Hello all,
I am having a problem in the last couple of weeks with my transmission not doing anything when I go into overdrive when passing on highway or quick take-offs that want to stay in low gear.
2002 Grand Prix GT, with 211,000 kilometers (131,000 miles) on it.
Symptoms:
Stepping on the gas while moving (WOT for instance) causes the transmission to downshift - RPM's hit 4500-5000 but there is no gear catching. Just high rev spinning. I must allow the engine to slow by itself before it'll catch a gear.
Stepping on gas from a standstill causes the same thing. RPM's stay high until the throttle is let off enough for it to kick into gear. The first time scared the crap out of me, I had no movement and my engine sounded like it was going to blow up!
No other symptoms that I can feel/hear... taking off of the line normally is fine. It seems to shift through all gears, both up and down when driving normally. Only when I step on it does this happen.
Recent work done on the car:
Two months ago I did a transmission pan drop and fluid/filter change (not flush). I did end up putting Dexron 6 into it after doing a bunch of research and reading it as fine to do. Fluid looked "okay" coming out of it, there were no large particles, just the standard silt on the magnet.
I assume that there is a problem that needs to be fixed, I'm just looking for advice on where to head. I really hope that I don't need to rebuild the tranny... haha, but you never know I guess.
Cheers,
Chris