ChevyVanMan

Getting 15mph with mine most of the time in the wind, pulling big mower and trailer 12.5mph at 70mph. highest mph in winter time with cold air was 18mph.
Kenny

17 Express 2.8 Diesel

I am guessing you have a pre 2017 noting your join date. Are you getting a lot of wallowing on the highway? It almost sounds like the weak shocks are on the 2017's.

ChevyVanMan

If you are talking to me 2016 Chevy Express 3500 15 passenger LT 3 dr. No problems with it. Is yours a CITY EXPRESS ? Payload Cap is only a little over 2800 lbs.
Thank you
Kenny

17 Express 2.8 Diesel

I have the full size Express 2500 cargo, about 3300 lb payload, 8600 lb GVWR, about 14,000lb GCWR( inc trailer).

StanVan

This has been bugging me after thinking about this thread for a while. What exactly do you mean by "wallowing"?

17 Express 2.8 Diesel

A mushy, softly bouncing up and down after hitting bumps.....like the shocks are worn out. It's not the jarring bounce when hitting bumps with a stiff suspension, but like an old land barge... think 23 foot 1973 Buick or Cadillac.

StanVan

There's a pleasant flashback. I had a '76 Le Sabre 2 dr. Slip and slide with Powerglide. That thing would roll.

17 Express 2.8 Diesel

Then you know the feeling. Never drove something like that regularly...either vans or compacts.

StanVan

That was a bit different. It was made to float like a cloud. Comfy ride was expected.

I think your issue is bad shocks. Which is weird seeing as yours is a year newer than mine. I'd be interested in knowing if yours and mine had the same stock shocks. I think I'm off to a GM parts site to find out.

StanVan

Same springs, same shocks.