Fusible Links; Power Windows And Other Power Options; Fuses And Circuit Breakers - GMC 2010 T-Series Owner's Manual

Fusible Links

A fusible link is a short piece of wire that is covered by
an insulated cover. It is several gage sizes smaller than
the circuit it protects. It will melt in an overload situation,
opening the circuit.
The starter and other circuits have fusible links. The
size is printed on the insulation. If the insulation is
burned beyond recognition, consult your dealer/retailer
for the proper size. Replace a fusible link with one of
the same size and insulation type. Fusible link
insulation is a special purpose high-temperature
material.
Power Windows and Other Power
Options
Circuit breakers in the fuse panel protect the power
windows and other power accessories. When the
current load is too heavy, the circuit breaker opens. This
protects the circuit until the current load returns to
normal or the problem is fixed.

Fuses and Circuit Breakers

The wiring circuits in the vehicle are protected from
short circuits by a combination of fuses, circuit breakers,
maxi-fuses and fusible links. This greatly reduces the
chance of a fire caused by an electrical problem. There
may be a fuse taped to the wiring harness near the
hydraulic brake booster.
Before changing a fuse, turn the ignition off and set the
parking brake.
5-77