1996 Chevy Suburban Rear Axle Leak

CHEVROLET
Avatar
TLQWJMKB
  • MEMBER
  • 1 POST
I have a 1996 chevy Surburban 1500 with 120000 miles it is a 4x4 and the back is leaking something oily. It is a large circular thing that is in the middle of the rear axle. I am sorry that I do not know more. Can you tell me if this is a major problem or just a seal that is loose.
Jan 18, 2007 at 3:38 AM
Avatar
INDYUKE
  • ✓Experienced Mechanic
  • 416 POSTS
I believe you are talking about the rear differential. I would not drive the vehicle if you think there is a possibility that the fluid level may be too low.

Oftentimes a leak is only a bad cover seal. Your best bet is to crawl down there, place a wide tub you don't care about underneath to catch the fluid, and take off the rear cover. That's the best way to drain the fluid. It will come pouring out when you take it off. Inspect the differential case, the cover you removed and the gears for any damage.

Get a new seal for the cover, replace the cover, torque down the bolts and fill the differential with the proper amount of fluid. There should be a filler hole up near the top. If you have a limited slip differential, remember to get fluid rated for it. I hope this helps.
Jan 18, 2007 at 12:57 PM
🔧 Tools & Auto Repair Parts
Find automotive tools, diagnostic equipment, and replacement parts for your next repair.
Shop on Amazon →
Paid affiliate link. As an Amazon Associate, we earn from qualifying purchases.

Suggested Repair

Do not drive if the rear differential fluid may be low. Drain it by removing the cover into a catch pan, inspect the case, cover, and gears for damage, install a new cover seal, torque the bolts, and refill through the upper filler hole with the correct fluid, including limited-slip fluid if equipped.

Conversation Summary

The owner of a 1996 Chevrolet Suburban 1500 4x4 reported an oily leak from a large circular component in the middle of the rear axle. The expert identified it as the rear differential and advised against driving if the fluid level might be low. The recommended repair is to remove the cover to drain and inspect it, replace a likely bad cover seal, torque the bolts, and refill with the proper differential fluid.

Related Repair Questions

Add a reply
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.

Ask a new question

Frequently Asked Problems for This Vehicle