4 wheel drive

Hello Tahoe family, Please help. I have a 2004 Tahoe, the "Service 4WD" light came on. I checked the oil on the transfer case and it's good. Few months ago, I had the transfer case replaced due to the typical hole caused by the pump. I replaced the 4WD transfer switch and still have the warning...

Hi all i have a 96 tahoe 4 door 4 wheel drive. with manual linkage 4x4 shifter. recently the front axle would not disengage, i thought it was the actuator on the front diff so i replaced it while i had it out i checked that the fork in the diff was functioning properly and it is ( press it in...