My 01 GMC Sierra 1500 5.3l v8 will not drive or reverse.
Back in February i got home from work and my
truck never had any out of the ordinary noises or
clanks or anything and when i got up in the
morning for work i let the truck warm up for a
good 20-30 minutes and when i went to take off
for work the truck would not drive or reverse. Since
then my father and I have been replacing and
fixing anything we could think of. We have put 3
trannys in, a transfercase which is opperational
and working, checked and cleaned all the grounds
and connectors and replaced 1 connector that had
an exposed wire and was previously sautered,
replaced the tranny range switch, and checked the
fuses etc. My dad has been a mechanic for many
years now and we are completely stumped on
what it could be. I thought to myself maybe it
could be the pcm or tcm but im not sure. The
shifter on the consol shifts down and up and
moves the range shifter on the tranny just fine so i
know the cable isnt broken and all fluids are fine
as well. I know it also was not because of the cold
(I live in ND) because we have been working on it
all summer long and still cant get it to drive.
Please help me, i am desperate to get my truck
driving again i have been out a vehicle since then.
