j code vs c code [Archive] - Diesel Place : Chevrolet and GMC Diesel Truck Forums

: j code vs c code


turbosuzi
08-24-2007, 12:09 AM
how do I know if I have a j code or c code is there marking on the pumps themselves or is it part of a vin #?

okeydokey
08-24-2007, 01:01 AM
the J or C code will be the 8th digit on the vin.

okeydokey
08-24-2007, 01:02 AM
the J or C code will be the 8th digit on the vin.

okeydokey
08-24-2007, 01:03 AM
the J or C code will be the 8th digit on the vin.

dieselolds
08-24-2007, 08:48 AM
It's usually part of the VIN,but is the original engine still in the vehicle or is it a replacement?It's almost impossible to distinguish the difference between C and J code engines by looking at them.You could have a C code intake on a J code engine or vise-versa.You can determine if you have a C or J code injection pump by taking a note of whats on the pump tag.Write it down and let us know what you have.

Colorado Diesel
08-24-2007, 11:08 AM
What is the difference inbetween the c and the j?

Mattster
08-24-2007, 01:15 PM
J Code is non emissions and has a little more power than the C code. C Code has i think 135HP and the J Code has 150HP.

Colorado Diesel
08-24-2007, 01:16 PM
Thanks.