car doesn't shift out of 1St gear [Archive] - GrandAmGT.com Forum

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coreyod90
12-05-2012, 10:28 AM
I have a 99 gt that has seemed to cause me nothing but problems. Car is sentimental because my mom bought it for my first car before she passed. I already did the sub frame and motor all about 10k miles apart now like clock work 10k later Trans problems. Now Trans won't shift out of first and relined around 80 mph. what could be my problem? I'm new to transmissions but I'm good with mechanics. Any help please before I have to retire the car at only 151 k miles.thanks in Advanced.

rocketfast123
12-05-2012, 12:22 PM
Change the fluid and filter, then see what happens. Sounds like it's on it last legs. Put some Lucas Oil Transmission Fix in it also.

MAC the KNIFE
12-05-2012, 05:26 PM
well 2nd gear would redline at 80. maybe it's stuck in 2nd, or it is actually shifting. lots of us have had transmissions go bad. it's a common weak spot on these cars.

if you've got the tools and the time, a low mileage 4t45 transmission cant be expensive or far away from you.