Rear Diff replacement

WFMDFM

MEMBER
CHEVROLET SUBURBAN

I have a 2001 Suburban 5.3l 1500 4wd. At 159K I needed to replace the rear axle(loud griding and would not move unless in 4wd). At 163K I am experiancing the same issue. The diff that went in was used with 65K on it. Is there a history of these failing? I do tow a trailer from time to time but would think that this machine should handle it. The ratio is 3.73 am I able to change it and would that help? Other than this issue this has been a great car with little trouble from day one.

Saturday, July 28th, 2007 AT 6:45 AM

2 Replies

KD202

MEMBER
5 POSTS

Unfortunately my diff on our 03 Suburban Z71 went out at 56k. It was 600 to fix, I have found this is a prob and reported to NHTSA. Others had the same issues, sorry for your probs :(

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Sunday, July 29th, 2007 AT 2:18 PM

CHRIS_KOLAR

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10 POSTS

I have noticed that on my rearend failure happened after I changed a tire. It was damaged and the set had 20k on them. The new tire was the same type but new. 5k later the rear end is broken. I believe the tire size difference however small was just enough to overheat the lube and cause a failure.

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Saturday, August 4th, 2007 AT 3:12 AM