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Wheel Bearing Hub Replacement "how To"
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Dad2many
post May 13 2010, 07:14 PM
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This is my first attempt at posting a "How To" so bear with me.
If you are experiencing what feels like a looseness in your front suspension or problems with your ABS, it could indicate a failing wheel bearing hub. If the wheel bearing begins to make noise or the ABS is engaging while breaking, the bearing hub is severly damaged. Replacement should be performed immediatly.

Step 1: Jack up and secure the front of the truck. Remove the front wheel.
Attached File  truck001.jpg ( 286.61K ) Number of downloads: 179


Step 2: Using an 18mm wrench, remove the two bolts on the backside of the rotor holding the brake caliper in place.
Attached File  truck002.jpg ( 211.71K ) Number of downloads: 146


Step 3: With great care the caliper can be placed on top of the upper A arm. Be sure the brake line is not dry rotted or cracking or the line will be damaged.
Attached File  truck003.jpg ( 249.34K ) Number of downloads: 141


Step 4: The brake rotor should now slide right off of the lugs. Now is a great time to inspect all brake components for wear or damage. It is recommended that any worn parts be replaced during reassembly.
At this time if the wheel bearing/ hub has failed, you will be able to move the lug plate from side to side and up and down.
Attached File  truck005.jpg ( 260.82K ) Number of downloads: 181


Step 5: Remove the spindle nut from the axle as pictured. This will take considerable force. I am not sure the actual nut size. I used an 1 3/8" socket which had to be tapped on as I am sure it is metric.
Attached File  truck006.jpg ( 263.69K ) Number of downloads: 180


Step 6: Using a 15mm wrench remove the 3 bearing hub bolts from the back side of the spindle.
Attached File  truck007.jpg ( 292.18K ) Number of downloads: 184


Step 7: Use a sharp chisle and hammer to seperate the bearing hub from the spindle housing. This should only take one or two taps. The next step is alot easier if you have a three jaw puller.

Step 8: Using a three jaw puller, pull the bearing hub from the axle shaft. This should slide easily. Disconnect the ABS electrical and remove the plastic clips as all will be replaced with the new hub.
Attached File  truck008.jpg ( 291.35K ) Number of downloads: 262


Step 9: Throughly clean the housing and axle shaft. Coat the axle splines with antisieze. DO NOT put ANY antisieze on the threaded area as this will affect the torque of the axle nut.
Attached File  truck009.jpg ( 278.71K ) Number of downloads: 196


Step 10: Slide new hub onto axle shaft. Install three hub bolts and torque to manufacturers spec. (This escapes me now but maybe someone can look it up and post.)
Install the axle nut and torque to 120-140ft lbs.
Attached File  truck011.jpg ( 216.84K ) Number of downloads: 174


Step 11: Place the brake rotor onto the hub. Again, replacement of any worn brake components should be done at this time. Reinstall the caliper. Route the new ABS cable in the same location as the old. Be sure to connect it to the vehicle wiring harness.
Attached File  truck012.jpg ( 248.76K ) Number of downloads: 137


Step 12: Reinstall the wheel and take for a test drive. Check all fasteners after 25-50 miles of operation.


I hope this helps someone. Maybe a web monitor can post to the "how to" section.
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Tahoess
post May 13 2010, 07:18 PM
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i like it, good job!!! it will defenately help the first timer save some money!

A+ thumbsup.png clapping1.gif
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Joe1129uscg
post May 13 2010, 07:40 PM
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Whew...i was glad to see the jack stand in the last pic! Thats a little jack to hold up a Z71!


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ALtahoe92
post May 13 2010, 10:08 PM
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i just had my front hub replaced today. i would have done it myself but didnt know how. plus it was still under warranty from it being replaced around christmas. im still dumb founded how that this wore out so quick. hey it was free for me this go around so no complaining
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lebenborn
post May 13 2010, 10:11 PM
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every once in awhile my abs kicks on even when its bone dry outside, could it have a bad hub?(04 silverado 4x4)


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Rollin Thunder
post May 13 2010, 10:20 PM
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QUOTE (Joe1129uscg @ May 13 2010, 09:40 PM) *
Whew...i was glad to see the jack stand in the last pic! Thats a little jack to hold up a Z71!


you should see the piece of shoot stock jack Gm gave me for my NNBS.


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Dad2many
post May 14 2010, 04:26 AM
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Yeah, I tried to get the jack stand in the pics because I was afraid someone might think I left it on the jack. ALWAYS use a stand, I just leave the jack for added measure. You don't want to trust the jack when your head will be well inside the wheel well.

lebeborn: have you noticed any clunking in the front end that feels like a worn rubber bushing?
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Gary P
post May 14 2010, 04:35 AM
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Dad2many - Very nice step by step. thumbsup.png This should give the novice enough encouragement to replace the hubs by themselves, and save a truckload of $$$$. Buy good parts (Timken if available), follow the above steps, and you're good to go!


