Here's How you can fit 37s on a LEVELING kit on the 2020 DURAMAX!
Follow
2020 Chevy Silverado 3500HD High Country 2.5" Suspensionmaxx Leveling kit which drops the diff about an inch Cognito Upper Control Arms 37x12.50 Toyo Open Country RT Recon Cab Lights Retrax Pro MX