed .
Thank You


Discretesignals
Ultimate Carjunky / Moderator
Discretesignals profile image

Sep 4, 2013, 4:38 AM

Post #2 of 2 (1459 views)
  post locked   Re: power surging 2004 gm 3800  

Please don't create duplicate threads on the same subject.

Closed.





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