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Old 09-26-2007, 06:55 PM   #1
chuckster
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Default Replacing a front Wheel Bearing/Hub on my 2001 Tahoe this weekend.. Need Info

It's a 2 wheel drive Tahoe. Grinding sound from drivers side, increases with speed.. not the brakes.


What I need is the Bolt sizes so Imake sure I have the right tools...

There are 3 bolts that hold it to the spindle..What other extra large size bolts do I need to be aware of? What size and type are they? Any gotchas or just straight forward?
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Old 09-26-2007, 07:18 PM   #2
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Bolt sizes or socket sizes?

10, 13, 15, 18, 19, 21 (or 13/16)mm sockets will take off just about everything on a GM car.
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Old 09-26-2007, 07:41 PM   #3
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Quote:
Originally Posted by ddecart View Post
Bolt sizes or socket sizes?

10, 13, 15, 18, 19, 21 (or 13/16)mm sockets will take off just about everything on a GM car.
Someone on a tahoe forum mentioned something large like 1 3/4" But I think they may have been referring to the hub nut only found on the 4 wheel drive model..
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Old 09-26-2007, 07:44 PM   #4
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Quote:
Originally Posted by chuckster View Post
Someone on a tahoe forum mentioned something large like 1 3/4" But I think they may have been referring to the hub nut only found on the 4 wheel drive model..
Yeah it's either that or something like 32,34 or 36 mm (I can't remember).

I've never done a hub replacement on a 2WD model. Not too many of those in the snow states.
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Old 09-26-2007, 07:44 PM   #5
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Are you positive its not the little wear indicator on your brake pads.

The noise they make is very similar.
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Old 09-26-2007, 07:51 PM   #6
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Quote:
Originally Posted by C5Nate View Post
Are you positive its not the little wear indicator on your brake pads.

The noise they make is very similar.
Postitive.. It's a very similar feel and sound to when a brake pad is totally gone and its metal on metal grinding sound..

Like Cshhhhhh..Cshhhhhh...Cshhhhhh...Cshhhhhh that gets faster as I drive and slower when I slow down.. BUT... NO change in sound hitting the brakes..and gets worse turning.. I wish it were the pads...
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Old 09-26-2007, 07:52 PM   #7
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Quote:
Originally Posted by 72 stingray owner View Post
Yeah it's either that or something like 32,34 or 36 mm (I can't remember).

I've never done a hub replacement on a 2WD model. Not too many of those in the snow states.
Luckily I am only 2 wheel drive.. no worries..
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Old 09-26-2007, 08:35 PM   #8
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You'll need a 5mm allen socket to remove the ABS sensor from the hub unless you have a new bearing cartridge that includes the sensor and pigtail. Some come with it (Genuine GM), some don't.
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Old 09-26-2007, 09:06 PM   #9
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Quote:
Originally Posted by chuckster View Post
Postitive.. It's a very similar feel and sound to when a brake pad is totally gone and its metal on metal grinding sound..

Like Cshhhhhh..Cshhhhhh...Cshhhhhh...Cshhhhhh that gets faster as I drive and slower when I slow down.. BUT... NO change in sound hitting the brakes..and gets worse turning.. I wish it were the pads...
if its louder on a left turn.... it's the right side hub
if its louder on a right turn.... it's the left side hub

2wd is very easy... one Beer job.... 2 beers if you take your time!!
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Old 09-26-2007, 11:34 PM   #10
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Quote:
Originally Posted by jcswm View Post
if its louder on a left turn.... it's the right side hub
if its louder on a right turn.... it's the left side hub

2wd is very easy... one Beer job.... 2 beers if you take your time!!
Just jacked up each side tonight.. Its the driver side...

If I shake the wheel from top and bottom.. It's loose... and spins noisily..

The Passenger side is tight and smooth...

Looks like I know what I will be doing Saturday...
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Old 09-26-2007, 11:48 PM   #11
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WOW.... your lucky!!! they've come WAY down in price
Advance and Discount both have them under $150.00
last one I did was over $400.00!!!
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Old 09-26-2007, 11:54 PM   #12
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I know some of those are bolted in with a negative torx socket
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Old 09-27-2007, 12:23 AM   #13
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Quote:
Originally Posted by jcswm View Post
WOW.... your lucky!!! they've come WAY down in price
Advance and Discount both have them under $150.00
last one I did was over $400.00!!!

Autozone... $144!!!
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Old 09-27-2007, 12:24 AM   #14
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Quote:
Originally Posted by AZ Z51 View Post
I know some of those are bolted in with a negative torx socket
That is what my original post is about. I dont want to get a surprise.. I am pretty sure the calipers have a huge torx bolt but not sure about the Spindle..
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Old 09-27-2007, 12:35 PM   #15
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Calipers have a T55 TORX. You'll need a BIG breaker bar for them and the caliper bracket bolts. They're put on by Superman at the factory.
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Old 09-28-2007, 09:57 AM   #16
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Quote:
Originally Posted by chuckster View Post
That is what my original post is about. I dont want to get a surprise.. I am pretty sure the calipers have a huge torx bolt but not sure about the Spindle..
you should be able to look at the back side of the spindle and see whats holding in the bearing with out taking it all apart.
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Old 09-28-2007, 10:09 AM   #17
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Quote:
Originally Posted by jcswm View Post
WOW.... your lucky!!! they've come WAY down in price
Advance and Discount both have them under $150.00
last one I did was over $400.00!!!

yup, i paid a fortune too on my 2001 yukon. came as a whole 'assembly'.


it was causing my ABS to engage all the time as i came to a stop !!


cant help ya on the nut sizes....mechanic did it for me
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Old 09-28-2007, 10:18 AM   #18
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I've never seen a 1 3/4" bolt on a regular car, a coal strip mining dump truck yes, Tahoe, no.
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Old 09-28-2007, 10:36 AM   #19
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Quote:
Originally Posted by Son93SL2 View Post
I've never seen a 1 3/4" bolt on a regular car, a coal strip mining dump truck yes, Tahoe, no.
the axel nut is pretty damn big
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Old 09-28-2007, 11:13 AM   #20
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Just a guess- is this thing a Unit Bearing? Three ~1/2" (or metric equiv) twelve point bolts that hold it on to the knuckle?

If so, pull caliper, 36mm socket for spindle, pull spindle, then the three 12 pt bolts for unit bearing, then BFH to remove unit bearing, reverse to replace.

If it's not a unit bearing, forget everything I just typed........
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Old 09-28-2007, 11:13 AM
 
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