Question about 2004 Pontiac Sunfire

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My 98 Pontiac grand prix's speedometer is not working properly. It works fine while the car is cold but as it starts to get warm, it begins to malfunction, stopping at approximately 50 mph even though im driving about 65. As I swerve back and forth, the speedometer moves drastically to different speeds. How would I fix this problem?

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I have the same issue in my 98 Grand Prix. My car does NOT use a speedometer cable, even though I assumed it would, as the speedometer and odometer appear to be analog. However, it is all circuit board. there is no cable.

Posted on Aug 20, 2009

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Change the spedo cable to tranny... autozone $25.00

Posted on Jul 20, 2009

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