why does my headlights go out after 30 sec

Asked by Feb 10, 2016 at 12:44 PM about the 1994 GMC Jimmy 4 Dr SLE 4WD SUV

Question type: Maintenance & Repair

my lights go off after 30 sec of being on and wait a min after switch has been
off they will sometmes come on

3 Answers

380

You need to do some testing when problem is ongoing, check voltage and ground for the headlamps. At the moment, I can't rule out the headlamp switch or dimmer/multifunction switch or the wiring circuits. You can usually use a jumper to bypass component, to see if system will start working. Intermittent issues can be a pain to track.

380

If you want wiring diagram, holler, I'll see what I can find.

71,335

Head light switch has gotten repeatedly hot, burnt out, just replace the head light switch.

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