Front Diff leaks?

B2E2RUN · May 13, 2015

Anyone had this happen?

Short story long...

Took my truck in for it's first service a couple weeks ago (6100 miles). I noticed Saturday that there were spots on the driveway under it. Took a peek, noticed "drips" coming from the front skid plate, but filter and all looked clean. Made an appointment for them just to check it out. I figured the oil change guys just got sloppy and spilled oil all over the skid plates. Dropped it off yesterday, no more put my butt in a seat in the lounge when they came and got me. My front diff it leaking on both sides where the axels exit. I asked if they'd seen this before, his only response was "it's the first thing we've been checking lately on reports of oil leaks". I found this interesting!

I'm not too worried, the dealership has been great to me. Even gave me a brand spanking new '15 sierra as a loaner for the next few days. Just curious if anyone has seen this and has any more info.

TIA!

LongrangeLauber · May 13, 2015

Probably just replace the seals with updated seals if there is a recall/ tsb for it. Luckily I haven't seen anything of the sort. I wonder if it has something to do with synthetic gear fluid (shouldn't but you never know)

B2E2RUN · May 13, 2015

I just find it odd that is was leaking on both sides! Unless it was a faulty batch of them...

LongrangeLauber · May 13, 2015

Yeah definitely odd. Especially when the dealer tells you straight up about them checking those first when customers bring their trucks in stating an oil leak

20L8TSierra24 · May 14, 2015

Makes me want to go check mine as soon as I get out of work.

B2E2RUN · May 14, 2015

Mine was leaving spots on the ground, dripping from skid plate.

BigBadSierra · May 14, 2015

Make sure they check the input shafts diameters when they have it apart.

I had a 05 truck that kept leaking a few months after the new seals were put it.

Dealer put in three sets of seals before someone decided to check the shafts.

Turned out the shafts were out of spec. Once they replaced the shafts it never had an issue again.

B2E2RUN · May 14, 2015

Will do, thanks!

B2E2RUN · May 14, 2015

Update, they just called me. Said they replaced the seals. Also stated that there wasn't a gasket on the fill plug and that the plug was loose from the factory. Picking it up later, will report back if the paperwork has more info.