Mechanics

BUICK REGAL REBUILT PROBLEM

1993 Buick Regal • 300,000 miles

My regal's transmission goes in and out of overdrive at speed (30 to 35 mph). It was rebuilt over 5 years ago and I have not had any problems with it until now. Any suggestions?
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Hernamos
March 7, 2013.



Overdrive should not be engaged until 50-55. It is shifting too early into this gear

Roy