I just picked up a 99 K2500 Suburban with the auto 4wd. The service 4x4 light is on and the dash lights don't come on. I know it's probably the actuator, the switch or the encoder motor. I have another switch and encoder motor but I don't have a spare actuator. I was thinking of just buying a posi-lok because 2-lo would be nice but all the listings say 88-98. Can it be made to work in a 99? If not I might have to swap out the NP241 and shafts that I pulled from a 94 suburban.