Question about 1999 Pontiac Grand Prix
YOUR OVERDRIVE SOL IS NOT WORKING
Posted on Mar 19, 2010
This is usually caused by
(1) Shift linkage loose, bent or binding
(2) Worn or damaged internal components
Hope this helps with your problem.
Posted on Jul 25, 2009
The 4th gear clutch shaft has very fine teeth that wear over time, if vehicle has high miles, this shaft may have failed, a sprag may have failed, the 4th gear selenoid may be bad, the 4th gear clutches could be fried, the valve body may be leaking / venting clutch apply pressure, the range selector may be off causing the VCM to believe you are in 3rd. Good luck!
Posted on Jun 24, 2009
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Posted on Jan 02, 2017
some of the trannys has straps in them that sometimes needs to be tightened and that could be the cause of it
Posted on Mar 24, 2009
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