It's a Chevy HHR 2006 and I don't know what to do. First one low beam went out now both are not working but both high beams are working. What do I do?
Does it have an auto lamp switch? If so you could have a faulty light sensor or switch try manually turning them on
This is most likely blown bulbs. Each bulb has 2 filaments in it, one for low beams and one for high beams.
Since the low beams failed at separate times and the high beams are still working, it is less likely you have an electrical fault, and more likely the bulbs failed because they were from the same production line, same usage stats, etc.
You local auto parts store should have an applications guide to tell you which bulbs are the correct type for your application.
This is for old Chevy Trucks (1972 Blazer in this instance). On the back of the fuze box, on the other side of the firewall (under the hood) is the pass-thru of the wiring harness. If this is loose, then the contacts may open and the circuits of headlight control are inop.