I have a 2001 v8 4.7 with electric “four wheel drive”. I recently got stuck in four wheel hi and was unable to shift out, looking I found a disconnected vacuum hose on t case actuator. I took the black actuator cover on (t-case one) and had the spring gear fall out and mud after throughly cleaning my face and black cover with contacts and motor. I put it back together and now hear it click into place and got outa four hi but now won’t shift into four low it would grind. Then today while using four hi all four wheel drive lights are blinking and stuck in four hi. Does anyone know the timing for that gear or how to fix this, I found a form with a pic but it will not load and shows up as a caution symbol. Please help this is my frist truck and had 315000 miles on it.