Chevrolet Low Cab Forward 4500 2019 Series Owner's Manual page 295

294 Technical Data
The VIN contains multiple pieces of information including the vehicle and engine model codes as shown below.
5 4 D C
1 2
Section
1 World Manufacturer Identifier (WMI)
54D: ISUZU Incomplete Spartan Assembly Plant
2 GVWR and Brake System
B: 10001-14000 lbs. hydraulic brake system
C: 14001-16000 lbs. hydraulic brake system
3 Series Code
4: GM Chevrolet 3500/4500
4 Cab Type Code
W: Steel tilt single cab, 71 inch bumper to back of cab (BBC)
J: Non-tilt crew cab, 110 inch bumper to back of cab (BBC)
5 Chassis Type Code
1: 4 x 2
6 Engine Code
B: L96-V8 Gasoline Engine
C: LC8-V8 CNG/LPG Engine
7 Check Digit
4 W 1 B
3 4 5 6
* K S 8
7 8 9 10
Description
0 0 0 0
11
1