I have a 99 5.3 with a 700r4 behind it and I want to utilize the P/N switch. I have pin 34 hooked up to ground when in p/n, and the pcm programmed for p/n only. Do I need to check something in the DTC list? I must be missing something, but I can't figure it out. The PCM was programmed as a manual trans, but has been segment swapped for a 4L60E now and still doesn't seem to work. I would appreciate any help.
