GM Full Size Vans 1987-1997 Repair Guide

Circuit Breakers


One device used to protect electrical components from burning out due to excessive current is a circuit breaker. Circuit breakers open and close the plow path for the electricity rapidly in order to protect the circuit if the current is excessive. A circuit breaker is used on components which are more likely to draw excessive current such as a breaker often found in the light switch that protects the headlight circuit. Circuit breakers may be found in various locations on the vehicle on/in the protected component, on a firewall bracket, the fuse block or in the fuse relay center in the engine compartment.


Locate the circuit breaker on the fuse block, then push the circuit breaker in until it locks. If the circuit breaker kicks itself Off again, locate and correct the problem in the electrical circuit. The windshield wiper motor has a self setting circuit breaker built into the motor assembly. This breaker is non-serviceable and requires replacement of the wiper motor unit if defective.