Wrong forum..Stange cold weather activity...
Wrong forum, sorry. Reposted in L5P section.
So my 2017 is running great. Easy starts in the well below zero temps. However I have seen this happen three times only when cold and during the first minute or two of running.
Start in cold ald let run for a minute or two. Put into reverse to back out of driveway. When I go to put it into drive I get no forward movement and the D light on the dash flashes. Had it happen the same except when I put it into reverse. I just shift to neutral and back to drive and off I go. Has happened 3 times over the past 3 weeks of below zero temps. Trans fluid level looks good with fresh fluid.
Any thoughts? From what I was able to find maybe moisture in the neutral safety switch.
2017 Sierra 2500HD Denali Dmax
2011 Silverado 3500HD Dually Dmax
Last edited by Trucklover63; 01-06-2018 at 12:24 PM.