Advance Design Truck Identification
The serial number consists of a group of numbers and letters which indicate the assembly plant, the model year, the series, the month of assembly,
and the number of units (plus 1000) assembled at that plant.
EXAMPLE – 3SKB19943
3-SK-B-19943 indicates that the truck was assembled at St. Louis. 1949 model, Series 4400,
built in February, and was the 18,943rd truck of the 4400 series built at that plant.
3 SK B 19943
| Assembly Plant | Symbol & Series | Month | Unit Number |
| 1. Flint | GJ — 1500 | A — January | Each series separately numbered in sequence, starting with 1001, at each plant. (this number not necessary for chassis classification.) |
| 2. Tarrytown | GK — 2000 | B — February | |
| 3. St. Louis | GP — 3100 | C — March | |
| 5. Kansas City | GR — 3600 | D — April | |
| 6. Oakland | GT — 3700 | E — May | |
| 8. Atlanta | GS — 3800 | F — June | |
| 9. Norwood | GU — 3900 | G — July | |
| 14. Baltimore | SJ — 4100 | H — August | |
| 20. Los Angeles | SK — 4400 | I — September | |
| 21. Janesville | SL — 4500 | J — October | |
| SP(S) — 5100 | K — November | ||
| SR (S) — 5400 | L — December | ||
| SS(S) — 5700 | |||
| SV(S) — 6100 | |||
| SW(S) — 6400 | |||
| SX — 6700 |
1947 2ND SERIES
| Symbol | Wheel Base | Series | Type of Vehicle |
| EJ | 116 | 1500 | Passenger (Stylemaster) |
| EK | 116 | 2000 | Passenger (Fleetmaster & Fleetline) |
| EP | 116 | 3100 | Commercial ½ Ton Truck |
| ER | 125 ¼ | 3600 | Commercial ¾ Ton Truck |
| ES | 137 | 3800 | Commercial 1 Ton Truck |
| QJ | 137 | 4100 | Utility 1 ½ Ton Truck |
| QK | 161 | 4400 | Utility 1 ½ Ton Truck |
| QL | 161 | 4500 | Utility School Bus Chassis |
| QV(S) | 137 | 6100 | Utility 2 Ton Truck |
| QW(S) | 161 | 6400 | Utility 2 Ton Truck |
| QX | 199 | 6700 | Utility School Bus Chassis |
| QP(S) | 110 | 5100 | Utility 2 Ton Truck, COE |
| QR(S) | 134 | 5400 | Utility 2 Ton Truck, COE |
| QS(S) | 158 | 5700 | Utility 2 Ton Truck, COE |
1948
| Symbol | Wheel Base | Series | Type of Vehicle |
| FJ | 116 | 1500 | Passenger (Stylemaster) |
| FK | 116 | 2100 | Passenger (Fleetmaster & Fleetline) |
| FP | 116 | 3100 | Commercial ½ Ton Truck |
| FR | 125 ¼ | 3600 | Commercial ¾ Ton Truck |
| FT | 125 ¼ | 3700 | Commercial ¾ Ton Truck (Double Duty) Forward Control Delivery Chassis |
| FS | 137 | 3800 | Commercial 1 Ton Truck |
| FU | 137 | 3900 | Commercial 1 Ton Truck (Double Duty) Forward Control Delivery Chassis |
| RJ | 137 | 4100 | Utility 1 ½ Ton Truck |
| RK | 161 | 4400 | Utility 1 ½ Ton Truck |
| RL | 161 | 4500 | Utility School Bus Chassis |
| RV(S) | 137 | 6100 | Utility 2 Ton Truck |
| RW(S) | 161 | 6400 | Utility 2 Ton Truck |
| RX | 199 | 6700 | Utility School Bus Chassis |
