I'm not trying to be sarcastic, but your question states "how long CAN it last". It can last the life of the vehicle. Like any electrical component, it could last a day or it could outlast the vehicle itself.
It has no relay.
That 92 GMC van doesn't have a relay for ignition. Power for the ignition is supplied from the ignition switch.
no such relay.
There won't be a relay for the ignition. You may have a "blown" fuse.
The ignition relay is under the air filter box on the right hand side
If the indicator relay is buzzing when the ignition is off, it may indicate a short circuit or a faulty relay. This can cause the relay to remain energized even without power from the ignition. It's advisable to check the wiring connections and the relay itself for any signs of damage or malfunction. If necessary, replace the relay to resolve the issue.
a relay used in the starting of cars..randy niehoff
They can last the life of the car or can fail at any time. There is no real average.
Suburban
If designed properly, indefinitely.
What year lesabre ... Are you referring to the starter relay? yes
Yes