I have a leak in my 2001 GMC Denali XL, 6.0 L, AWD, transfer case. My local mechanic replaced the rear transfer case seal as a 1st step. It still leaks. Do I have to replace the entire transfer case to fix the leak?
Country: United StatesMake: GMModel: Denali XLYear: 2001Engine: 6.0 L
Replaced the Rear Transfer Case Seal.
Hello, I'm Cam. Please include all the details about your issue so I can accurately advise you. I cannot see your vehicle so please be detailed.
Where int eh case is the leak at?
Apparantly at the rear drive shaft point in the transfer case.
Did they inspect the bushing in there/
how about the cap on the end of the slip yoke? I have replaced a couple for that.
How about the case vent?
I don't think so.
Actually to all three questions. I don't know what they did.
Can you find out?
I'll have to call them. It could take several minutes.
That wil be just find
They did inspect the bushing and the bearing. It wobbles around in there. They don't know which it is. the cap is completely dry at the u-joint. problem on the outside. They checked the case vent on top and it was clear and unobstructed. They think once you get into it and start taking everything apart, it's better to get a rebuilt transfer case with a 100K and 2-year warranty.
It depends. If only the rear housing is bad then change only that or the bushing in that. No reason to replace assembly for a small leak.
In their experience, when you try to replace a part or two, something else is likely to be bad, such as a slack chain, or something else will leak after putting it back together, or some other issue will come up. With a rebuilt unit, everything is like new. I have about 120k miles on the car.
That tells me they have no confidence and would rather spend more on your behalf.
Thank you, Cam. I will accept your answers, but go ahead and replace the transfer case.
GM Grand Master Technician 2007. 11 years experience.