| RP(S) | 110 | 5100 | Utility 2 Ton Truck, COE |
| RR(S) | 134 | 5400 | Utility 2 Ton Truck, COE |
| RS(S) | 158 | 5700 | Utility 2 Ton Truck, COE |
1949
| Symbol | Wheel Base | Series | Type of Vehicle |
| GJ | 115 | 1500 | Passenger (Special) Stylemaster & Fleetline |
| GK | 115 | 2100 | Passenger (Deluxe) Stylemaster & Fleetline |
| GP | 116 | 3100 | Commercial ½ Ton Truck |
| GR | 125 ¼ | 3600 | Commercial ¾ Ton Truck |
| GT | 125 ¼ | 3700 | Commercial ¾ Ton Truck (Double Duty) Forward Control Delivery Chassis |
| GS | 137 | 3800 | Commercial 1 Ton Truck |
| GU | 137 | 3900 | Commercial 1 Ton Truck (Double Duty) Forward Control Delivery Chassis |
| SJ | 137 | 4100 | Utility 1 ½ Ton Truck |
| SK | 161 | 4400 | Utility 1 ½ Ton Truck |
| SL | 161 | 4500 | Utility School Bus Chassis |
| SV(S) | 137 | 6100 | Utility 2 Ton Truck |
| SW(S) | 161 | 6400 | Utility 2 Ton Truck |
| SX | 199 | 6700 | Utility School Bus Chassis |
| SP(S) | 110 | 5100 | Utility 2 Ton Truck, COE |
| SR(S) | 134 | 5400 | Utility 2 Ton Truck, COE |
| SS(S) | 158 | 5700 | Utility 2 Ton Truck, COE |
1950
| Symbol | Wheel Base | Series | Type of Vehicle |
| HJ | 116 | 1500 | Passenger (Special) Stylemaster & Fleetline |
| HK | 116 | 2100 | Passenger (Deluxe) Stylemaster & Fleetline |
| HP | 116 | 3100 | Commercial ½ Ton Truck |
| HR | 125 ¼ | 3600 | Commercial ¾ Ton Truck |
| HT | 125 ¼ | 3700 | Commercial ¾ Ton Truck (Double Duty) Forward Control Delivery Chassis |
| HS | 137 | 3800 | Commercial 1 Ton Truck |
| HU | 137 | 3900 | Commercial 1 Ton Truck (Double Duty) Forward Control Delivery Chassis |
| TJ | 137 | 4100 | Utility 1 ½ Ton Truck |
| TK | 161 | 4400 | Utility 1 ½ Ton Truck |
| TL | 161 | 4500 | Utility School Bus Chassis |
| TV(S) | 137 | 6100 | Utility 2 Ton Truck |
| TW(S) | 161 | 6400 | Utility 2 Ton Truck |
| TX | 199 | 6700 | Utility School Bus Chassis |
| TP(S) | 110 | 5100 | Utility 2 Ton Truck, COE |
| TR(S) | 134 | 5400 | Utility 2 Ton Truck, COE |
| TS(S) | 158 | 5700 | Utility 2 Ton Truck, COE |
1951
| Symbol | Wheel Base | Series | Type of Vehicle |
| JJ | 116 | 1500 | Passenger (Special) Stylemaster & Fleetline |
| JK | 116 | 2100 | Passenger (Deluxe) Stylemaster & Fleetline |
| JP | 116 | 3100 | Commercial ½ Ton Truck |
| JR | 125 ¼ | 3600 | Commercial ¾ Ton Truck |
| JT | 125 ¼ | 3700 | Commercial ¾ Ton Truck (Double Duty) Forward Control Delivery Chassis |
| JS | 137 | 3800 | Commercial 1 Ton Truck |
| JU | 137 | 3900 | Commercial 1 Ton Truck (Double Duty) Forward Control Delivery Chassis |
| UJ | 137 | 4100 | Utility 1 ½ Ton Truck |
| UK | 161 | 4400 | Utility 1 ½ Ton Truck |
| UL | 161 | 4500 | Utility School Bus Chassis |
