Question about Cars & Trucks
Sound like faulty dimmer switch.
Posted on Apr 21, 2013
Turn on the low beams and check to see if you have battery voltage at the connectors, if not, check the fuse panels for a blown fuse, if all the fuses check out Ok, The next step is to check the high beam switch, called a multi-function switch on the column. It's not that common for the headlight switch itself to fail, however, the main connector to the headlight switch can and do fatigue, sometimes even melt due to a poor connection. I would check for that first as it is a common problem. Your wiring diagram will give you the wire color codes so you know which wire to test.
Posted on Apr 21, 2013
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Posted on Jan 02, 2017
if it is not the bulb, try testing the connector where the bulb hooks into. my driver side is out but like urs the high beams work but not the lows.
Posted on May 11, 2009
SOURCE: the low beams of my
mdsarnes, The first thing that I would check is the fuse for the low beams located in the engine compartment power distribution box. (Fuse box) GM does have a legend written right on the cover so you know which fuse to check. Also, when the low beams are on try and wiggle the connectors to each bulb. If these dont work, replace one bulb and see if it works. If it does then take the same bulb and try it on the other side. If you have a test light then you can test for power at the plugs before you purchase any bulbs. Good luck with this.
Posted on May 22, 2011
my suggestion is that you check/ replacr the HDM(headlight driver module) relay in the main fuse box located under the hood near the battery.
Posted on Jul 30, 2011
Possibly the bulbs. Take a look at them; they have 2 coils per bulb, one for the low beam and one for the high beam. So it is possible that the more used low beam burns out before the lesser used high beam.
Posted on Aug 19, 2011
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