2007 chevy 2500hd classic 6.6 lbz
I have a 2007 lbz and I can not get the front axle to engage when I try to put it into 4hi or 4lo. The 3 button switch on the dash flashes when it's in 4hi and 4lo and it will pop up the service 4 wheel drive light. The 2wd light is solid. I can hear the transfer case motor shift. I have so far cleaned the body ground by the drivers door, replaced the front actuator, replaced the push button switch. I can hear the front actuator but it will not move. I have also done an ohm test on the 4 wires from the actuator to the connector on the wheel well liner and then from that connector to the transfer case control module. All the wires are showing very little to no resistance.