Standard Rear Axle Option Only
4x2 10 bolt cover 3.73 ratio (opt GT4)
4x4 12 bolt cover 4.11 ratio (opt GT5)
4x2 10 bolt cover 2.73 ratio (opt GU2)
4x4 14 bolt cover 4.10 ratio (opt GT5)
4x4 12 bolt cover 2.56 ratio (opt GM8)
4x4 3.08 ratio (opt GU4)
4x4 10 bolt cover 3.08 ratio (opt GU4)
4x2 4.10 ratio (opt GT5)
4x4 10 bolt cover 4.10 ratio (opt GT5)
4x4 12 bolt cover 2.73 ratio (opt GU2)
4x4 3.42 axle ratio (opt GU6)
4x4 (model VIN K) 4.10 ratio (opt GT5)
4x4 semi-floating 4.10 ratio (opt GT5)
4x2 crew cab 4.56 ratio (opt HC4)
4x2 crew cab 4.10 ratio (opt GT5)
4x4 6 lug wheel 4.10 ratio (opt GT5)
4x4 full-floating 4.56 ratio (opt HC4)
4x4 3.23 ratio (opt GU5)
4x2 full-floating 4.56 ratio (opt HC4)
4x2 crew cab 3.23 ratio (opt GU5)
4x2 SRW 3.73 ratio (opt GT4)
4x2 SRW 4.10 ratio (opt GT5)
4x2 SRW 3.42 axle ratio (opt GU6)
4x2 SRW 4.56 ratio (opt HC4)
4x2 SRW 3.23 ratio (opt GU5)
(AWD)
Standard Rear Axle Option Only
4x4 3.42 axle ratio (opt GU6)
4x2 sport suspension (opt ZQ8)
4x4 3.73 ratio (opt GT4)
4x4 4.10 ratio (opt GT5)
4x2 off road suspension (opt Z71)
new style (smooth door skin) 4x2
new style (smooth door skin) AWD
classic style (creased door skin)
4.2L 20" wheel 3.42 ratio
3.73 ratio (opt GT4)
5.3L 4.10 ratio
5.3L 3.73 ratio
4.2L 17" wheel 3.73 ratio
5.3L 18" wheel 3.73 ratio
5.3L 3.42 ratio
4.2L 17" wheel 4.10 ratio
3.42 axle ratio (opt GU6)
5.3L 20" wheel 3.42 ratio
3.42 axle ratio (opt GU6)
4.10 ratio (opt GT5)
3.73 ratio (opt GT4)
3.73 ratio GT4
4.10 ratio GT5
3.42 ratio GU6
2500 Series 3.21 ratio (opt HC8)
3500 Series drum rear brakes DRW
2500 Series 3.73 ratio (opt GT4)
3500 Series DRW removable carrrier
3500 Series SRW 3.23 ratio (opt GU5)
2500 Series
3500 Series DRW removable carrier early
3500 Series SRW 4.10 ratio (opt GT5)
3500 Series SRW 4.56 ratio (opt HC4)
3500 Series SRW 3.73 ratio (opt GT4)
4x2 3.73 ratio (opt GT4)
4x4 3.42 axle ratio (opt GU6)
(4x4) 3.73 ratio (opt GT4)
3.42 axle ratio (opt GU6)
4x2 3.42 axle ratio (opt GU6)
4x2 3.08 ratio (opt GU4)
4x4 3.08 ratio (opt GU4)
(4x4) 3.42 axle ratio (opt GU6)
3.73 ratio (opt GT4)
4x4 2.73 ratio (opt GU2)
4x2 2 Dr 3.42 axle ratio (opt GU6)
4x4 4 Dr 3.08 ratio (opt GU4)
4x2 4.11 ratio (opt H04)
4x4 3.42 axle ratio (opt GU6)
4x4 AWD 3.73 ratio (opt GT4)
4x2 7-5/8" ring gear (3.42 ratio, GU6)
4x4 3.08 ratio (opt GU4)
4x4 w/o ZR2 8-1/2" ring gear
4x4 2 Dr 3.42 axle ratio (opt GU6)
4x4 3.73 ratio (opt GT4)
4.10 ratio (opt GT5)
2.56 ratio (opt GM8)
3.08 ratio (opt GU4)
3.23 ratio (opt GU5)
2.73 ratio (opt GU2)
3.42 axle ratio (opt GU6)
