Locking Rear Diff

By gmz71
November 27, 2007 in Ask A GM Technician

Recommended Posts

gmz71

Posted November 27, 2007

I have a 2000 NBS. My rear diff does not want to lock properly. When my rear wheel starts to spin, it tries to engage but make a really bad clunking noise and starts to "wheel hop". I changed the gear oil to Mobil 1 syn. but it did not make any difference. Rear ends functions just fine other than this problem.

Any ideas?

skills4lou

Posted November 28, 2007

Is it the G80 locker?

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

342,842
Total Members

8,960
Most Online

Newest Member
CaptainDad
Joined 6 hours ago
Who's Online 12 Members, 1 Anonymous, 616 Guests (See full list)
- davester
- Coastie05
- Black02Silverado
- PhilB
- RAYS B4U
- Rick_
- KARNUT
- taze
- rjgvt
- Prong
- lowrider
- TrueBlue

Latest Articles
- Hummer Turns 25 and GMC Brought the H2’s Yellow Back
  Wednesday at 06:04 PM
- What’s New for the 2027 GMC Yukon and Yukon XL
  July 13
- Got a “Service Door Latch” Alert? Fix It in a Minute
  July 9
- GM Recalls Cadillac VISTIQ Over Power-Folding Seats
  July 8
Posts
- Transmission temperature 10speed with 3.0 LZO Duramax
  
  By Rick_ · Posted 13 minutes ago
  
  Installed the PPE bypass on the RST last week. With ambient temps between 75-95, the trans temp dropped from 195-198 unloaded to between 180-185. Not what I was expecting (also has the Max Trailering package). I have a Nextgen diesel valve body upgrade kit going in this week and the remaining thermostat in the pressure regulator valve will be removed and I'll see what happens. I did the same mod in the Valve body upgrade kit for my '24 3500 HD Duramax and I haven't seen much difference in trans temp but I've just been running back and forth to town so far.
- Different requirements for oil filters?
  
  By Black02Silverado · Posted 13 minutes ago
  
  It's going to last a long time. You seem to take care of your vehicles and that is key. I wish I kept my 2002 Silverado. These new vehicles are not built with quality anymore.
- Auto start stop disable
  
  By kr477 · Posted 36 minutes ago
  
  2022 Refresh LTZ with the console - I put a 4D tech Start/stop eliminator in the truck a week ago and it works great. Yes there are a number of panels you need to take off to get access but its not that hard to do. Figure I spent about 1-1/2 hrs doing the truck and another 10 minutes installing one in the wifes car - that had easy access.
- Forward collision and lane keep assist still a problem on 2022 refresh?
  
  By kr477 · Posted 43 minutes ago
  
  Did they do this TSB from the post above? New updated program required to get this running is #PIT6504 dated Apr 1 , 2026. Appears the applications cover numerous Chevy and GMC vehicles with fwd col, AEB, and LKA options. Hopefully this helps someone out in the future with these issues.
- Shopping for new truck and have question.
  
  By KARNUT · Posted 1 hour ago
  
  I’ve bought a few vehicles from people I know that took great care of them. My Ridgeline is the most recent. 160K miles for 7K. Right at market value. A cream puff. At 200K miles it will need a minimum of 5K in maintenance. Grumpy just put a few dollars in his Reg Cap truck. Another cream puff. You’re still rolling the dice at those miles. I’ll hit the same milestone with the Odyssey in about two years. I like that you can use a service that tracks use vehicles for maintenance. Do you roll the dice or spend a little more get a lower mileage one with the maintenance already done. Spend 15K on a 100K mileage vehicle after maintenance done or spend 5K on one at 200K that’s 15 years old.
GM-Trucks.com Clubs
- Black Truck Club
  
  Open Club · 612 members
- White Truck Club
  
  Open Club · 380 members
- Canadian Owners Club
  
  Open Club · 282 members
- Red Truck Club
  
  Open Club · 157 members
- diesel 3.0
  
  Open Club · 281 members
- Texas Owner's Group
  
  Open Club · 371 members
- NorthSky Blue Club
  
  Open Club · 118 members
- Midwest Owner's Group
  
  Open Club · 213 members
- 2015 Custom Sport Club
  
  Open Club · 5 members
- GM Snow Plowing Club HD
  
  Closed Club · 14 members
Popular Contributors
- Week
- Month
- Year
- All Time
1. 1
  
  Grumpy Bear
  20
2. 2
  
  Chuck FB
  17
3. 3
  
  newdude
  16
4. 4
  
  CamGTP
  10
5. 5
  
  txab
  10
Show More