Front differential leaking......I think

2010LTZ4x4 · March 15, 2015

I had a pretty full weekend with my truck starting Friday evening when I changed the motor oil and filter, and a couple hrs later noticed there oil was on the ground. After further inspection I was sure it was the engine cooler lines, so off to dealer the very next morning. Put the truck back up on the hoist here at home in my shop and changed out the oil cooler lines and the finally tranny cooler lines which I bought a while ago and never got around to doing them until yesterday when I was doing the oil cooler lines.

Thought everything was good that afternoon when I took the truck out for a drive, and got back to make sure the fluids were all good and again noticed oil on the ground .

Now what the heck is leaking, I looked around the oil pan and rear motor cover and its all dry, checked from the top and saw the top of the diff is soaked in really dirty oil. It cant be motor oil, everything else is dry and the motor oil is only a day old so it would be golden color. I've never changed the frt diff oil yet(was going to do it this summer) so maybe that's why its so dark looking and it seems to be coming right from the very top of the diff halves and running down every where. Been under the truck several times today wiping up the oil, as soon as I drive it and come back it starts to leak again.

I'm still covered under my 5 yr warranty till June so I think I'll take her in for this one, and let the dealer do something about it. This will be the first time since new that my truck has ever been into the dealer for anything.