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1955 1966 Truck Tech

1955 Second Series-66 Chevy Truck Model I.D.

We hope the following information on Axle, Transmission and Model identification will help many of you with your questions. Accuracy was a concern as we compiled this information. Because GM made so many scheduled as well as unscheduled changes, there is much discussion about these changes.

The following is used by permission from Pickups and Panels Magazine and artist Bryant J. Stewart

1955 2nd Series

1955 truck tech 1

SERIES WHEELBASE VEHICLE TYPE
H 3100 116 ½ ton shortbed pickup, panel, Suburban
H 3124 116 ½ ton Cameo pickup
M 3200 123-1/4 ½ ton longbed pickup
F 3400 104 ¾ ton longbed pickup (double duty) (forward control delivery chassis)
G 3500 125 ¾ ton pickup (double duty) (forward control delivery chassis)
J 3600 123-1/4 ¾ ton longbed pickup
K 3700 137 ¾ ton pickup (double duty) (forward control delivery chassis)
L 3800 135 1 ton longbed pickup, panel, flatbed, stake
N 4100 130 1-½ ton flatbed, stake rack
P 4400 154 1-½ ton flatbed, stake rack
R 4500 154 1-½ ton school bus chassis
S 5100 112-5/8 2 ton low cab forward
T 5400 136-5/8 2 ton low cab forward
U 5700 160-5/8 2 ton low cab forward
V 6100 130 2 ton flatbed, stake rack
W 6400 154 2 ton flatbed, stake rack
X 6500 172 2 ton truck
Y 6700 194 2 ton school bus chassis
Z 6800 220 2 ton school bus chassis

1956

1955 truck tech 2

SERIES WHEELBASE VEHICLE TYPE
3A 3100 114 ½ ton shortbed pickup, panel, Suburban
3A 3124 114 ½ ton Cameo pickup
3B 3200 123-1/4 ½ ton longbed pickup
3C 3400 104 ¾ ton longbed pickup (double duty) (forward control delivery chassis)
3D 3500 125 ¾ ton longbed pickup (double duty) (forward control delivery chassis)
3E 3600 123-1/4 ¾ ton longbed pickup
3F 3700 137 ¾ ton pickup (double duty) (forward control delivery chassis)
3G 3800 135 1 ton pickup, panel, flatbed, stake
4A 4100 130 1-½ ton flatbed, stake rack
4B 4400 154 1-½ ton flatbed, stake rack
4C 4500 154 1-½ ton school bus chassis
6A 6100 130 2 ton flatbed, stake rack
6B 6400 154 2 ton flatbed, stake rack
6C 6500 172 2 ton
6D 6700 194 2 ton school bus chassis
6E 6800 220 2 ton school bus chassis

1957

1955 truck tech 3

SERIES WHEELBASE VEHICLE TYPE
3A 3100 114 ½ ton shortbed pickup, panel, Suburban
3A 3124 114 ½ ton Cameo pickup
3B 3200 123-1/4 ½ ton longbed pickup
3C 3400 104 ¾ ton longbed pickup (double duty) (forward control delivery chassis)
3D 3500 125 ¾ ton longbed (double duty) (forward control delivery chassis
3E 3600 123-1/4 ¾ ton longbed pickup
3F 3700 137 ¾ ton pickup (double duty) (forward control delivery chassis)
3G 3800 135 1 ton pickup, flatbed, stake rack
4A 4100 132-1/2 1-½ ton truck
4B 4400 156-1/2 1-½ ton truck
4C 4500 156-1/2 1-½ ton school bus chassis
6A 6100 132-1/2 2 ton flatbed, stake rack
6J 6200 129-5/8 2 ton truck (forward control chassis)
6B 6400 156-1/2 2 ton flatbed, stake rack
6C 6500 174-1/2 2 ton truck
6K 6600 153-5/8 2 ton truck (forward control chassis)
6D 6700 196-1/2 2 ton school bus chassis
6E 6800 222-1/2 2 ton school bus chassis

