I am in the middle of a problem we just had with our 2000 trooper/3.5/automatic. Pulled a 2,600 lb boat (Trooper is rated for 5,ooo lb) at 45 to 55 mph up a grade. Trans temp light went on, set a code. Dropped off at dealer to check and reset code, was told we voided the warranty by towing and they could not do the fluid /filter service under warranty. I had this done on the 30,000 mile factory (now has 47k) service ($700) and they want $500 to change filter and fluid. Dealer claims trans service is unique and requires fluid to be pumped to flush, and does require removal of crossmember. There is no dipstick/filler, there is a drain plug on pan bottom and what looks like a filler plug on the housing just above the pan gasket. This plug faces down, so It must use something special to fill. Also, burnt fluid must be flushed out of converter... any ideas?
Anyway, I'm pissed that I have to spend another $500 for something that should not have overheated the tranny to begin with. Has anyone had any experience servicing this tranny? I'm calling the Isuzu DSM on Monday to plead my case.
Thanks for your replies..