See Figures 1, 2 and 3
Fig. Fig. 1: View of a typical model plate located on the firewall
Fig. Fig. 2: Typical model plate found in the engine compartment to the right on the firewall
Fig. Fig. 3: Typical emission control certification label found in the engine compartmentthis label also contains tune-up information
The model plate, containing the truck model, engine model, engine displacement and chassis number is riveted to the right rear corner of the engine compartment on the firewall.