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HokieNav
post May 14 2010, 06:04 AM
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Great writeup, this should certainly be pinned.

Glad to see the jackstand too. smile.gif That looks like a nice jack with the rotating handle, I'll be that comes in handy...


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lebenborn
post May 14 2010, 06:42 AM
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QUOTE (Dad2many @ May 14 2010, 06:26 AM) *
Yeah, I tried to get the jack stand in the pics because I was afraid someone might think I left it on the jack. ALWAYS use a stand, I just leave the jack for added measure. You don't want to trust the jack when your head will be well inside the wheel well.

lebeborn: have you noticed any clunking in the front end that feels like a worn rubber bushing?



no clunking yet, but i was told that sometimes it won't until its to late. could it be throwing abad signal too the abs pump if the hub was bad?

by the way nice, i will be using this if i have to change it out.


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04 Tahoe Z714x4 mods-K&N CAI,Ford Keys,1.5 rear spacers,17"OEMblack steel wheels,295/70/17 Nitto Terra Grapplers,window tint throughout,black bowtie,NorthFace emblems,Yakima Megawarrior cargo cage,smoked LED tail lights,R1 Concept rotors and pads
future mods-BB tune,flowmaster dual exhaust,lights front back and above.

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DanM64
post May 14 2010, 09:37 AM
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Good writeup!


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jake283618
post May 14 2010, 04:40 PM
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Great write exactly how I did it.


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WhiteAndGoldZ71
post May 14 2010, 08:07 PM
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so im pretty sure my hub on my passenger side is shot... i haven't jacked it up and shook the wheel yet but it squeaks real bad whenever there isn't alot of pressure on it... ( like when i turn into a driveway lower than the road etc.) so before i go buy part and take everything apart it sounds like a hub problem to everybody else right? im plannin on doing it tomorrow


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Dad2many
post May 14 2010, 08:19 PM
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Definetly sounds like the hub. The change in loading will make it show. Mine was a rise into the drive while braking, it would trip the ABS. Don't wait too long. I would recommend doing both sides not just one.

This post has been edited by Dad2many: May 14 2010, 08:20 PM
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WhiteAndGoldZ71
post May 14 2010, 08:23 PM
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i guess im doing both tomorrow then along with new 02 sensor, fuel pump and oil change shocks are coming next

ooo and i forgot new brakes on the front too... there goes some of my tax return... new keys on the front and 4.5 inch coils for the rear and 37's and it will all be gone


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WhiteAndGoldZ71
post May 16 2010, 12:59 PM
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i changed out the hub on boths sides and im still getting a squeak whenever the passenger side tire has less weight on it... any more ideas? im gonna grease it and im getting new shocks in a week or two so is there anything else you think i should try?


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JimB204
post May 16 2010, 08:56 PM
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i would take it apart and make sure everything was put back exactly right.

my passenger hub went out the other day while i was in VA for court. i took my moms TL and she was gonna drive my truck, well she took it to the shop without telling me and i wont say what she payed to get it fixed...lets just say i could have fixed the hub and probably gotten new shocks for the price she payed them. oh well, its all better and finally QUIET.


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rammie
post Jun 4 2010, 05:20 PM
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Nice write-up, so how do you know when the hub is going bad? I hear a squeal (sounds like a tire squeal) at low speed/sharp turning, especially when in a parking lot or making a u-turn. My tire pressure is around 32 psi, not sure if it is from the tires or something else?


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bprse99
post Nov 13 2010, 01:08 PM
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Does anyone know the torque specs for the three wheel bearing hub bolts? I'm ready to tackle this job after paying GM to do it after the left bearing failed. Seems like GM parts direct has the best OEM prices. Has anyone found any other sources for a quality replacement hub?

Thanks in advance for your help.

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Joe1129uscg
post Nov 13 2010, 02:32 PM
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QUOTE (bprse99 @ Nov 13 2010, 01:08 PM) *
Does anyone know the torque specs for the three wheel bearing hub bolts? I'm ready to tackle this job after paying GM to do it after the left bearing failed. Seems like GM parts direct has the best OEM prices. Has anyone found any other sources for a quality replacement hub?

Thanks in advance for your help.

Timken brand is what many people use, they sell it at Autozone.


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QUOTE (1badburb @ Dec, 17th 2011, HWY 114 & 35W)
"I don't drive like this all the time, I just know that you guys can appreciate the sound"
The "sound" 6.2 380HP full throttle w/K&N Intake, 7-10 runs in a 6 hour span...
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