HI guys my truck is locking up and i do not know why. 
What do u mean buy locking up? I will be driving down the road and it feels like when you bump start a car. it locks up for a second. the weird thing is it happens when im going 75 to 25 mph
so far i have rebuilt my rear axle
i have got rid of my center baring "extended my drive line"
got new hubs and new front bearings
anybody has any ideas what to do i need help big time. this truck is my daily driver and im getting worried
kinda sounds like the pinion bearing is GONE and when you let off the gas the pinion coasts right into the carrier and grabs it.
chock the front wheels, drop the drive shaft, check to see if the flange is loose. if it is remove and then remove the seal and take a look at the bearing. my guess is you'll remove it in small pieces.
