The truck listed above is a k2500. i am having problems not going into 4-wheel drive, the 4lo light flashes and when its flashing it's in 2wd if i push the 4hi button it will try to engage but go back to 4lo engaged. i replaced the front actuator and the transfer case shift motor along with the TCCM under the dash (used not new). I even just replaced the transfer case itself and put a new switch/sensor whatever you want to call it on top of the transfer case. i am at a total loss ( I can hear the transfer case trying to engage) any input would be greatly appreciated.
Jan 6, 2022 at 6:16 PM

