[j cAT]

Originally Posted by dakota1205

After driving my 2000 z71 5.3L, the "service 4WD" light comes on. The 2wd button is lit, it will switch to 4wd, it will not switch out of this position. I keep pushing 2wd, auto buttons, nothing, still stuck in 4wd. Turn off engine, start back up, keep pushing same button, finally pushing auto button, it will go to auto, then push 2wd, it will go there.

Other times, when service light not on, all buttons work fine, it goes in and out of four wheel drive, hereing the actuators under vehicle switching.

Any ideas on what may be going on?

with the service 4wd light on intermittently this is usually the dash switch. I removed this switch then re soldered the switch pins to the circuit board. takes about 45min to do ..

if it does not correct this get failure code pulled and post here .