ok guys..i have a 98 EB expy. 229000 mi. almost cherry! cept this...TODAY it started doing this...EVERY light pertaining to 4wd will illuminate (A4WD, 4HI 4LO, LOW RANGE) while driving, relays click and WHILE DRIVING rpms will bog down because it literally DID just shift into 4LO. concerning, no? now, i am mechanically inclined, i was ASE certified until about 6 yrs ago but since then i just do my own vehicles. but this one has me scratching my dome. im *somewhat* familiar with 4wd on these trucks, but not a lot. to save my transfer case n other 4wd components i tried pulling fuse 23 in CJB and fuse 17 in BJB. from my understanding, and according to identifix, fuse 17 in the power distro box controls the t-case in its entirety, correct? or am i misunderstanding it? the reason i ask is because even with both those fuses pulled she STILL does it... think ill just disconnect the connector @ the t-case until i figure this out. and PLEASE don't tell me this is the dreaded GEM problem...wouldnt i have more problems if that was the case though?