going to need a serial number first for anyone to get you the right manuals.
Check on the right side of the motor compartment on the frame around where the hood rests and see if one is stamped in the frame there. If not there then it may be stamped on the front of the truck, on the fender or front cowl.
Cats usually serial number configuration is a letter, some numbers, another letter followed by more numbers. Generally a 9 digit or more designation.
This is ONLY to be used to report flooding, spam, advertising and problematic (harassing, abusive or crude) posts.