Here is one for the trans or perhaps wiring gurus!!
My 4R70W has 40K on it. Recently (not sure if related) I installed a remote starter. When driving the next day, I noticed that I could not turn off the OD on the shifter...
Playing around at a stop light, I noticed that if I shifted into neutral, it would operate normally (light came on/off)
Upon driving again, if I changed it to off in Neutral, the transmission would operate as it should 1 thru 3, not go into OD...just as it should, but the light was not on.
Long story short, upon shifting into neutral, I can operate the OD switch and the trans will do as instructed. However, once the shifter is in drive, the light goes out (regardless of OD on/off) and I cannot change the OD position on-off...
What gives?
Any ideas would be appreciated!! It's not keeping me from driving, but it is driving me nuts! I can't think of anything tranny related that I would have touched in the remote start install, but that is when this problem started.

THanks all!