I just did mine last week. I got 146k miles on my 2010 GMC. It was my dad’s truck. I bought it from my mother when my dad passed. I don’t think he’s ever serviced it and he used to haul a big trailer with 3 slide outs. I was terrified to pull the cover. To my surprise, the rear differential was spotless. Oil was dark and a bit smelly, but no glitter and hardly any build up on the magnet. The front differential,.. that one had some wicked stalagmites on the magnet. Got the transfer case while I was there. Filled them all up with AMSOIL products and she’s a happy truck. High miles and 14yrs old and purs like she just came off the lot. My dad and I both always change out the oil every 3k miles and only use top tier synthetic oils. I replaced the valve covers because I just a sicko that replaces things that ain’t broke to begin with. The valleys were spotless. Should be, the oil comes out pretty clean every 3k and never any loss through the combustion chamber.😂😂😂😂
That's Awesome you are able to hang on to such a nice truck. Starting with the GMC platform alone puts you ahead of the game. It goes to show how good maintenance practices can pay off.
Great video man. I picked up an 06 rado z71 ccsb with 125k on the dash and been doing preventative maintenance on it. This is my dream truck. First gmt800 and little stuff like this goes along way. Thank you for the easy tutorial
GM says "The proper level for the1500 Series is from 5/8" to 1 5/8" {15-40mm} below the bottom of the filler plug hole" "The proper level or the 1500HD Series, 2500 Series and 2500HD Series with 6.0L, is 0- 1/2" below bottom of filler plug hole."
No need to remove the fill plug until you are ready to add fluid. The rear differential is equipped with a vent from the factory. This keeps the unit from building pressure. Thanks for watching.
Thank you for watching my video. I am just starting out with the videoing as you may have noticed. I too agree that the volume is not of studio quality and have found it difficult to hear while filming outdoors. I am working on trying to get a good microphone setup. Can you recommend one? Thanks
I just did mine last week. I got 146k miles on my 2010 GMC. It was my dad’s truck. I bought it from my mother when my dad passed. I don’t think he’s ever serviced it and he used to haul a big trailer with 3 slide outs. I was terrified to pull the cover. To my surprise, the rear differential was spotless. Oil was dark and a bit smelly, but no glitter and hardly any build up on the magnet. The front differential,.. that one had some wicked stalagmites on the magnet. Got the transfer case while I was there. Filled them all up with AMSOIL products and she’s a happy truck. High miles and 14yrs old and purs like she just came off the lot. My dad and I both always change out the oil every 3k miles and only use top tier synthetic oils. I replaced the valve covers because I just a sicko that replaces things that ain’t broke to begin with. The valleys were spotless. Should be, the oil comes out pretty clean every 3k and never any loss through the combustion chamber.😂😂😂😂
That's Awesome you are able to hang on to such a nice truck. Starting with the GMC platform alone puts you ahead of the game. It goes to show how good maintenance practices can pay off.
Great video man. I picked up an 06 rado z71 ccsb with 125k on the dash and been doing preventative maintenance on it. This is my dream truck. First gmt800 and little stuff like this goes along way. Thank you for the easy tutorial
Fill plug is actually in front of diff on right hand side . The diff cover with fill plug may be factory or may not be .
GM says "The proper level for the1500 Series is from 5/8" to 1 5/8" {15-40mm} below the bottom of the filler plug hole"
"The proper level or the 1500HD Series, 2500 Series and 2500HD Series with 6.0L, is 0- 1/2" below bottom of filler plug hole."
Thanks for sharing
Wonder why the fill level is different and how can you tell if it is 5/8 below the fill hole, All I've seen is right to the bottom of the fill hole
People never use a blade to clean it. If you score it, it will leak! Use a plastic scraper
That’s only with aluminum surfaces
You remove the fill plug first for obvious reasons or you might have a bad day
No need to remove the fill plug until you are ready to add fluid. The rear differential is equipped with a vent from the factory. This keeps the unit from building pressure. Thanks for watching.
@@FreeAutoMechanic it’s to make sure it’s not seized or you’ll have an inoperable truck
@@alw6589 Thanks for watching.
100% accurate. That would be a nightmare not being able to remove that plug after draining the old oil!
@@tylermcelwain Its not that big of a deal its called going to oreillys and getting a new diff cover lmfao
Great video, explained everything well.
Thanks!
Why did you add oil then drain it through the same hole?
The fluid is full once it gets to height of the fill hole. Any extra may be allowed to drain so that it isn't overfilled. Thanks for watching!
Awesome
Thanks!
How many quarts of diff fluid did you end up using?
Just under 3 qts. Thanks for watching!
Update on the leaks ?
No leaks, working great. Thanks for watching!
Cant hear nothing he says, terrible presentation
Thank you for watching my video. I am just starting out with the videoing as you may have noticed. I too agree that the volume is not of studio quality and have found it difficult to hear while filming outdoors. I am working on trying to get a good microphone setup. Can you recommend one? Thanks
You should get the idea with visuals. 1) Unbolt cover and drain. 2) Clean mating surface. 3) Seal 4) Bolt back on 4) Refill.