GMC Troubleshooting Questions? Ask a Mechanic for Answers
I am sorry for the long wait
will reverse work ?
when in drive and it will not go forward is the drive shaft turning and the truck not moving ?
ok just to be clear the transmission is in drive and will not move and you see the rear driveshaft spinning but the truck will not move ?
is that correct ?
if the drive shaft is moving to the rear axle and the truck is NOT moving something has failed inside of the rear diff/axle
like a pinion or ring gear or the spider gears
the rear axle cover needs to come off to see what has failed inside the rear axle
if that drive shaft is turning the problem is in the rear axle i am sorry to say
all of the rear axle was replaced and the rear drive shaft spins in drive and the truck does NOT move ?
if so something was replaced wrong or they missed something broken in the rear axle
broken or stripped axle shaft ect..if the rear axle was good when the drive shaft is turning the truck should move
since yo visually see the drive shaft turning and the truck is NOT moving there is something still wrong in the rear axle
it can be nothing else causing this issue
you do understand what i am saying correct ? that if the rear drive shaft is spinning when in drive and the truck is NOT moving the only reason it is not moving is because the spinning drive shaft power is not making it to the rear wheels to move the truck
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