why won't my bright lights come on

Asked by Larry Oct 16, 2014 at 12:02 PM about the Chevrolet Silverado 2500HD

Question type: Maintenance & Repair

replaced both bulbs, no power to light switch and no power to the fuses.  when you turn  
dimmer switch on to bright the light indicator comes on dash, the fog lights go off like they
suppose to but no bright lights come on . every other lights come on and work just
fine.could it be the dimmer switch gone out already..2007 chevy silverado HD 2500

10 Answers

51,265

Your switch may be bad. The fuses are after the switch.

5 people found this helpful.
90

I would love to know if you figured this out. I have changed all parts and the symptom still exists.

2 people found this helpful.
51,265

Jwfishing, Bothe high beams fail to come on? Have you tested to see if there is power coming to the light sockets? If so, the ground or sockets themselves may be corroded or bad. If both lights fail to come on, it may be a disruption before the lights, like a broken wire? Are you sure the bulbs are good? It'd help to know what was replaced, the make and year of vehicle, and if you live in snow and ice country in the winter. Salt corrosion can play havoc with a lot of electronic devices, as does the extreme cold.

3 people found this helpful.
90

Hello John. Thank you for the prompt response. I have changed the headlight switch and the signal \ dimmer switch on the column and the Relay in the fuse box. I have been trying to get a decent schematic to trace all of the wiring. The DRL and the Fog light works as designed. With the fog lights on, they will turn off when the column switch is set to bright. The bright light indicator works on the dash panel. I remove the DRL fuses and the low beams do work from the headlight switch. I am guessing that there is a line break somewhere. The bright bulbs do appear to be good.

5 people found this helpful.
90

I guess I missed the biggest question. 2008 Silverado 1500 LT

2 people found this helpful.
51,265

If you can, see if when the high beam lights are turned on, there is power at the light bulb connector. If not, than work towards the relay or fuse until you find power. Than you will know from that point to the bulbs, there is a bad wire. Bulbs may look good, but if you have a known working bulb, put it in. Stranger things have occurred.

1 people found this helpful.
30

Did any of you figure this out? Seems I have the same problem on my 2005 Chevrolet 2500hd, both high beams quit and just a bunch of dead ends... on the high beam relay I don’t have the same power to one of the pins. .3volts like I do on the low beam relay pin.

3 people found this helpful.
30

I had the same problem on my 2010 Tahoe. Ended up changing the whole fuse box under the hood. Apparently there is a relay built in the circuit board that went bad. $189 fix that was actually pretty simple.

3 people found this helpful.
10

Where is the circuit board locates?? I have the same problem. Thanks

1 people found this helpful.

Your Answer:

Silverado 2500HD

Looking for a Used Silverado 2500HD in your area?

CarGurus has 1,279 nationwide Silverado 2500HD listings starting at $9,990.

Postal Code:

CarGurus Experts

  • #1
    GuruXPQGJ
    Reputation
    1,430
  • #2
    Reelin68
    Reputation
    1,200
  • #3
    Steven Loeffler
    Reputation
    1,160
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used GMC Sierra 2500HD
13 Great Deals out of 1,617 listings starting at $10,800
Used Chevrolet Silverado 1500
195 Great Deals out of 5,967 listings starting at $2,975
Used Ford F-250 Super Duty
24 Great Deals out of 1,201 listings starting at $8,995
Used RAM 2500
55 Great Deals out of 2,192 listings starting at $14,962
Used Chevrolet Silverado 3500HD
10 Great Deals out of 891 listings starting at $19,495
Used GMC Sierra 1500
143 Great Deals out of 7,206 listings starting at $3,950
Used Dodge RAM 2500
24 listings starting at $9,975
Used Ford F-150
321 Great Deals out of 15,103 listings starting at $1,712
Used Ford F-250
6 listings
Used Ford F-350 Super Duty
35 Great Deals out of 2,591 listings starting at $8,888
Used GMC Sierra 3500HD
17 Great Deals out of 1,391 listings starting at $11,950
Used Toyota Tundra
34 Great Deals out of 1,190 listings starting at $8,500
Used RAM 1500
457 Great Deals out of 15,784 listings starting at $5,000
Used Chevrolet Tahoe
20 Great Deals out of 904 listings starting at $11,900

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.