Posted by Jeff B. on February 17, 2013 at 20:49:56 from (69.20.162.151):
In Reply to: GM Transfer Case posted by Christopher S. on February 17, 2013 at 17:08:23:
I work in a transmission parts warehouse, and I know all about what you have pictured there. The oil pump in the back of the case rocks back and forth in the lugs they sit in. After some time, they wear a small hole through the rear case half and start to leak oil. The case half is made of magnesium, therefore it can't be welded. There are several fixes for them. There is an aftermarket rear case half that is made of aluminum, and is much thicker in the area of the pump lugs. In the last year we've sold more than 200 of them. The case you have pictured there appears to have had a small steel plate installed that is one of the fixes. A better one is an item known as a BRNY, or barney as we call them, made by Adapt-A-Case out of Michigan, I believe. They have a website if you want to look at one. A company in Vermont, Sonnax, has another type of repair that is more expensive, but probably isn't any better than the barney. If the transfer case leaks for too long, it usually burns up all the parts inside from lack of oil, so anybody out there that has a GM product, keep an eye out for small leaks under your truck. If you need more info, e-mail me and I will give you our 800 number and you can call to learn more. Good luck, Jeff
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