No AC

Do u have wheel chocks

 

Years ago, I was told that on Schneider trucks it was under the 5th wheel. Just remembered that

 

Are u sure u dont have an opti idle system

 

Not an override switch but an opti idle system . Its where u leave the key in the on position and truck starts and stops on its own. Take a pic of ur dash and steering wheel controls

 

Hopefully you called and had them walk you thru setting up the truck to idle. So you know it broken or how it should work. Like you need the parking brake set. If you trying all these different things vs the way it should work from the start something might not bet set like the parking brake.