rear axle codes

bunky

Junior Member
where can you find rear axle codes on the internet i have a 3/4 ton chevy 4x4 and i am looking for a website that has the codes
 

MTCK

Senior Member
Location
Fairbanks AK
I don't know of a web site that lists the codes, but you can tell pretty much anything you want to about the axle by looking at a few things. You said that it is a 3/4 ton, which would make me think it has one of two axle assemblies, either a 10.5" ring gear full floating 14 bolt, or a 9.5" semi floating design. If it is a 6 lug 3/4 ton found on some newer rigs, it's the 9.5". You can tell by taking off a hub cap or wheel and seeing if the hub portrudes outside of the break drum. This is a full floating one if it does. The full floater also has a more angular diff cover, with a dip on the right hand side of it, while the semi floater is more rounded. You can find your axle ration by taking off the diff cover, and dividing the number of teeth on the ring by the number on the pinion. Good luck.
 

John DiMartino

PlowSite.com Veteran
Location
Walden,NY
The codes are gu6,3.42 /gt4 3.73 /gt5 ,4.11. They are in the glove box if you can still read them,next to the camper loading decal.<p>----------<br>John D<br>
 

Bill c

PlowSite.com Veteran
Location
ny
I have an 85 chevy and was wondering what gears it had.The label in the glove box says gu2.Any info would be appreciated.
 

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