Lamar

Mine is a June Build date. Without trailer it is smooth as can be! And driving with trailer it’s smooth too. Holding back a big heavy load about 14k pounds towing or more when downshifting is when it is starting to show some issues. I have 1000 miles on my truck and it seems this issue just started to become something new that was not there the first few hundred miles. Everyone in my truck feels it. This issue is not just me saying a little miss-shift, it’s very abrupt and concerning!

I am a new Owner of the 2020 Chevy 3500 Duramax with the 10 speed Allison. I have loved the pulling of this new truck under power. It always seems to be in the right gear. But! Downshifting has been not so great! I’ve had some real hard downshifts, so bad that I thought my fifth wheel Anderson Tripod was coming off the truck. So new buyers, keep your eye open on the web. We might be jumping into these 10 speeds a little too quickly?