depends on the options chosen at purchase, call g.m with axle number
Depends on each individual truck. Look in your glovebox....there is a label from the factory with parts codes on it. The one with G refers to your gear ratio/ ring & pinion. GQ1 -- AXLE REAR, STD RATIO GT4 -- AXLE REAR, 3.73 RATIO GT5 -- AXLE REAR, 4.10 RATIO GU4 -- AXLE REAR, 3.08 RATIO GU5 -- AXLE REAR, 3.23 RATIO GU6 -- AXLE REAR, 3.42 RATIO G80 -- AXLE REAR, LIMITED SLIP (POSITRACTION)
synthetic gear oil
3.08
To check the rear axle ratio on your Suburban, you need to safely jack up the vehicle to get access to the the rear axle. Then there should be a metal tag on one of the bolts on the rear axle cover indicating the axle ratio. The ratio varies with different options and load capacities, so it's not the same for all Suburban's.
is it a posi rear end? big difference bteween them for procedure. yeah its positive
check your option code tag in the glove box look for gt4 gu6 call dealer and they will tell you what ratio you have good luck
the differential is the large ball looking thing in the middle of the rear axle housing
Like 3 .42
Check the SPID in your glove box. one of the G** Codes will be the rearend ratio G80 means you have a locking(posi) Rearend. GU2 AXLE REAR , 2.73 RATIO GU4 AXLE REAR , 3.08 RATIO GU5 AXLE REAR , 3.23 RATIO GU6 AXLE REAR , 3.42 RATIO GU7 AXLE REAR , 2.77 RATIO GU8 AXLE REAR , 3.90 RATIO GT2 AXLE REAR , 4.77 RATIO GT3 AXLE REAR , 4.55 RATIO GT4 AXLE REAR , 3.73 RATIO GT5 AXLE REAR , 4.10 RATIO Anything else, let me know, I'll look it up. (cortex454 at gmail dot com
i believe it would be 3.11
for my 02 1500 2wd its 75/90 gear oil
the lower your rear axle ratio, the worse your mileage.