Recent Topics
My wife is wanting a new car
by MParr
07/22/18 07:46 PM
Oil choices
by charmer37
07/22/18 07:22 PM
Lifeguard 8 and Audi 8hp55
by seanf
07/22/18 06:44 PM
2008 Tahoe loses power - electrical problem
by pacem
07/22/18 06:36 PM
How to clean wood trim?
by MajorCavalry
07/22/18 05:39 PM
Rotella T6 5w40 $12.97 after rebate
by dmiko
07/22/18 04:30 PM
Drivers not turning left with green light
by Mr Nice
07/22/18 04:25 PM
Someone hit my car
by Dylan1303
07/22/18 04:15 PM
Which spark plugs for 92 Olds 88?
by atikovi
07/22/18 02:54 PM
Electronic spark doesn't work on gas stove
by JLawrence08648
07/22/18 02:46 PM
Doorbell Button Bulb
by Yah-Tah-Hey
07/22/18 02:07 PM
AC/Blendoor Problem
by SilverFusion2010
07/22/18 01:53 PM
Suzuki 2.7L idle noise
by FlyPenFly
07/22/18 01:52 PM
TSC Rotella...YIKES!
by Greg L
07/22/18 01:48 PM
New Hampshire Speedway
by Warstud
07/22/18 01:13 PM
Tree growing from stump?
by edwardh1
07/22/18 01:02 PM
Kingquad hard shifting
by jay929
07/22/18 10:58 AM
CVT transmissions
by Gito
07/22/18 10:31 AM
sunday newspaper paper price increase $2 to $3
by edwardh1
07/22/18 10:08 AM
Tomatos and peppers
by Quattro Pete
07/22/18 10:02 AM
Newest Members
motogp46, Kyle0651, cavisco, firefox87, wiliweld
65534 Registered Users
Who's Online
75 registered (4WD, 2015_PSD, AlaskaMike, AnonOIl, 9 invisible), 1608 Guests and 26 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
65534 Members
67 Forums
287492 Topics
4795908 Posts

Max Online: 3590 @ 01/24/17 08:07 PM
Donate to BITOG
Topic Options
#4808474 - 07/08/18 03:55 PM 2014 Silverado differential change
04SE Offline

Registered: 05/04/07
Posts: 927
Loc: IL
I changed the front and rear differential fluid in my truck today. The truck has 48,000 miles and the rear fluid came out a dark golden brown and it smelled of grapes and diff lube, quite the combination of smells. The magnet in the bottom of the differential housing had more goop/fuzz than I expected but nothing big enough to actually see with the naked eye. I re-siliconed the magnet in place and let it dry as well. I cleaned/scrubbed the cover in our parts washer and flushed out the housing with brake clean. GM was nice enough to use a reusable gasket.

The front was easy as GM was nice enough to put a drain and fill plug. The fluid that drained out was thick and almost gray. I am guessing they didn't put a synthetic up front.

I refilled both with Mobil 1 75w90. I figure they are easily good for another 50k. I very rarely tow and most miles are commuting or vacation.
Life's little problems can be solved with a shovel and silence.

#4808485 - 07/08/18 04:25 PM Re: 2014 Silverado differential change [Re: 04SE]
Snagglefoot Offline

Registered: 12/31/17
Posts: 1911
Loc: SE British Columbia, Canada
Yes, GM often specs conventional fluid for the front diff as they expect it won't be used as much as the back diff; trying to save you 10 bucks. I've seen that severe service sometimes specs synthetic. I have synthetic in the front and rear diff as you have done. Good job!

#4808727 - 07/08/18 10:44 PM Re: 2014 Silverado differential change [Re: 04SE]
CapitalTruck Offline

Registered: 01/13/13
Posts: 493
Loc: Washington, DC
I put 75w90 synthetic up front is mine as well as there is a TSB that advises to use it for really cold weather.
2013 Silverado 4.8L VVT 4x4 97k mi - ACDelco Dexos Full Synthetic 5w30 (ExxonMobil variant), ACDelco PF48E