Standard Rear Axle Option Only
4x4 10 bolt cover 3.08 ratio (opt GU4)
4x4 10 bolt cover 3.73 ratio (opt GT4)
4x4 2.56 ratio (opt GM8)
4x4 12 bolt cover 2.56 ratio (opt GM8)
4x4 12 bolt cover 2.73 ratio (opt GU2)
4x2 10 bolt cover 3.73 ratio (opt GT4)
4x4 14 bolt cover 4.10 ratio (opt GT5)
4x2 4.10 ratio (opt GT5)
4x4 3.42 axle ratio (opt GU6)
4x2 3.42 axle ratio (opt GU6)
4x4 3.42 axle ratio (opt GU6)
4x2 model VIN R 4.56 ratio (opt HC4)
4x2 model VIN C 4.10 ratio (opt GT5)
4x4 (model VIN K) 3.73 ratio (opt GT4)
4x2 crew cab 4.56 ratio (opt HC4)
4x2 crew cab 3.73 ratio (opt GT4)
4x4 4.10 ratio (opt GT5)
4x2 full-floating 3.73 ratio (opt GT4)
4x2 model VIN R 4.10 ratio (opt GT5)
4x4 8 lug wheel 3.73 ratio (opt GT4)
4x2 SRW 3.42 axle ratio (opt GU6)
4x2 SRW 3.23 ratio (opt GU5)
4x2 SRW 4.10 ratio (opt GT5)
4x2 SRW 3.73 ratio (opt GT4)
4x2 SRW 4.56 ratio (opt HC4)
(AWD)
Standard Rear Axle Option Only
4x2 sport suspension (opt ZQ8)
4x2 off road suspension (opt Z71)
4x4 3.42 axle ratio (opt GU6)
4x4 3.73 ratio (opt GT4)
4x4 4.10 ratio (opt GT5)
classic style (creased door skin)
new style (smooth door skin) AWD
new style (smooth door skin) 4x2
5.3L 20" wheel 3.73 ratio
4.2L 20" wheel 3.42 ratio
5.3L 3.42 ratio
4.2L 18" wheel 4.10 ratio
4.2L 17" wheel 3.42 ratio
5.3L 20" wheel 3.42 ratio
3.73 ratio (opt GT4)
3.42 axle ratio (opt GU6)
4.2L 18" wheel 3.42 ratio
4.2L 18" wheel 3.73 ratio
4.10 ratio (opt GT5)
3.73 ratio (opt GT4)
3.42 axle ratio (opt GU6)
3.73 ratio GT4
4.10 ratio GT5
3.42 ratio GU6
3500 Series SRW 4.10 ratio (opt GT5)
3500 Series SRW 3.21 ratio (opt HC8)
2500 Series 4.56 ratio (opt HC4)
3500 Series SRW 3.23 ratio (opt GU5)
3500 Series DRW removable carrier late
2500 Series 3.21 ratio (opt HC8)
2500 Series 4.10 ratio (opt GT5)
3500 Series SRW 3.73 ratio (opt GT4)
3500 Series drum rear brakes SRW
2500 Series 3.42 axle ratio (opt GU6)
4x4 3.08 ratio (opt GU4)
4x4 3.73 ratio (opt GT4)
(4x4) 3.08 ratio (opt GU4)
4x2 3.42 axle ratio (opt GU6)
4x4 3.42 axle ratio (opt GU6)
4x2 3.08 ratio (opt GU4)
3.73 ratio (opt GT4)
(4x4) 3.73 ratio (opt GT4)
(4x4) 2.73 ratio (opt GU2)
4x4 2.73 ratio (opt GU2)
4x4 w/o ZR2 8-1/2" ring gear
4x4 ZR2
4x2 4 Dr 3.42 axle ratio (opt GU6)
4x4 3.73 ratio (opt GT4)
4x2 8-1/2" ring gear w/o ZR2
4x4 AWD 3.73 ratio (opt GT4)
4x4 ZR2 opt (3.73 ratio GT4)
4x4 4 Dr 3.08 ratio (opt GU4)
4x2 7-5/8" ring gear
4x2 3.42 axle ratio (opt GU6)
3.42 axle ratio (opt GU6)
4.10 ratio (opt GT5)
4.11 ratio (opt HO4)
3.08 ratio (opt GU4)
3.73 ratio (opt GT4)
2.73 ratio (opt GU2)
3.23 ratio (opt GU5)
