Q: how do i locate and replace the 4wd sensor switch. on 1998 GMC Jimmy

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
it will shift into 4wd hi when slowing down from hwy speeds to under 45 mph. I then have to pull over shift it into nuetral push 2wd switch and return to drive then its fine. its annoying and sucking major gas. help!!!!
(2) Answers
There is a vacuum switch on top of the transfer case that is defective, replace it and problem solved!!
Just fixed mine, had the same thing going on. NAPA part # 7301639. Tough repair without a lift!!
Vacuum is what actuates 4x4 system!
Qualified Local GMC Shops
Qualified GMC Shops For This Repair