Question about 2006 GMC Sierra
Take off the drive shaft?
PUT BLOCKS IN FRONT AND BEHIND THE FRONT WHEELS so the vehicle can NOT roll anywhere... into you, over you, into your kids, through the garage wall, down the driveway onto the neighbour's lawn.. etc.. these stupid things happen to people.. so start safe. (and work somewhere reasonably level)
Jack the truck up so the rear wheels are slightly off the ground, put stands under the axle on either side for safety.. put the vehicle in neutral.. climb underneath
and undo the drive shaft spider. There's four bolts.. two each side, that hold the bearing caps to the differential.
Once you have the bolts out and caps off, (in some vehicles they're little U shaped bolts) you should be able to just **** the drive shaft a little bit forward towards the engine or wiggle it a bit.. it should slide forward enough to release the rear spider. Try to keep the bearing caps on the spider.. should they fall apart or fall off you'll have needles all over the place (needle bearings). You can replace the spider if the caps are sloppy or the needles are really rusty. I usually just wrap them on with some electrical tape to keep them on until it's reassembled, and carefully remove them to inspect them before reassembly.
Don't, pull the front of the drive shaft out of the transmission. While it accidentally can happen, it makes a huge mess, as transmission fluid will flood out of the transmission. You can reinsert it if this happens, just make sure it's clean. It is free to move slide, and fall, and can also result in a nasty little bonk on the head, should you accidentally pull it towards the rear of the vehicle until it falls out.
Once you have that apart, you should be able to spin your blocked up rear wheels if the diff's good.. or not, if the diff's shot.
Was a vague question.. I hope I said something useful..
Posted on Jan 28, 2009
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Posted on Jan 02, 2017
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