high beams

[mrrooferboy]

what would cause the high beams to stop working on an o2 sierra 2500hd. all other lights work and i checked all fuses that i could find.

 

[happy 2011]

Did you check the bulbs..... I seen many times both bulbs bad.

 

[mrrooferboy]

2 new bulbs and no high beams

 

[Z15]

dimmer switch is usually the reason.

 

[mrrooferboy]

the high beams for my plow lights work. wouldn't they be effected also.

 

[happy 2011]

then you need to check if the change over box for the plow lights get power in and then see if you get power out (for high beams) of the box.

 

[kniki10]

May be there is loose connections at the rear of the headlight, if you dont find it then you can it to a dealer.