Firebird V8-350 5.7L VIN P SFI (1996)
Special Tools
Circuit Breakers
A circuit breaker is a protective device designed to open the circuit when a current load is in excess of rated breaker capacity. If there is a short or other
type of overload condition in the circuit, the excessive current will open the circuit between the circuit breaker terminals. There are two basic types of
circuit breakers used in GM vehicles: cycling and non-cycling.
Cycling Circuit Breaker
The cycling breaker will open due to heat generated when excessive current passes through it for a period of time. Once the circuit breaker cools,
it will close again after a few seconds. If the cause of the HI current is still present it will open again. It will continue to cycle open and closed until
the condition causing the HI current is removed.
Non-Cycling Circuit Breaker
