About my pontiac grand prix 3.8L

2003 PONTIAC GRAND PRIX
152,000 MILES • 3.8L • 4WD • AUTOMATIC
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MBAHE
  • MEMBER
  • 2 POSTS
When I turn the car on to warm up, I have to wait for 30minutes until it finally starts to shift. And when I drive it on the road it tends to suddenly speed up, And when I am parked at the intersection it turns off or sometimes it will shake.
Sep 3, 2014 at 4:57 AM
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HMAC300
  • ✓Experienced Mechanic
  • 48,601 POSTS
have atrans guy scan for codes first sounds like an internal tran sproblem
Sep 3, 2014 at 5:20 AM
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MBAHE
  • MEMBER
  • 2 POSTS
How would a product called "TRANS X" work? Is it worth a try? I heard of other people telling me to use it. If this car is taking a lot of money out of my pocket to fix, I might as well sell it to someone who knows about it. I'm no mechanic, and selling it would be a great idea.
Sep 5, 2014 at 2:20 AM
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HMAC300
  • ✓Experienced Mechanic
  • 48,601 POSTS
i do not endorse products that supposedly "fix" problems. Through my personal experience I have found that most do not work
Sep 5, 2014 at 2:33 AM
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