73-80 Chassis Identification

1973-80 Vehicle ID Number (VIN)
All 1973-80 series 10 and 20 have a portion of the VIN number stamped on the engine and the transmission.  This identification number consists of the division number, model year, assembly plant and the vehicle assembly sequence number.  The VIN identification and Rating Plate is located attached to the left hand door pillar.

The examples below use the following VIN number: CCL148Z100327.
 

C  C  L  1  4  8  Z  100327

Division
C = Chevrolet
T = GMC

 

C  L  1  4  8  Z  100327

Chassis Type
C = 2 Wheel Drive
K = 4 Wheel Drive

 

C  C  L  1  4  8  Z  100327

Engine Description
1973-75 Model
Q = 250      6Cyl 
T = 292      6Cyl
X = 307      V8
V = 350-2   V8
Y = 350-4   V8
U = 400-4   V8
Z = 454-4   V8*
1976-76 Model
D = 250      6Cyl
T = 292      6Cyl
Q = 305-2   V8
V = 350-2   V8
L = 350-4   V8
U = 400-4   V8
S = 454-4   V8*
1977-77 Model
D = 250      6Cyl
T = 292      6Cyl
U = 305      V8
L = 350-4   V8
R = 400-4   V8
S = 454-4   V8
Z
1978-78 Model
D = 250      6Cyl
T = 292      6Cyl
U = 305      V8
L = 350-4   V8
R = 400-4   V8
S = 454-4   V8
Z = 350      Diesel
1979-79 Model
D = 250      6Cyl
T = 292      6Cyl
U = 305      V8
L = 350-4   V8
M = 350-2   V8
R = 400-4   V8
S = 454-4   V8
Z = 350      Diesel
1980-80 Model
D = 250      6Cyl
T = 292      6Cyl
G = 305      V8
L = 350-4   V8
M = 350-4   V8
R = 400-4   V8
S = 454-4   V8
* = 6000 lb and under GVWR.
 

C  C  L  1  4  8  Z  100327

Series
Chevrolet   GMC
1 = 10          1 = 15      1/2 Ton
2 = 20          2 = 25      3/4 Ton
3 = 30          3 = 35         1 Ton

Chevrolet or GMC
4 = 1/2 Ton (HD Suspension)


 

C  C  L  1 4  8  Z  100327

Body Type
4 = Pickup

 

C  C  L  1  4  8  Z  100327

Year
3 = 1973    6 = 1976    9 = 1979
4 = 1974    7 = 1977    A = 1980
5 = 1975    8 = 1978

 

C  C  L  1  4  8  Z  100327

Assembly Plant
A = Lakewood     S = St. Louis      1 = Oshawa
B = Baltimore      V = Pontiac        5 = London, Canada
F = Flint            T = Terrytown     8 = Shreveport
J = Janesville   Z = Fremont

 

C  C  L  1  4  8  Z  100327

Build Sequence Number
327th unit produced, certain Flint models start with 100000

 

 

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