this is kinda funny the low beams dont work but the high beams work. i replaced the bulbs and check on the fues then did some reseach came to found that someone had the same problem but didnt fix it.
Would this be a expensive thing to get fixed? should i just drive with high beams on and leave it be?"thats what the last owner did i bet" really kinda funny when you buy a truck during the day the headlight where the last thing i was thinking about. It doesnt seem to be a huge deal but I should consider fixing it. I always wonder why i see some people driving with there high beams in town.

 

Happened on my truck before after I went muddin... I replaced the bulb and it worked. Make sure you don't touch the bulbs though just so you know!!! If both of them don't work then it has to be something else. I would try this in the 2nd gen forum and see what you get.

 

Have you tried a new relay? Should be in the PDC under the hood on the driver's side.

 

ok this is wreid but it fixed it self. heres what happen i was out driving this mourning with my high beams on and i stoped for a bite to eat and went back to my truck started the high beams work but wont stay on and now the LOW BEAMS work great! maybe some magic cummins certified truck gnome fixed lol

 

I agree with Jake.
Even though it may be working fine now, I'd replace the relay anyway or at least have one on hand.