Quote:
Originally Posted by Kbg615
I have a 2009 silverado 1500 z71 5.3 V8. The truck will not shift into 4x4. When I try to go into 4hi the light in the twist knob just blinks and then says service 4 wheel drive. When I go into 4lo the truck goes into lo gear like it is supposed to do, but the wheels won't engage. The 4x4 light never shows up on my dash like it has engaged. Can anyone help me?
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1st thing you need to do is get the Transfer Case Control Module (tccm) codes read. My first guess would be an encoder sensor problem. Without a code though, it's just a guess.