Which pliers should a technician own first?
Short answer: Most technicians start with slip-joint or tongue-and-groove pliers, needle nose pliers, diagonal cutters and locking pliers, then add specialty pliers as jobs demand them.
A basic pliers set covers a surprising number of jobs. Tongue-and-groove pliers grip hoses, fittings and round parts in several sizes. Needle nose pliers reach into tight spaces for clips, cotter pins and connectors. Diagonal cutters trim zip ties and wire. Locking pliers hold parts steady or grab a rounded fastener as a last resort.
After the basics, add hose clamp pliers, snap ring pliers, trim clip pliers and long-reach versions as your work requires. Comfortable, non-slip grips matter if you use pliers all day.
Pliers are not wrenches. Using them on nuts and bolts rounds the corners and makes removal harder. Wear eye protection when cutting wire or spring steel, since pieces can fly, and never use pliers as a hammer or pry bar.
Tools used for this job
General guidance only. Follow the vehicle and tool manufacturer's procedures, and confirm vehicle coverage on the tool maker's list before buying.