


| Chevrolet | GMC Sierra | ||||||
| C-1,K-1 | C-2,K-2 | C-3,K-3 | C-1,K-1 | C-2,K-2 | C-3,K-3 | ||
| 1973 | 3 | 10 | 20 | 30 | 1500 | 2500 | 3500 |
|---|---|---|---|---|---|---|---|
| 1974 | 4 | 10 | 20 | 30 | 1500 | 2500 | 3500 |
| 1975 | 5 | 10 | 20 | 30 | 15 | 25 | 35 |
| 1976 | 6 | 10 | 20 | 30 | 15 | 25 | 35 |
| 1977 | 7 | 10 | 20 | 30 | 15 | 25 | 35 |
| 1978 | 8 | 10 | 20 | 30 | 15 | 25 | 35 |
| 1979 | 9 | 10 | 20 | 30 | 15 | 25 | 35 |
| 1980 | A | 10 | 20 | 30 | 15 | 25 | 35 |
| C1, K1 | C2, K2 | C3, K3 | C1, K1 | C2, K2 | C3, K3 | ||
| 1981 | B | 10 | 20 | 30 | 1500 | 2500 | 3500 |
| 1982 | C | 10 | 20 | 30 | 1500 | 2500 | 3500 |
| 1983 | D | 10 | 20 | 30 | 1500 | 2500 | 3500 |
| 1984 | E | 10 | 20 | 30 | 1500 | 2500 | 3500 |
| 1985 | F | 10 | 20 | 30 | 1500 | 2500 | 3500 |
| 1986 | G | 10 | 20 | 30 | 1500 | 2500 | 3500 |
| R1, V1 | R2, V2 | R3, V3 | R1, V1 | R2, V2 | R3, V3 | ||
| 1987 | H | 10 | 20 | 30 | 1500 | 2500 | 3500 |
| 1988 | J | 20 | 30 | 2500 | 3500 | ||
| 1989 | K | 2500 | 3500 | 2500 | 3500 | ||
| 1990 | L | 3500 | 3500 | ||||
| 1991 | M | 3500 | 3500 | ||||
| Style | Layout | Avail. | W.B. | VIN | |||
|---|---|---|---|---|---|---|---|
| 73-80 | 81-86 | 87-91 | |||||
| 2 dr short bed pickup | FE RWD | 73-87 | 117.5 | C--4 | C-4 | R-4 | |
| 2 dr short bed pickup | FE R/4WD | 73-87 | 117.5 | K--4 | K-4 | V-4 | |
| 2 dr long bed pickup | FE RWD | 73-87 | 131.5 | C--4 | C-4 | R-4 | |
| 2 dr long bed pickup | FE R/4WD | 73-87 | 131.5 | K--4 | K-4 | V-4 | |
| 4 dr Crew Cab pickup | FE RWD | 73-91 | 164.5 | C--4 | C-3,C-4 | R-3,R-4 | |
| 4 dr Crew Cab pickup | FE R/4WD | 73-91 | 164.5 | K--4 | K-3,K-4 | V-3,V-4 | |