[eppoh]

How can I tell if i have a CAT or a soot trap, on my 95 C2500 Suburban.
It has an "F" code on the 8th digit of the VIN.
I was thinking about opening up the exhuast.

 

[knkreb]

They are one in the same. Just different terminology. Just like PMD=FSD.

 

[eppoh]

Thanks