How do I replace rear bearings on a 2006 GMC Sierra 1 ton dually?

SOURCE: replace rear axel bearing on 4x4 5.3 Litre gas engine

Loosen differential cover and let oil drain. Remove cover, remove U lock from axel. Pull axel out. Remove bearing seal then bearing. Install new bearing, seal and reinstall axel. Reinstall U lock and new cover gasket. Fill with 75-90wt gear oil. Now I know that sound pretty straight forward. But there are some things to remember. The U lock can be difficult to remove sometimes. The most important thing is the seal, you will need to make sure it gets seated correctly and not torn when installing axel.

SOURCE: Have to replace rear wheel

This is a pretty involved job. You will need some specialized tools also.
It involves removing the rear axles.
The bearings and seals are at the end of the axle housing.
On a DIY scale of 1 - 10 (with 10 as the hardest) it's about a 6 if you are comfortable doing major automotive work.
If you need additional information, and specifics, just let me know.

SOURCE: how do you replace left front unitized bearing on

You have to remove the wheel and the brake caliper. If it has antilock brakes disconnect the antilock break sensor wire up by the frame and get the wire free form the holders. Remove the big nut on the end of the axel shaft with a 1-3/8 inch socket, now turn the steering all the way to the left and losen the two bolts behind the hub with good 18MM socket. They are usually very tight be carefull not to round the head of the bolts use a good quality 6 point socket. Turn the bolts out about 6-8 turns and stop now turn the steering all the way to right do the same with the other two bolts. Now, take a air hammer with a punch end in it and hammer on the heads of the bolts, a little at time, on all the bolts, evenly until the hub is loose. If you don't have a air hammer a hammer and punch or drift will work. Then remove the bolts the rest of the way and pull the assembly off. Now you have to drive the wheel studs out and remove the rotor. I just described it on 3/4 ton a 1/2 ton might be easier but the principle is the same, I think there are only 3 bolts holding the hub on and the bolt sizes may differ. Also I think you can pull the rotor right off once caliper is out of the way. Sorry about that.

SOURCE: how to replace differential bearings on a 2002 gmc

1. jack up the truck and support the axle with two jackstands
2. remove your wheels, differential cover(use an oil pan for fluid is going to spill everywhere)
3. remove your roll pin, it has a small bolt (use 1/4 inch drive with socket to save yourself from living hell)  (inside the gear carrier with the four small gears (it is ok to spin the axle at this time (remove your driveshaft or chauk the wheels and put the car in 2 wheel drive and in neutral)
4. after the pin is removed, DO NOT SPIN THE AXLES, push the axles toward the differential, remove the "C" clips at the end of each axle shaft, then slide your axles out of the axle tube.
5. now, unbolt the two carrier holding clamps (4 large bolts) and carefully remove the carrier, on each end of your carrier should be 2 out of the four bearings that could need replacing. (note that without specialized precision tools this will be impossible to reassemble correctly, this is concidered to be an "A" grade technitian's job in the work force) (reply back if you want a list of tools and tests you will need in order to get your differential working again)
6. remove the driveshaft if you havent done so already and unbolt the pinion gear nut (hidden inside the driveshaft yolk attached to the differential) (an impact gun is recommended because the pinion will spin and if you try to hold it, it will cut open your hands) then carefully slide the pinion out of the large opening in your differential.
7. the last two of four differential bearings will be here, previously supporting your pinion gear + shaft. they will fall out but you will need a brass punch and hammer to remove the outer bearing races that have been pressed into your differential.
8. clean the now open differential cavity plus gears with brak-kleen or other grease and oil remover then wipe clean with a lint free rag.(inspect for any damage and replace if nessisary)
9. hammer your pinion gear races in EVENLY and in the right spot, double check that everything came out in the same order that your about to put them in.
10. install new bearings and find (i couldnt tell you where) a new crush collar for your pinion gear.
11.after your pinion bearings are in, put your new pinion oil seal into the differential (a wooden board or any other flat stock will help) and hammer in evenly. (oil the seal before installing)
12. take off the old crush collar and install the new one (note the size difference)
13. when the pinion is in, reinstall the driveshaft yolk and tighten the pinion nut to 250-350 foot pounds (no you do not need glasses, you read that correctly)
14. (here is where the presicion work begins on your new differential) if you want to take it to a professional i do not blame you. if you really feel you can do this on your own, ask for the last 10-20 steps and ill gladly give them to you.

Hope this helps!
                       Joe.

Ronny Bennett Sr.

• 6988 Answers
• Posted on Apr 14, 2010

SOURCE: 1994 gmc sierra 1/2 ton 350

Replace the pickup coil in the distributor,this pulsates the injectors.