Hi all: I have a problem, I just took the blazer out to check out the 4x4 and it failed. I locked in the hubs and they made the infamose clicking noise in two wheel drive. I then shifted into 4x4 the clicking went away but when I tried to climb a steep hard packed hill the clicking came back and, the front did not pull. I bought the truck without the motor and do not know if the hubs worked (the hubs I believe are factory spicer). I do know the front driveshaft turns and the axel shafts lock in while in 4x4. My question is are the hubs toast or did I not put them back together right. Thank you for your help. Its time to lock them in!