2007 gmc 1500 4wd not working. service light on and lights on switches are off. truck in 4 low

check oil level low or no oil causes no start so does --your oil sender may have failed --oil sender also has a screen filter which causes low or no pressure =oil pump problem ==the truck wont start or may start and shut off immediately

Often lights under a dash or indicators just blow out bulbs. If more than one thing isn't lighting and are centralized check fuses to see if its blown. Bulb or fuse. IMHO. MIGHT be a sensor on tranny too. Hope not.

Here's a video with detaile dinstrauctions and other people's fuse questions. New fuses?

Kind Regards,
Scott

Interior Fuse Box Location 1999 2007 GMC Sierra 2500 HD 2004 GMC Sierra...

Amazon com Fuses Fuses Accessories Automotive

2004 GMC Sierra fuse box Questions

Kind Regards,

Scott

HEADLIGHT SWITCH

checa la palanca de cambios de luces

Check the motor on the transfer case

PROBLEM COULD BE IN THE 4WD SWITCH IS FAULTY OR THE SWITCH WIRING SHORTING TO GROUND

Have the switch checked our

I have this problem too, from time to time, it won,t act up for the dealership, when the service message is on I can shut the truck off and come back later and the hubs have turned in and the service light is off and the 4 wheel is fine, it is a '07 gmc 2500 hd

try disconecting the battery to reset service light may not solve the problem but should allow u to put truck into 4 wheel

i would try replacing headlight switch....