07 Silverado 4x4 pr.oblems
ok where to start. My service 4 wheel drive came on. The light on the dash nobe is not on. I checked all fuses, changed the dash switch. still not working. checked voltage in actuator yhe only one i was getting a reading from was the pink wire even when i changed it into 4hi. Dont know if that is normal, didnt get any voltage readings from any of the other 3 wires. So i went and bought a actuator and changed that. Still not working.
Any solutions to trouble shooting from here would be appreactated. thanks
need a scan tool to the codes just as you do for engine diagnostics, even if actuator was the prblem you need to clear codes and reset system for to work properly
The problem was actually the TCCM. I change that out and got the truck re flashed at the dealer. The flash cost me 1 hour of labor. 4x4 works now and the other good thing is I know all the parts are new. Lol
Thanks for your input. Ya the truck needed to be re programmed. You were correct with your suggestion .
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