| UV(S) | 137 | 6100 | Utility 2 Ton Truck |
| UW(S) | 161 | 6400 | Utility 2 Ton Truck |
| UX | 199 | 6700 | Utility School Bus Chassis |
| UP(S) | 110 | 5100 | Utility 2 Ton Truck, COE |
| UR(S) | 134 | 5400 | Utility 2 Ton Truck, COE |
| US(S) | 158 | 5700 | Utility 2 Ton Truck, COE |
1952
| Symbol | Wheel Base | Series | Type of Vehicle |
| KJ | 116 | 1500 | Passenger (Special) Stylemaster & Fleetline |
| KK | 116 | 2100 | Passenger (Deluxe) Stylemaster & Fleetline |
| KP | 116 | 3100 | Commercial ½ Ton Truck |
| KR | 125 ¼ | 3600 | Commercial ¾ Ton Truck |
| KT | 125 ¼ | 3700 | Commercial ¾ Ton Truck (Double Duty) Forward Control Delivery Chassis |
| KS | 137 | 3800 | Commercial 1 Ton Truck |
| KU | 137 | 3900 | Commercial 1 Ton Truck (Double Duty) Forward Control Delivery Chassis |
| VJ | 137 | 4100 | Utility 1 ½ Ton Truck |
| VK | 161 | 4400 | Utility 1 ½ Ton Truck |
| VL | 161 | 4500 | Utility School Bus Chassis |
| VV(S) | 137 | 6100 | Utility 2 Ton Truck |
| VW(S) | 161 | 6400 | Utility 2 Ton Truck |
| VX | 199 | 6700 | Utility School Bus Chassis |
| VP(S) | 110 | 5100 | Utility 2 Ton Truck, COE |
| VR(S) | 134 | 5400 | Utility 2 Ton Truck, COE |
| VS(S) | 158 | 5700 | Utility 2 Ton Truck, COE |
1953 – 1955 1st
| Symbol | Wheel Base | Series | Type of Vehicle |
| A | 115 | 1500 | Passenger (One Fifty) |
| B | 115 | 2100 | Passenger (Two Ten) |
| C | 115 | 2400 | Passenger (Bel Air) |
| D | 115 | 1508 | Sedan Delivery |
| H | 116 | 3100 | Commercial ½ Ton Truck |
| J | 125 ¼ | 3600 | Commercial ¾ Ton Truck |
| K | 125 ¼ | 3700 | Commercial ¾ Ton Truck (Double Duty) Forward Control Delivery Chassis |
| L | 137 | 3800 | Commercial 1 Ton Truck |
| M | 137 | 3900 | Commercial 1 Ton Truck (Double Duty) Forward Control Delivery Chassis |
| N | 137 | 4100 | Utility 1 ½ Ton Truck |
| P | 161 | 4400 | Utility 1 ½ Ton Truck |
| R | 161 | 4500 | Utility School Bus Chassis |
| V | 137 | 6100 | Utility 2 Ton Truck |
| W | 161 | 6400 | Utility 2 Ton Truck |
| X | 179 | 6500 | Utility 2 Ton Truck |
| Y | 199 | 6700 | Utility School Bus Chassis |
| Z | 212 | 6800 | Utility School Bus Chassis |
| S | 110 | 5100 | Utility 2 Ton Truck, COE |
| T | 134 | 5400 | Utility 2 Ton Truck, COE |
| U | 158 | 5700 | Utility 2 Ton Truck, COE |
REFERENCES:
1949 Chevrolet Truck Data Book
1951 Chevrolet Truck Data Book
Chevs of the 40’s
NOTE 1: In my Chevrolet Truck Data Books, Model 2100 is listed as model 2000. I’m not quite sure which one is correct. I got model 2100 from the reference Chevs of the 40’s provided. If the is a mistake, please let me know.
NOTE 2: I don’t have a data book for the 1954-55 1st series and am going by what Chevs of the 40’s lists. If this is in error, please let me know.