Post by Pontiac1976 on Oct 21, 2012 10:38:25 GMT -5
How do you decode it?
what year are you working with what yr is the frame said to be.
You decode it like your Vin because it is the truck Vin that will tell you if the frame matches your cab and what yr the frame can from.
OK here goes. this is for the 73-80 frame
The first ----- letter will be C for Chevrolet or T for GMC.
The second---- C for 2 wheel drive or K for 4 wheel drive.
The third is the engine description .
The fourth is Series for Chevy 1=10, 2=20, 3=30 For GMC 1=15, 2=25, 3=35
The fifth is body type 4 = PICK UP
The sixth is Year. 3=73, 4=74, 5=75, 6=76, 7=77, 8=78, 9=79, A=80.
OK here goes. this is for the 81-87 frame
The first ----- number will be 1 or 2 1 = United States 2= Canada
The second ----- letter's will be GC for Chevrolet or GT for GMC.
The third---- will be a Letter B to H = IE. B,C,D,E,F,G,H . GVW Range & Brake System The First 3100-4000 up to 9001-10000
The fourth---- will be a Letter C,K,R,V. 2 Wheel drive 1981-86, 4 Wheel drive 1981-86, 2 Wheel drive 1987-89, 4 Wheel drive 1987-89,
The fifth -----is going to be 1, or 2, or 3 1= 1/2 Ton, 2= 3/4 Ton, 3= 1 Ton.
The sixth ----- Number is going to be 3 or 4 = 4 Door Cab \ 2 Door Cab
The eight is the YR B=1981 - K=1989