3.73 ratio (opt GT4)
4.11 ratio (opt HO4)
3.73 ratio (opt GT4)
active brake control (opt JL4)
3.42 axle ratio (opt GU6)
10-1/2" ring gear (3.54 ratio, opt GH0)
8500 GVW (opt C5F) 3.73 ratio (opt GT4)
8500 GVW (opt C5F) 4.10 ratio (opt GT5)
8600 GVW (opt C6P) 4.10 ratio (opt GT5)
7300 GVW (opt C6A)
9-3/4" ring gear 7300 GVW (opt C6A)
9-3/4" ring gear 3.73 ratio (opt GT4)
8600 GVW (opt C6P) 3.73 ratio (opt GT4)
9-3/4" ring gear 4.10 ratio (opt GT5)
full floating axle (13 x 3.5" brakes)
Cutaway Van DRW 4.10 ratio (opt GT5)
Cutaway Van SRW 9-1/2" ring gear
cutaway SRW 10-1/2" ring gear
cutaway DRW 3.73 ratio (opt GT4)
cutaway SRW
cutaway DRW 10-1/2" ring gear
exc. cutaway 4.10 ratio (opt GT5)
cutaway DRW
cutaway DRW 10-3/4" ring gear
exc. cutaway
exc. Crew Cab 4x2 3.08 ratio (opt GU4)
Regular Cab 4x4 3.73 ratio (opt GT4)
4x2 3.08 ratio (opt GU4)
exc. Crew Cab 4x4 4.10 ratio (opt GT5)
Crew Cab 4.10 ratio (opt GT5)
9.5" ring gear (14 bolt) brake opt JF3
4x2 3.42 axle ratio (opt GU6)
exc. Crew Cab 4x4 3.73 ratio (opt GT4)
Regular Cab 4x4 4.10 ratio (opt GT5)
4x2 3.73 ratio (opt GT4)
full-floating axle 4.10 ratio (opt GT5)
semi-floating axle 4.10 ratio (opt GT5)
10.50" ring gear 4.10 ratio (opt GT5)
10.5" ring gear 3.73 ratio (opt GT4)
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)
11.50" ring gear (3.73 ratio, opt GT4)
11.5" ring gear (3.73 ratio, opt GT4)
10.5" ring gear 4.10 ratio (opt GT5)
SRW 4.10 ratio (opt GT5)
SRW 3.73 ratio (opt GT4)
9.5" ring gear (5.3L)
9.5" ring gear (14 bolt)
8.6" ring gear (10 bolt)
9.75" ring gear (6.2L)
Standard Rear Axle Option Only
Standard Rear Axle Option Only
4x4 8-1/2" ring gear ZR2 (3.73 ratio)
3.08 ratio (opt GU4)
4x2 w/o 3rd shock 2.73 ratio (opt GU2)
4x2 w/o 3rd shock 3.08 ratio (opt GU4)
2.56 ratio (opt GM8)
4x2 4.11 ratio (opt H04)
4x4 3.08 ratio (opt GU4)
4x2 3.73 ratio (opt GT4)
4x2 w/o 3rd shock 4.10 ratio (opt GT5)
4x2 3rd shock 3.73 ratio (opt GT4)
(3.42 ratio, opt GU6)
(AWD)
(3.42 ratio, opt GU6)
3.73 ratio (opt GT4)
4 Dr 4x2 3.08 ratio (opt GU4)
2 Dr 4x4 3.73 ratio (opt GT4)
2 Dr 4x4 3.42 axle ratio (opt GU6)
4x2 3.23 ratio (opt GU5)
4x4 3.73 ratio (opt GT4)
4 Dr 4x4 3.42 axle ratio (opt GU6)
exc. Denali 4x2 3.73 ratio (opt GT4)
4x2 3.42 axle ratio (opt GU6)
exc. Denali 4x4 3.73 ratio (opt GT4)
4x4 3.73 ratio (opt GT4)
4.10 ratio (opt GT5)
4x2 3.73 ratio (opt GT4)
4x4 4.10 ratio (opt GT5)
4x4 3.42 axle ratio (opt GU6)
4x2 3.42 axle ratio (opt GU6)
4x2 4.10 ratio (opt GT5)
3.73 ratio (opt GT4)
3.73 ratio (opt GT4)
(3.73 ratio, opt GT4)
4.10 ratio (opt GT5)