ZBass28

I bought my truck used and the original window sticker was not with the vehicle, nor was there an option sheet.

Is there a code in the gloevbox that will tell me if the truck has a locking differential?

Other than just being curious, I have been wondering because I notice that when the truck loses traction and then regains it, the rear end makes a hell of a clunk/thud sound that just doesn't sound normal to me.

Vehicle is a 2000 Silverado 1500 Z71, 5.3, 3.73, reg. cab

Thanks
Tom

GREGGO

iTrader: (2)

Check the glove box for a code for G80, that is the code for a limited slip.

Ryan23silverado

iTrader: (1)

do a burnout. One line=no posi Two line=posi <img src="gr_grin.gif" border="0"> Just Joking, yeah check for G80 code.

ZBass28

I definitely already knew that the truck was limited slip (posi), for some reason I thought there was a separate locking differential option.
Not the case?

Trevor @ Texas Speed & Perf.

iTrader: (3)

[quote]I definitely already knew that the truck was limited slip (posi), for some reason I thought there was a separate locking differential option.<hr></blockquote>

Limited slip and locking differential are different terms that refer to the same thing. posi, limited slip, saf-t-track, locker, etc. The only way you can lock things up more than a posi is with a spool. <img src="gr_grin.gif" border="0"> It will keep both axles spinning ALL of the time. <img src="graemlins/burnout.gif" border="0" alt="[Burnout]" />

ZBass28

[quote]Originally posted by Trevor D:
<strong>

Limited slip and locking differential are different terms that refer to the same thing. posi, limited slip, saf-t-track, locker, etc. The only way you can lock things up more than a posi is with a spool. <img src="gr_grin.gif" border="0"> It will keep both axles spinning ALL of the time. <img src="graemlins/burnout.gif" border="0" alt="[Burnout]" /> </strong><hr></blockquote>

Actually, that isn't entirely correct...limited slips and locking diffs are different in operation.

For instance, the S-10 ZR2 trucks (and other GM trucks including Silverado) use something that is called a locking rear differential that is termed the Eaton Gov-Loc. It's basically a combination of traditional limited slip AND mechanical locker.

When one wheel slips, the clutches engage and then trigger a mechanical system that SOLIDLY locks the 2 axles together. In this manner, it prevents one wheel from spinning faster than the other. This system will disengage the lock when torque stops being applied to the pinion. It's not like a conventional locker in that:

* they are always unlocked, and the outside wheel on a turn is always getting the power.

* It has to be able to sense wheelspin so that it can lock when one wheel spins faster than the other.

* It will only let one wheel spin before it engages the mechanism.

What I have learned though is that they tend to respond harshly when they do lock, especially when spinning around a turn. So I guess I have answered my own question then, which originally was to find out why I got such a harsh BANG when I would lose traction and then regain it. Seems to be a characteristic of the Eaton type system.

[ March 09, 2002: Message edited by: ZBass28 ]</p>

Trevor @ Texas Speed & Perf.

iTrader: (3)

I never said that they operated in the same manner. My point was that they all do the same thing and that's spin both tires when the need arises. <img src="graemlins/burnout.gif" border="0" alt="[Burnout]" />
That's the most detailed response I've ever seen from someone to answer their own question. <img src="gr_images/icons/wink.gif" border="0"> <img src="gr_tounge.gif" border="0">