Howdy,
I have the 4-button (2HI, 4Auto, 4HI, 4LO) system in my ‘98 K2500 Suburban and am having issues shifting from anything 4 back to 2HI. I have no problems shifting from 2HI to anything 4, but after driving in 4 for about 50-100yds the “Service 4WD” light appears in the cluster, although...