I'm no automatic transmission guy. Looking at the clutch & brake activation table, I would guess
that you might have issues with the K2 & K3 clutches.
Valve body issues (worn / dirty / plugged passages) or faulty shift solenoids can cause shifting
Any trouble codes stored in the TCM? Any aggressive driving in the past? Does the Transmission
fluid smell burnt?
A good transmission shop should be able to do pressure tests & diagnosis to find the problem.
If you have already gone that route and they said you need a tranny, then I'm sure their
diagnosis was correct.
Friday, October 19th, 2012 AT 9:47 PM