Service 4wd

[EthanW50]

Hi guys have a 2014 Silverado 1500 5.3 recently I had my service 4wd light come on and I can not go into any 4wd only 2wd works when it first came on the light came on for a few start ups than my 4wd worked than the next day it went out and the service 4wd light came back on what are the common issues I should check for it to fix it?

[steelerdude15]

I would start by cleaning the ground for the system and making sure it’s on tight. If I remember correctly, that ground is below the driver side door on the bottom of the vehicle.