I have looked in tons of post and cant find a case like mine so here it goes. 2000 sierra push botton 4x4. When i push 4 hi button the lights blink and it activates the acuator in the front housing but then goes back to 2 hi, push 4 lo and front housing engages then lights go out on switch and service 4x4 light comes on. transfercase does not do any thing. changed the encoder motor on the tranfer case and a new switch in the dash, checked all connections and grounds and still does the same thing can any one help before i burn it. the encoder motor and dash switch were swapped off a mud buggy and mine placed on that truck and mine worked on his
