All GM dealers must use genuine GM fuses on the vehicles they service. You should also encourage the use
of GM fuses to your customers to assure they are getting the proper electrical system protection.
The fuse is the most common method of an automotive wiring circuit protection. Whenever there is an excessive
amount of current flowing through a circuit the fusible element will melt and create an open or incomplete circuit.
Fuses are a one time protection device and must be replaced each time the circuit is overloaded. To determine if a
fuse is open, remove the suspected fuse and examine if the element in the fuse is broken (2). If not broken (1),
also check for continuity using a Digital Multimeter (DMM) or a continuity tester. If the element is broken or
continuity is suspect, replace the fuse with one of equal current rating.
Mini Fuses
