differential Carrier (spider) gear

JBRAC121212

Original poster
Member
Nov 20, 2023
3
ohio
Hi , I would like to know where i can buy carrier spider gear kit for my envoy. Its a Envoy 2006 4x4 SLT GU6 differntial , i dont know if is a possi traction. Label in the compartment box say GU6. ANY HELP IS VERY WELCOME.THANKS
 

azswiss

Member
May 23, 2021
853
Tempe, AZ
GU6 is for the 3.42 rear axle ratio. As for posi rear ends, there are several RPO's:

G76 : POSITRACTION REAR
G80 : AXLE POSITRACTION, LIMITED SLIP
G81 : POSITRACTION REAR AXLE
 

Mooseman

Moderator
Dec 4, 2011
25,177
Ottawa, ON
Which engine? Short or long wheelbase? Reason I'm asking is because that will determine if you have a 8.0" or 8.6" diff. 8.6 parts are readily available, not so with the 8.0. In any case, you could try Yukon Gear.

Gearing RPO codes
 
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mrrsm

Lifetime VIP Donor
Supporting Donor
Member
Oct 22, 2015
7,585
Tampa Bay Area
Does your internal "Pumpkin" layout look anything like THIS 2006 Envoy's? The Comments listed below the video are also worth noting:

 

Mooseman

Moderator
Dec 4, 2011
25,177
Ottawa, ON
So if it's a short wheelbase, it's an 8.0. Regardless, these gears are fairly expensive. Might be worth a trip to a pick-n-pull to find a good used set of gears. You can also tell if it's a fairly flat cover with no hump to clear the gear, like the one in the above video.

Are your gears bad?
 

mrrsm

Lifetime VIP Donor
Supporting Donor
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Oct 22, 2015
7,585
Tampa Bay Area
...or are you just trying to install a GM Eaton G-80 M-Locker to replace the present OEM one?
 

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