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1999 Pontiac Grand Prix transmission messed up

Tiny
LISA4381
  • MEMBER
  • 1999 PONTIAC GRAND PRIX
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 99,000 MILES
When driving my car, the transmission won't shift when the speedonmeter dont work. I changed the spped sensor and it didnt work, wont shift until the rpms are high. If shifting manually sometimes it works. Any suggestions?
Tuesday, May 25th, 2010 AT 9:51 PM

1 Reply

Tiny
MHPAUTOS
  • MECHANIC
  • 31,938 POSTS
Hi there,

Basic checks are oil level and condition, it should be a bright red colour, you can go get a scan done to check for any electrical issues with the transmission first.

Mark (mhpautos)
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Tuesday, May 25th, 2010 AT 10:23 PM

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