2005 GMC Sierra 2500 HD My 4wd is not working. I have a 6.0 auto trans. Manual transfer case. The indicator light comes on. The front driveshaft is spinning. The actuator sounds like it is engaging. Can hear motor in it. Not getting anything at the wheels.
My 4wd is not working. I have a 6.0 auto trans. Manual transfer case. The indicator light comes on. The front driveshaft is spinning. The actuator sounds like it is engaging. Can hear motor in it. Not getting anything at the wheels.
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where are the vacuum lines located? What do they operate?
This system does not use vacuum to engage 4x4!!