97 P/a Hard Up Shifts


madman8874
04-17-2007, 05:55 PM
I Was Driving Up On The Highway In Stop And Go Traffic When The Car Would Up Or Down Shift It Would Be Kind Of Hard Anybody Have This Problem

maxwedge
04-17-2007, 06:24 PM
Could be a bad vacuum modulator or poor vacuum to it. More commonly the press. control solenoid in the trans could be stuck in the high position, a full trans scan will show any issues with that.

TopherS
04-17-2007, 06:26 PM
I have a bit of a rough upshift from 3rd to 4th. It was extremely noticable when my transmission mount was broken, of course...every shift was harsh then. I got the mount fixed and it's almost gone, but it's still present every once in a while...especially when accelerating and I happen to let off of the gas about the time it goes 3-4.

I put the car in the shop to have a complete inspection last week (my extended warranty expired yesterday and I wanted to be sure that any issues were resolved w/ under warranty prior to expiration). The mechanic drove the car and said it was fine. He was aware of my complaint about the 3-4 shift, but felt there wasn't anything noticable enough to indicate a problem. He did not even recommend a transmission service :uhoh: .

1-2, 2-3 upshifts seem fine...only 3-4 is occasionally a problem.

Hope this helps.

madman8874
04-17-2007, 06:33 PM
Pressure Control Solonoid Is It Easy To Change Or Is It Under The Side Cover

maxwedge
04-17-2007, 06:39 PM
It is in the side cover. but it would shift hard in all gears.

madman8874
04-17-2007, 06:43 PM
It Was After It Warmed Up On The Highway

madman8874
04-17-2007, 06:44 PM
What Does That Solenoid Cost At Gm

maxwedge
04-18-2007, 08:21 AM
The labor is about 4-5 hours plus gaskets, fluid and an 80 part. Again, a scan is required to check this out.

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