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Southpa · 11-05-2002, 08:40 PM

1st post! Welcome to the board, sir!

C=2wd
M=V-6 gas
1=1/2 ton
OD=wideside

P=Pontiac, Mi.
B=1968

the rest is production serial no.

http://www.gmcpauls.com/67-72_gmc.htm

Unfortunatedly, Paul's site only covers 67-69 yrs.

1970 and 71 formats are different.
My 1970 CE134-1Z58128

1st- vehicle type (C=2wd, K=4wd)
2nd-engine type (S=I6, E=V8 etc.)
3rd-GVW range (1=1/2, 2=3/4 ton etc.)
4th & 5th-body type (04=step, 34=fleet)

hyphen

6th- production plant (1=Oshawa)
7th- year (Z=1970, 1=1971)

last 5- production ser. numbers

then they adopted a different system for 1972-1978

11-05-2002, 08:40 PM	#2
Southpa Registered User Join Date: May 2000 Location: Victoria, BC, Canada Posts: 2,410	1st post! Welcome to the board, sir! C=2wd M=V-6 gas 1=1/2 ton OD=wideside P=Pontiac, Mi. B=1968 the rest is production serial no. http://www.gmcpauls.com/67-72_gmc.htm Unfortunatedly, Paul's site only covers 67-69 yrs. 1970 and 71 formats are different. My 1970 CE134-1Z58128 1st- vehicle type (C=2wd, K=4wd) 2nd-engine type (S=I6, E=V8 etc.) 3rd-GVW range (1=1/2, 2=3/4 ton etc.) 4th & 5th-body type (04=step, 34=fleet) hyphen 6th- production plant (1=Oshawa) 7th- year (Z=1970, 1=1971) last 5- production ser. numbers then they adopted a different system for 1972-1978 __________________ 1970 GMC 1500 Custom Original 350/TH350 Victoria, BC, Canada You can wish in one hand and crap in the other. See which one gets filled first. Last edited by Southpa; 11-05-2002 at 09:12 PM.