not driving smooth specially in corners and bumpy roads
It’s a fairly common complaint. https://www.silveradosierra.com/suspension/2014-gmc-sierra-rough-ride-on-concrete-highway-t326858.html How long have you owned the truck? Is this a new problem? You may have to simply live with it until you can buy something else.
How many miles on the truck?
It’s a pickup truck. It’s not going to ride like a Cadillac.
Check the stabelizer links if applicable.
Denali’s had magnetic ride which rides better but at a cost when you need new shocks.
Recent issue? Did it last year? 2 years ago?