[NoMoGMPG]

Originally posted by HummBebe:
I might need someone to verify before I go forward....


I spoke with a very knowledgable person at the Salt Lake Hummer Dealer. He said the first thing I need to do if I am going to keep wheeling like this is to replace my front and rear ring and pinion gears with Yukons (as in GM). He said either 488's or 513's. If this pans out.....we could have a fix.

F5fstop.....can you verify?

Bebe,
It was very clear to me that crawl ratio is not the issue here, it is gear material strength. It appears that the gears are too brittle for high impact driving, so the 'fix' would be a stronger material. As an example, the ring and pinion gears used in a 200 HP S10 Blazer 7.625" differential are exactly identical physically to an SS Camaro LS1 with 330 HP. The difference is that the Camaro gears are made for high impact driving. They are made to absorb the shock by being more resilient.

I would venture to say that GM will probably come out with a different material replacement R&P for vehicles with your 'symptoms'.