My trans has an intermittant issue I am curious about. Once in a while, not always now, when I am driving and nail it to say pass someone, the trans will start shifting very hard (not harsh by GM stds), and the trans will groan. If I shut car off, let sit for 5-10 seconds and restart, problem is gone.

I have changed fluid/filter when this started, yet it comes back now and then. For a while it was ALWAYS doing it. Now just once in a while. If I don't nail it, it will never do it. Once I nail it, and it does it, it gets hard.

If I had to guess, line pressure solenoid jammed up and line pressure skyrocketing. All shifts are proper time, just hard. If I restart, all is normal and groan is gone. Noise sounds towards front of trans.

Ideas?

Thanks!!

I would call Shane at CPT transmissions. He's always willing to help and answered a bunch of questiions for me way before I was thiking of buying one...

I would call Shane at CPT transmissions. He's always willing to help and answered a bunch of questiions for me way before I was thiking of buying one...


SHane has been posting on the NAISSO forum recently (since ISSF went down). You might want to start a post on there and see if he will chime in. Or just PM him.

What is his screename there? Same?

shane @ cpt

I think that is his name -- or something similar to that