An all-new chassis and rack-and-pinion steering do wonders for the Sierra’s road manners. At times it barely felt like a truck, such was the smooth ride and quiet cabin. This may be the most mannerly truck we’ve ever driven. On corners, it sets up nicely, with less sway than you’d expect. Dirt road driving under load and empty was remarkable. The Sierra kept its footing with little hop or shudder even at speed, and absorbed many ruts and bumps that would rattle other trucks. When we dialed in a steering correction, the truck responded promptly and accurately. Overall, the ride and handling is where these trucks really shine: Quiet, with a comfortable ride and improved steering, it may offer the most composed behavior in its class.