1958

1955 truck tech 4

SERIES WHEELBASE VEHICLE TYPE
3A 3100 114 ½ ton shortbed pickup, panel, Suburban
3A 3124 114 ½ ton cameo pickup
3B 3200 123-1/4 ½ ton longbed step/fleetside pickup
3E 3600 123-1/4 ¾ ton longbed step/fleetside pickup, stake
3G 3800 135 1 ton stepside pickup, panel, stake rack

1959

1955 truck tech 5

SERIES WHEELBASE VEHICLE TYPE
11/1280 119 El Camino L-6/V-8
3A 3100 114 ½ ton shortbed step/fleetside pickup, panel, Suburban
3B 3200 123-1/4 ½ ton longbed step/fleetside pickup
3E 3600 123-1/4 ¾ ton longbed step/fleetside pickup, stake rack
3G 3800 135 1 ton stepside pickup, panel, stake rack

1960

1955 truck tech 6

SERIES WHEELBASE VEHICLE TYPE
11/1280 119 El Camino L-6/V-8
C/K14 115 ½ ton 4×2/4×4 shortbed step/fleetside pickup, panel, Suburban (Apache 10)
C15 127 ½ ton longbed step/fleetside pickup (Apache 10)
C/K25 127 ¾ ton 4×2/4×4 longbed step/fleetside pickup, 8′ stake bed (Apache 20)
C36 133 1 ton longbed stepside pickup, panel, 9′ stake bed (Apache 30)

1961-1963

1955 truck tech 7

SERIES WHEELBASE VEHICLE TYPE
C10 1404-34 115 ½ ton shortbed step/fleetside pickup, panel, Suburban
C15 1504-34 127 ½ ton longbed step/fleetside pickup
C25 127 ¾ ton longbed step/fleetside pickup, Suburban, 8′ stake bed
K14* 1404-34 115 ½ ton 4×2/4×4 shortbed step/fleetside pickup, panel, Suburban
K25* 2504-39 127 ¾ ton 4×4 longbed step/fleetside pickup
C36 1404-34 133 1 ton longbed stepside pickup, panel, 9′ stake bed

1964-1966

1955 truck tech 8

SERIES WHEELBASE VEHICLE TYPE
A5380 115 ½ ton El Camino (6 cylinder)
A5480 115 ½ ton El Camino (8 cylinder)
A5580 115 ½ ton El Camino Custom (6 cylinder)
A5680 115 ½ ton El Camino Custom (8 cylinder)
C10 115 ½ ton shortbed step/fleetside pickup, panel, Suburban
C10 127 ½ ton longbed step/fleetside pickup
C20 127 ¾ ton longbed step/fleetside pickup, Suburban, 8′ stake bed
K10 115 ½ ton 4×4 shortbed step/fleetside pickup, panel, Suburban
K20 127 ¾ ton 4×4 longbed step/fleetside pickup
C30 133 1 ton longbed stepside pickup, panel, 9′ stake

Note” The vehicle serial number on 1963 Four Wheel Drive models may be used to determine if the model is a First or Second Series Design. The following chart indicates each assembly plant and the sequence of vehicle serial numbers which apply to First Series or Second series.

*1st Series up to and including # *2nd Series including and begining wit # Assembly Plants
106084 106085 A= Atlanta
106732 106733 B= Baltimore
106559 106560 F= Flint
110340 110341 J= Janesville
112645 112646 N= Norwood
125965 125966 O= Oakland
118544 118545 S= St. Louis
109948 109949 T= Tarrytown

Disclaimer: This truck I. D. information is correct and complete to the best of our knowledge and is only to be used as a guide. Pickups ‘n panels and/or the National Chevy/GMC Truck Association, and Jim Carter Truck Parts, make no guarantee of accuracy, and disclaim any liability incurred in the use of this information.

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