Resurrecting an old thread here but just in case someone is still around...Same problem with my 2001 Durango 4.7. Last year mechanic shook things up a bit and she started working again but soon failed. No backup lights and it's inspection time again. This time, no luck, lights aren't coming back on.
I assume given that I have the smaller engine, the issue here is that this stupid bad switch is INSIDE the transmission, meaning this is a transmission dismantle job and a major amount of labor for a small part.
My mechanic has posited just putting in an override switch that I control, which I am likely to do, but even that now has proven a challenge for him in finding where to splice in, it seems.
Any mechanics around who can tell me what I'm reasonably in for as far as labor effort and cost for a job to basically take apart a transmission just to get at and replace a dumb switch that should never been in there in the first place? Of course on the bigger engine it's outside...and I could have done this myself.