| Digit | Usage | VIN | Decoded | |
|---|---|---|---|---|
| 1 | Mfgr | C | Chevrolet | |
| 2 | Chassis | P | Forward Control | |
| 3 | Engine | Y | V8 454-4v 240hp (P Models) or Cat 3208 V8 Diesel (heavy duty) | |
| 4 | Series | 3 | 1 ton | |
| 5 | Body | 7 | Motor Home chassis | |
| 6 | Year | 7 | 1977 | |
| 7 | Plant | 3 | Detroit MI | |
| 8-13 | Sequential Serial # | 320397 | 320397 |