2.56 ratio (opt GM8)
active brake control (opt JL4)
3.73 ratio (opt GT4)
3.42 axle ratio (opt GU6)
9-3/4" ring gear 3.73 ratio (opt GT4)
9-3/4" ring gear 4.10 ratio (opt GT5)
10-1/2" ring gear (3.54 ratio, opt GH0)
10-1/2" ring gear
8500 GVW (opt C5F) 4.10 ratio (opt GT5)
8600 GVW (opt C6P) 3.73 ratio (opt GT4)
full floating axle (13 x 3.5" brakes)
9-1/2" ring gear (3.42 ratio, opt GU6)
8500 GVW (opt C5F) 3.73 ratio (opt GT4)
7300 GVW (opt C6A)
exc. cutaway 4.10 ratio (opt GT5)
cutaway DRW 4.10 ratio (opt GT5)
cutaway SRW 9-1/2" ring gear
exc. cutaway
Cutaway Van SRW 10-1/2" ring gear
cutaway DRW 10-1/2" ring gear
exc. cutaway 3.73 ratio (opt GT4)
cutaway DRW 3.73 ratio (opt GT4)
cutaway SRW
cutaway DRW
exc. Crew Cab 4x2 3.08 ratio (opt GU4)
4x2 3.08 ratio (opt GU4)
exc. Crew Cab 4x2 3.73 ratio (opt GT4)
9.5" ring gear (14 bolt) brake opt JF3
Regular Cab 4x2 3.08 ratio (opt GU4)
Crew Cab 4.10 ratio (opt GT5)
exc. Crew Cab 4x4 4.10 ratio (opt GT5)
4x2 3.73 ratio (opt GT4)
Regular Cab 4x2 3.73 ratio (opt GT4)
4x2 3.42 axle ratio (opt GU6)
10.50" ring gear 4.10 ratio (opt GT5)
full-floating axle 3.73 ratio (opt GT4)
semi-floating axle 3.73 ratio (opt GT4)
10.50" ring gear 3.73 ratio (opt GT4)
11.5" ring gear (3.73 ratio, opt GT4)
semi-floating axle 4.10 ratio (opt GT5)
10.5" ring gear 4.10 ratio (opt GT5)
10.5" ring gear 3.73 ratio (opt GT4)
11.50" ring gear (3.73 ratio, opt GT4)
full-floating axle 4.10 ratio (opt GT5)
SRW 3.73 ratio (opt GT4)
SRW 4.10 ratio (opt GT5)
8.6" ring gear (10 bolt)
9.75" ring gear (6.2L)
9.5" ring gear (5.3L)
9.5" ring gear (14 bolt)
Standard Rear Axle Option Only
Standard Rear Axle Option Only
4x2 3rd shock 4.10 ratio (opt GT5)
4x2 2.73 ratio (opt GU2)
4x2 3.73 ratio (opt GT4)
4x4 3.42 axle ratio (opt GU6)
3.73 ratio (opt GT4)
4x4 8-1/2" ring gear ZR2 (3.73 ratio)
4x4 2.73 ratio (opt GU2)
2.56 ratio (opt GM8)
4x2 w/o 3rd shock 2.73 ratio (opt GU2)
4x2 8-1/2" ring gear
(3.42 ratio, opt GU6)
(AWD)
(3.42 ratio, opt GU6)
4x4 4.10 ratio (opt GT5)
4 Dr 4x2 3.42 axle ratio (opt GU6)
3.42 axle ratio (opt GU6)
2 Dr 4x4 3.73 ratio (opt GT4)
4 Dr 4x4 3.42 axle ratio (opt GU6)
4 Dr 4x2 3.08 ratio (opt GU4)
9-1/2" ring gear (3.42 ratio, opt GU6)
4 Dr 4x2 3.73 ratio (opt GT4)
exc. Denali 4x4 3.73 ratio (opt GT4)
4x2 3.73 ratio (opt GT4)
4.10 ratio (opt GT5)
4x4 3.73 ratio (opt GT4)
4x2 3.42 axle ratio (opt GU6)
4x4 4.10 ratio (opt GT5)
4x2 4.10 ratio (opt GT5)
3.73 ratio (opt GT4)
4x4 3.42 axle ratio (opt GU6)
4x2 3.73 ratio (opt GT4)
4.10 ratio (opt GT5)
(3.73 ratio, opt GT4)
3.73 ratio (opt GT4)