[electricucian]

...diesel it is? 1998 GMC3500

 

[Joey J.]

They have the same blocks since 1994, the only difference is the emmission systems. The 8th digit of the vin will tell you which engine you have. Federal emmissions where vin F, California vin S.

 

[cowgirl_up76825]

as the wife of a mechanic it should be 6500