Draw a long rectangle for the truck body
Add a smaller rectangle on top for the cab
Draw a smaller box shape at the front for the hood
Add two large circles near the bottom for the wheels
Draw two smaller circles inside each wheel for the hubs
Connect the cab and body with straight lines
Add a window shape in the cab
Draw a door line on the cab
Add a front bumper line
Draw a side mirror on the cab
Add a cargo box or trailer shape behind the cab
Draw a few lines for details on the truck body
Outline the truck with a dark pen or pencil
Erase extra sketch lines
Color the truck as desired