On my 09 Silverado, it doesn't indicate that it has a g80 but it pulls both rear wheels while spinning. Is there another rpo for a limited slip or am i goin crazy?

 

Look inside your glove box for the codes....

Actually, on my breakdown of RPO codes, G80 reads "Axle Positraction Limited Slip"

When I ran my VIN on GM VIS it came up as G80 / Locking Differential- Rear Axle.

My guess is that GM's version is just another name for limited slip, not a true locker.

 

No, they're lockers...just not very good ones. There's a small pin that locks the gears together, which is what shears when the G80 blows. lol

This fall I will probably be swapping mine over to a true trac.

 

Get the True Trac....

 

My glove box does not include g80, but it does indeed pull both rear wheels....do they use another rpo now???

 

The rear is noted with a Gxx RPO code. What Gxx codes do you have listed?

 

G80 is the locking diff RPO.
GT4 is 3.73 gears
GT5 is 4.11

 

G80 is GM's code for a limited slip rear axle.

Weather thats a locking diff or a clutch style or anything else they used to Limit the amount of slip between the wheels....hence Limited slip.

F-bodies got the G80 code and came with a clutch style LSD for example.

 

Not that it is used in our trucks, but one that is used in other GM applications for limited slip's is G86.

A handy site for looking up any RPO Code is: http://www.rpocodes.com/

 

Not 100% on this one...but I believe it was an option only in FF 14-bolt rears. Again, I am not 100% sure on this.