Posted 4/17/2019 16:14 (#7444615 - in reply to #7442424) Subject: RE: Trimble Autosteer on Deere 8420
Arkansas
The top of the John Deere valve (I think its called a pilot valve) goes bad sometimes and when that happens you won't get a steering response. I've seen this happen a couple different times on AT ready Deeres as well.