Check fuses. Low and high beams are on separate fuses. As far as dash, check fuses, if fuses are good, check light switch and ground wires.
Sounds like two separate problems. For the headlight, check the headlight relay in the underhood fuse box (may be more than one if you have DRL), but may also be the headlight switch. For the dash lights, there may be a dead spot on the brightness control. Rotate it a few time to see if that fixes the problem.
SOURCE: LOW BEAM LIGHTS
Hi Rich Million,
Check the bulbs for the low beam problem and if they're ok, check the fuses under the bonnet (hood) which are found in the fuse box. If you've already checked those, go to the fuse box inside the vehicle.
Still no luck....remember that there are fuses and relays inside the cabin behind the kick panel.....You may find that there is a problem with the main fuse box.....If you drive over rough terrain, check the connections under the main fuse box....even if your roads are all smooth, it's still worth checking.....
Regards Johngee10
SOURCE: REPLACEMENT OF [LOW BEAM] HALOGEN BULB IN 2004 Buick LeSabre
I just Replaced a Low Beam Light bulb on a 2005 Buick La Sabre.
If You use a Metric socket and Remove the Two Silver bolts Attaching the headlight Assemble onto the metal surrounding the the lamp assembly it comes out to the front. This makes it much easier to access the bulb. Twist it counerclockwise & it comes out by pulling gently on the bulb. Then by realeasing a tab that is the socket holder bulb can be removed & replaced with a New #9006 low beam halogen light bulb. Wrap a Paper towel around the bulb & do NOT touch it with your bare hand as this wiil ruin a halogen bulb,
SOURCE: 2002 Buick Regal High Beams go out
light switch is probably defective - more power is being used on hi-beams causing breakdown in switch - get replaced
SOURCE: 1992 buick lesabre no dash lights but all other
It might just be a fuse look at the fuses and check them.
SOURCE: 91 300zx, no low beams or low beam light on dash
Check fuses and headlight relay in engine bay on driver side inner fender
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