Just drove my 98 sub k1500 out home to NW Il last night. Didn't notice
anything wrong but today while cleaning the slop and mess out of the garage
found a big puddle of differential fluid. Started looking at the diffs and
didn't see anything leaking at the axles or the shafts. Peeked under the
hood and fluid is all up the side of the radiator, on top of the splash
guard, on top of steering gear etc, but I can't see anything from where it's
coming from. It's going in to the shop tomorrow but wondering if anyone has
I'm going to take an educated guess that it will turn out
to either be the left front axle seal....or possibly the
vent. It's not un-common for both to leak....usually
the vent will really throw fluid all over the place, especially
if it comes right out. There is a bulletin kicking around
somewhere, I can't find it at the moment, but the advice
is to remove the vent, clean it up, and wrap the threads
of the vent with teflon tape in order to provide a bit
of a locking action to the threads when it's re-installed.
Thanks, I'm kinda thinkin' along these lines too. I couldn't see any traces
around the usual suspects, axles, shaft, etc, it just looks like someone
puked diff. fluid up and over the top. Also conditions were similar. VERY
cold start in hotel and only 1/4 mile to freeway. I nursed it but....you
know chicago drivers. Anyway I kept speed down but meanwhile while it had
been parked the wind and snow were howling and the there had been freezing
rain prior to temp plummeting to something below zero (around -5). I'll
check my mitchell on demand for a pub on it too. but thanks for the input
guys I think my theory jives with yours. While it's in I'm going to have the
dealer go through it for me flush trans, diffs, and transfer case. It's too
blasted cold and filthy to crawl around in my garage and I want to establish
a good relationship with the local dealer (you never know when you'll need
an ally) and they seem to be very good people. If this happened in less
sloppy weather I'd do it but I just don't care to or have the time.
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