Been lurking awhile, 1st time posting..
Been searching past threads,cant really find anything to help me out.
Ok: 2007 1500,QC SLT 4x4 with 140,000 miles.. About 3 months ago the SERV 4WD
light popped on & has been randomly popping on every since. Some days itll come on soon as I start the truck, other times it may not come on at all. Whats strange is there seems to be a voltage drop-I can tell when the light is fixing to come on, because the fan/ac compressor will momentarily shut off,,the headlights dim & the inside dash cluster & the cup holder light all dim as well.
Sometimes, everything will start to momentarily dim, go back to normal, & repeat several times before the light comes on, or it may not..
Being that the 4wd is disabled while the light is on, I'm wanting to get it fixed,but I dont want to buy an $120 actuator & it not solve the problem.