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rcetlin 12/29/2012

2001 Pontiac Grand Prix SE 6 Cyl 3.1L

Transmissions & Drivetrains

Transmission is not engaging overdrive?

I've got over 150k miles on the car but the transmission was completely rebuilt in 2004. Recently, I had the passenger side axle replaced and when I got the car back, the tranny didn't want to go into overdrive. Now, I'm hoping it's coincidental, as the mechanic that did the axle is a trustworthy person. However, now I want to see about getting this issue fixed. At 60-65 mph the car is running around 3000 rpm. Would a filter/fluid change possibly fix this or is this a sign of something worse?

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