Jump to content

2002 Z71 Front axle bearing bad, HELP

larry arizona

Recommended Posts

larry arizona Enthusiast

larry arizona

Posted
Posted

2002 GMC Z71PU with 52k miles. Finally determined why my front axle was making a loud whinning noise while 4WD is engaged. Just started to act up thios winter. 4WD otherwise works fine.

 

The half shaft on the drivers side axle flange had quite a lot of slop. It appear to be the outer carrier bearing. Half shaft looks fine.

 

Couple of questions.

 

1) Local ring and pinion shop wants $550 to remove and put all new bearings in it and flush the differential and reinstall it. Is this a fair price?

 

I am capable of doing this myself. Looks fairly easy to drop the front axle.

 

2) Is there a good manual to guide me through rebuilding this front diff?

 

Thanks,

 

LA

biochemist Enthusiast

biochemist

Posted
Posted
2002 GMC Z71PU with 52k miles.  Finally determined why my front axle was making a loud whinning noise while 4WD is engaged. Just started to act up thios winter.  4WD otherwise works fine.

 

The half shaft on the drivers side axle flange had quite a lot of slop.  It appear to be the outer carrier bearing. Half shaft looks fine.

 

Couple of questions. 

 

1) Local ring and pinion shop wants $550 to remove and put all new bearings in it and flush the differential and reinstall it.  Is this a fair price?

 

I am capable of doing this myself. Looks fairly easy to drop the front axle.

 

2)  Is there a good manual to guide me through rebuilding this front diff?

 

Thanks,

 

LA

 

 

 

 

Hey LA, how loud are we talking here? I notice a bit of extra noise in 4hi, pretty quite though...can you hear this with windows rolled up? Did you notice any extra noise before you noticed the new noise? Is it really noticable? I know there have been recent posts on the forum about noise in 4Hi...all of us seem to hear a slight hum or growl in 4Hi...I have ran mine past a few dealers with all saying the same thing, all do it, normal. They said if it was bad YOU WOULD KNOW...cause it would be quite a bit louder than normal... I even took a new one 05 model...same noise. Anyway let us know, the general obervations are that there is more noise (growl, brakes-metal, howl etc...people have many names for the same noise I think :mad: ) when in 4Hi, and less noise in Auto...Is your noise different than what the rest of us hear, louder etc...? Let us know, thanks, later, :D:flag::devil:

REDZ-71 Enthusiast

REDZ-71

Posted
Posted

If you decide to rebuilt it, I can sell you my spare front differential for $550. It would be easier to replace the hole thing than to take it apart to rebuilt.

I swamped my front diff. which has a 3.73 gear for a 4.88 gear differential.

It is a compleat unit, it only has 36000 miles on it.

Let me know if you are interested.

larry arizona Enthusiast

larry arizona

Posted
  • Author
Posted

Bio,

 

The hum is pretty loud. You can hear with windows down or up.

 

Not a vibe just a gear whine or hum. It is not normal because my 02 Z71Tahoe is whisper quiet compared to this.

 

I found a used front diff for $450 with 3000 miles on it at the local GM scrap yard ith a 12 month 12K mile warranty?

 

Might jump on that.

biochemist Enthusiast

biochemist

Posted
Posted
Bio,

 

The hum is pretty loud.  You can hear with windows down or up.

 

Not a vibe just a gear whine or hum.  It is not normal because my 02 Z71Tahoe is whisper quiet compared to this.

 

I found a used front diff for $450 with 3000 miles on it at the local GM scrap yard ith a 12 month 12K mile warranty?

 

Might jump on that.

 

 

 

OK, I know a lot of us hear a growl or something? but I guess yours is different and louder. You are hearing something different than what me and others have observed...But as far as not hearing it in your Tahoe...that is common also. It seems that most hear it in the truck but not the tahoe...or blazer...not sure why, must be the insulation or position of the components...anyway must be pretty loud to hear it with the windows down? Most say they (you have read the recent posts I would guess) can hear theirs a bit with everything off and the windows up...I think that is normal. Thanks for the clairification let us know what you end up doing and what the final diagnosis is after you get everything done, later, :mad::flag::devil:

Archived

This topic is now archived and is closed to further replies.

Go to topic listing

  • Recently Browsing   0 members

    • No registered users viewing this page.

  • Forum Statistics

    250.4k
    Total Topics
    2.7m
    Total Posts

  • Member Statistics

    342,835
    Total Members
    8,960
    Most Online
    ballencd
    Newest Member
    ballencd
    Joined

  • Who's Online   3 Members, 1 Anonymous, 664 Guests (See full list)

  • Latest Articles

  • Posts

    • mark249
      Help purchasing a touch screen digitizer

      By mark249 · Posted

      Brought my 2015 Colorado into the dealership to check my touch screen issues, had that ghost touch thing happening. They said I needed a new touch screen and they could either order me one for $500. The lady at the service deck was nice enough to tell me I could order a touch screen online for less, she did stipulate that the touch screen had to be factory OEM, you can't pair an aftermarket screen to my radio seeing it was 2015, it had to be a GM factory OEM only. I found a few on Amazon and Ebay by the numbers on the back of the old screen, DJ080PA-01A GM# 22740886, Some said "OEM" in the description and others just said "Replacement". Would a replacement be the same as a OEM as long as it had the same numbers on the back of the screen? In some of the descriptions they also show different brand names but same numbers, is that an issue?  
    • Donstar
      Navigating senior years.

      By Donstar · Posted

      I have both but typically use the 4 legged walker (wheels on front, ski's on back).   The four wheeler is starting to be used on "longer" outdoor walks.  The 4 legged walker is particularly helpful in practicing good walking posture.  Both of my knees are at different stages of recovery and I'm trying to not develop poor habits.  I can actually manage with a cane but it's very difficult not to favor one leg over the other.  My PT recommends I continue with my 4 legged walker for a while.  Yesterday was four weeks since my last knee replacement and I'm excited about my progress to date.  It has been a hell of a rough journey so far but it is exciting to witness  systematic and continuous improvement.  I went for years watching the decline of my "mobility".  It seems that everyday now I am alerting my wife to something I can do now that I couldn't a day or two ago!  I encourage anyone facing the prospect of knee replacement to share any concerns with others who have had the surgery.  It isn't an instant fix but rather is a considerable amount of short term pain for long term gain.  Recovery time and pain levels vary for individuals post surgery but the end results are typically very positive and I've never encountered anyone regretting having had the surgery. 
    • diyer2
      AFM Disabler Question

      By diyer2 · Posted

      The lifter issue can be dealt with by shorter oil changes and quality oil IMO.
    • diyer2
      Winter Returned

      By diyer2 · Posted

      Got heavy rain, hail and light rain yesterday. 
    • Core-Lokt
      Wiring Help, Please

      By Core-Lokt · Posted

      I'm putting in an A-pillar pod/gauges, and I'm asking if anybody can identify a (preferably) fuse for a switched power and illumination circuit on the driver's side interior fuse panel. Offhand, everything I checked with a test light was constant-hot, and I'd much rather uses a piggyback fuse. I can certainly find a wire, but I'd rather not half-tap.   Thanks in advance for any help.

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...