Question about Chevrolet C2500
Check the fuses. If both low-beams went out at exact same time, it is probably the fuse (hopefully not a wiring short).
If they went out with a couple days or weeks of each other, it could just be the bulbs. They typically have very close lifespans and if they were installed at the same time, could burn out near the same time.
If the fuse is good, take the bulbs out. Look for a break in the filament.
Sometimes a fuse can break right at the base and you can't see it and sometimes a bulb can burn out without breaking the filament. If you can't see a break in either, start by replacing the fuse. (You can even take a same sized fuse out of a non-vital electronic (maybe radio, or power windows) and put it in the low beam spot.) If they work, there's the problem. Replace the missing fuse and your good. If not, then replace the bulbs.
Posted on Mar 13, 2011
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Posted on Jan 02, 2017
There are no relays for the headlights. Your problem could be from the headlight switch. You would have to check and see if you have power coming out of the switch on the low beam side. Check with a test light.
Posted on Dec 15, 2008
SOURCE: high beams dont work
Could be that your high beam light's are burnt out and need to be replaced. When you say the the switch is new you mean the lever on the stearing collum is new right?? Good luck
Posted on Apr 06, 2009
Sounds like its a problem with the light switch handle. Had it myself as well...
If you're savvy enough around car electronics take out the light switch handle, take it apart, find the problem and fix it. Inside the handle-switch you have several slide-switches and some double action slide switches.
Otherwise - get a different switch from a local junkyard or get a new one from your dealer.
Posted on Jul 11, 2009
If there is power there, then it has to be the bulbs. The trouble that most people have is, they don't see how both bulbs could burn out at once... and they're right. They don't. But you see vehicles with one headlight all the time. They don't know it unless you tell them or they happen to see it themselves. Then the second light burns out, and they think it's a major catastrophe, when in fact, it's just bulbs. The high beam still works because the bulb is double filament. The only other thing it can be is the dimmer switch, and since you switched it to high, it appears to be working. However, if it's not bulbs, it still could be the switch.
Posted on Oct 07, 2009
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