Serivce 4WD Light on After Dash Removal

[StandoutAlpha]

Serivce 4WD Light on After Dash Removal [SOLVED]

[SOLVED] <-----------------------
**Had 2 wires mismatch and plug in wrong**

Took my whole dash apart to replace the AC Evaporator core.
Got everything put back on now Service 4WD light is on and the 4x4 switch control light is flashing/blinking kinda dim and stuck on 4HI Lock and wont change.
Car drives fine still in normal 4HI mode as I never changed it before the dash removal.

What could be the cause?

 

[JPaul]

Looks like the button for 4hi locked might be pushed in. They can stick after a while due to age and grit. I'd take the panel back off and spray out the switches with some electrical contact cleaner. You can get it at any auto parts store or Walmart. Make sure the buttons have a good smooth action, they should easily pop back out after being pushed in.

 

[StandoutAlpha]

Already checked its not. Im thinking

1. I must've forgot to plug a wire in
2. Bad 4HI - 4HI LOCK - 4LOW LOCK switch
3. Bad Transfer case module

But why would those two go bad? It was good until I removed the dash and put back in

 

[650Hawk]

The fact that it occurred after the dash R&R points to a wiring issue; either a loose or un-plugged plug or a pinched wire. I'd be really surprised if it was a switch or TCM going bad; too much of a coincidence timing-wise.

 

[StandoutAlpha]

Turns out I had 2 wires mismatch plugged in wrong. Now its back to normal and working again.

 

[H3ALPHA4LIFE]

Which plugs? I have the exact same problem but I can't find anything unplugged, pinched or whatever. I also don't recall there being another plug like the 4 wd modules plug being anywhere close so that they could be switched. Any guidance would be great.

 

[StandoutAlpha]

I had a Chevy dealership fix it and didn't ask which wire it was but check out the black AUX look alike cord behind the glove compartment area. That will be the only cord that has two plug ins but look the same, every other plug is color coded or goes in one way only. Service writer said something about the navigation/radio 5volt wire was plugged into the 4x4 switch which is a 12volt and vice verse, could be the radio antenna that's hes talking about the only wire I can think of.