The 2019 GMC Sierra lineup eventually will include regular, extended, and crew cab models, turbo-4 engines and 6-cylinders and V-8s, 6- or 8- or 10-speed automatic transmissions, and a choice between rear- or four-wheel drive.

Our 7 out of 10 score here is based on its customizability and its standard touchscreen infotainment system. (Read more about how we rate cars.)

The 2019 GMC Sierra comes in base, SLE, Elevation, SLT, AT4, and Denali trim levels. Every one comes with power locks, air conditioning, and an AM/FM audio system with Bluetooth audio streaming and a USB port, as well as Apple CarPlay and Android Auto compatibility. Base GMC work trucks have vinyl floors, cloth upholstery, an unlined bed, and the V-6 engine with 6-speed automatic. Options include LED bed lights, cruise control, power mirrors, and keyless entry.

A better version for daily truck drivers is the Sierra SLE, which adds more USB ports, power mirrors, a lift-assisted tailgate and an 8-speed automatic; a power driver seat, keyless ignition, remote start, and a trailering package can be fitted.

An Elevation trim level sports off-road appearance bits such as body-color trim, 20-inch wheels, and with an X31 Off Road Package, useful gear such as a locking rear differential, Rancho shocks, hill descent control, skid plates, and a two-speed transfer case for its four-wheel-drive system. It will be sold with the turbo-4, 5.3-liter V-8, and turbodiesel engines. Options range from power front seats to the trailer package.

Our pick in the 2019 Sierra lineup comes in SLT guise. It gains automatic climate control, a high-definition rearview camera, satellite radio, a 10-way power driver seat, leather upholstery, LED headlights, and the six-way tailgate. It can be equipped with cooled front seats, navigation, wireless smartphone charging, premium audio towing and trailering packages, and heated rear seats.

The off-road specialist Sierra AT4 truck gets a 2-inch suspension lift, a two-speed transfer case, skid plates, a locking rear differential, Rancho shocks, 18-inch wheels with all-terrain tires, and hill-descent control, as well as aluminum interior trim, two-tone leather upholstery, and a choice of V-8 or turbodiesel engines. The carbon-fiber truck bed comes as an option, but it’s not yet available; navigation, trailering gear, a head-up display, and wireless smartphone charging are available.

At the summit of the GMC Sierra lineup, the Denali ladles on standard equipment. It has a standard digital display integrated in the gauges, front bucket seats with a center console, leather upholstery, chrome exterior trim, open-pore wood trim, and an 8.0-inch touchscreen with navigation. The latter system has a clean interface with maps that need more contrast between the drive route and other roads; its blue-on-green route readouts can be difficult to follow on the fly. Its options include power side steps, 22-inch wheels, a surround-view camera system, and a rear camera mirror.

GMC also offers a trailer camera system that toggles through modes. With an accessory camera mounted on a trailer and connected to the truck, drivers can monitor traffic to the rear, the state of the hitch connection, even objects in the bed. It’s one of the Sierra’s trick new features that makes higher-priced models worth a long look.

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