While we’ve only been treated to the briefest of glimpses at the new Sierra’s exterior, spy photogs have now captured clear views of its restyled interior.

Like its Silverado brother that appeared in time for last month’s Detroit Auto Show, the Sierra will get a major redo for 2019. It’ll undoubtedly mirror the Chevy in layering on new technologies and refinements in a bid to keep up with the pickup truck Joneses.

READ MORE: 2019 Chevy Silverado Gets 3.0L Diesel, Loses Over 400 Pounds

There’s a good chance the mule we’re looking at here is not a top-of-the-line model, given its old fashioned twist-to-play ignition key and lack of dual climate control. This bench seat equipped model has a baseball bat of a shifter sticking out of the steering column. The tip of the shifter is devoid of a Tow/Haul button.

The rest of its interior largely apes what we’ve seen in the new Silverado, with a large infotainment screen flanked by slim air vents. Redundant volume and (hopefully) tuning controls for the radio are set below the touchscreen, plenty large for tactile use while wearing work gloves.

A bank of switch-like buttons line the very bottom of the centre console, controlling hazard lights and traction control in this mule. The shots also tell us that GM engineers hate auto start/stop as much as we do, as the driver here is shown as having that feature rightfully switched to the off position.

Given that only the 6.2L and 3.0L diesel will have start/stop, this mule must have one of those two engines. No tailpipe is visible to help us determine which one is present here. However, if the spec of this truck is any indication, it means that one (or both!) of those engines will be available on mid-range models, which is great news.

Exterior shots tell us nothing beyond what we’ve seen before, suggesting a much blockier appearance than the Silverado. The G M C badge appears to be mounted high on a billboard-sized grille. Prominent LED running lights front and rear look to be standard even on mid-range models based on these new photos, while high-end Denali versions are expected to get a full-LED setup.

Viewed from the side, we once again see the extremely odd kinda-square but also kinda-rounded wheelwells. It’s a square and a circle. I’m calling them squircles. GM’s simple yet clever bumper corner steps are on clear display at the rear. And are those Rancho shocks? It’s tough to tell but the rear units are beefy and slathered in white paint with bright red lettering, a Rancho trademark.

Like the Chevy, the GMC will get a brace of V8s, a 5.3-liter and 6.2-liter. The big V8 and the new 3.0-liter inline six turbodiesel will also benefit from start/stop technology as mentioned. It is likely base models will continue with a six-speed automatic and go up to a 10-speed auto on diesel and 6.2L models.

The Sierra will be shown at a special event in Detroit on March 1. Be sure to check in with us for all the details.