The Sierra is essentially a Chevrolet Silverado.
Power delivery is smooth and responsive, and fuel economy is 17 mpg overall for the 5.3-liter, V8 engine crew-cab four-wheel-drive version.
The ride is stiff and snappy, but the cabin is very quiet.
Handling is sound and secure.
The infotainment system is easy to use.
Rear-seat room in crew-cab versions is immense, but the high step-in requires a climb.
Helpful options include a power liftgate that can be opened using the key fob, a tailgate that can be configured into a workbench, and power running boards can shift back to help reach the bed.
The luxurious Denali version has a 6.2-liter V8 mated to a 10-speed automatic.
Blind spot warning and automatic emergency braking are optional on higher trims. Updates for 2020 include an available 3.0-liter turbodiesel six-cylinder engine paired with a 10-speed automatic transmission.
The diesel pulls strongly, feels refined, and returns 23 mpg overall.
Other changes for for 2020 saw suspension tweaks improving the ride, and the availability of adaptive cruise control.