Newb here to the forum but not to Suburbans. I sold my 2002 last year and bought a Sequoia and now I'm giving it to my wife and I'm buying another Suburban. I really want a Eaton G80 Diff but I don't have a clue how to tell if it has one. I'm going to look at a 2003 LT 4x4 tomorrow morning with 130,000 miles and would like to see if it has the G80 diff. Where do I look to see if it has it?

Thanks for the help

 

Check the PRO codes in the glove box for G80


G72 : AXLE REAR, 2.14 RATIO
G74 : HEAVY DUTY SUSPENSION
G75 : AXLE REAR, 3.62 RATIO
G76 : POSITRACTION REAR
G80 : AXLE POSITRACTION, LIMITED SLIP
G81 : POSITRACTION REAR AXLE
G82 : AXLE REAR, 4.56 RATIO
G84 : AXLE REAR, 4.10 RATIO
G86 : AXLE, REAR, LIMITED-SLIP
G87 : RING GEAR, 8.50 INCH
G89 : RING GEAR, 7.50 INCH
G91 : SPECIAL HIGHWAY REAR AXLE RATIO 3.08
G92 : AXLE REAR RATIO, PERFORMANCE
G94 : AXLE REAR, 3.31 RATIO
G95 : AXLE REAR RATIO, ECONOMY
G96 : AXLE REAR, 3.55 RATIO
G97 : AXLE REAR, 2.73 RATIO

 

Check to see if there's a build Tag in your Glove box.
Look for the G80 being listed.

PS:
Uoops, sorry in2pro, you've already said that, I guess I should start reading the replies too !

 

RPO=regular production option

 

Thanks, guys, I appreciate it. It did not have the G80. I found the sticker but no limited slip. One more question and I'll leave you alone.............for now. Does certain models normally have the G80, like the Z71 model? I know with the 4Runners, most limiteds have the rear E-Locker option.

I would have bought the 03 Suburban the other day if the lady had came ( sorry I didn't finish this ) down on price. The Tranny was slipping so I would of had to put a transmission in it.

Thanks for the help.

 

Standard on LTZs, optional on others.

 

I'm not sure if you know...
The G80 only locks up until you reach about 20mph, then unlocks.

 

Does the GM version operate electrically or from speed sensing mechanically?

 

The G80 is completely mechanical.

Ref:
&

 

That's what I thought but I saw the Eaton site showed an electric locker.