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4x4 conversion on a 2001 Silverado 1500 5.3 V8 LS Ext. Cab

17K views 14 replies 8 participants last post by  davester3500  
Do you know if it has limited slip? Not sure which year RPO codes started but, G80 or G81 are what you are looking for (limited slip or posi trac respectively). RPO codes are usually inside the glove compartment. Also, lots of sand in the bed sure helps out in the snow!
 
http://www.sierragear.com/gm-rpo-axle-r ... n-codes-3/

This website refers to G80 as a "Axle Positraction, Limited Slip". Someone please correct me if I am wrong:

Open diff - one wheel power, usually one wheel spinning while stuck.
Limited slip - once slip occurs on one wheel, other wheel is engaged (clutch or gear based)thus two power wheels on same axle until traction(no slipping) is regained.
Locking diff - locking differential for power at both wheels of same axle electrically, pneumatically, or pull cable.

Just trying to educate myself a bit. Thanks.
 
19trax95 said:
In any gm TRUCK it's either a open diff or a locking diff (G80)

Gm CARS have a G80 as well which is a limited slip posi diff.

So if it's the stock diff it's either open or locking. Gm has never put a limited slip in a truck.

A lot of times people call the G80 in their trucks a posi or limited slip. And they are wrong. It's a true locking differential.
Awesome! Thanks for clearing that up for me, trax.