Every couple of weeks I put my '99 SL2 into reverse and it wont go.3 times I wasted good money on mechanics who thought that it was the ATF that needed flushing & filling yet the problem persists?Any idea?.

Gud day please try to check the atf level and the atf,some times atf need to be replaced and need to clean or replace the atf strainer

SOUND LIKE BAD EGR VALVE.IT WILL CAUSE ROUGH IDLING AND STALLING OUT ENGINE WHICH WILL CONTAMINATE OXYGEN SENSOR WITH RICH FUEL MIXTURE.

Sometimes, it is a good idea to trade away your headaches for something that you won't have to continually put money into. That car seems to be nickeling and diming you to *****.

Replacing parts without analysis is just wasting money. You need to take it to a mechanic with the right engine analyzer.

yes you can, after disassembly of the trans.

there could be a transmission problem, if you can have it hoisted get the trans cover off, look for metal shaving s or sediment- if it exists then that is your issue if automaticc, Transimssion cogs could be seizing if its manual. If not then I would be looking at your suspension components.

replace tranny filter and fluid, do not do tranny flush, could cause more problem. just filter and fluid change

The chip in your ignition key is bad or most-likely the computer that controls the anti-theft part of your van, called PATS. Not an easy fix unless your mechanically inclined and know how to operate a multimeter...write back if you are...otherwise, find a mechanic good in electrics and tell him what I said (so he doesn't waste YOUR time).

yes take it back if you are still under warranty.

Whoever told you that you need a new transmission was correct!! I had to have mine replaced last September. Unless you have a friend that's a mechanic it's going to cost you at least $2000.00 if not $2500.00. Hopefully you have some mechanic friends. GOOD LUCK