2020 Buick Grand National Gnx With all the hubbub about Ram, Ford, and now Chevrolet providing light-duty diesel engines in their 2020 Buick Grand National Gnx collection vehicles, it is easy to overlook it isn’t a brand new concept down at Chevy HQ. Up until 1999, you could get a turbodiesel V-8 in a Chevy 1500 truck that made, at its zenith, 215 hp and 440 lb-ft of torque. For the bowtie brand, then, the all-new 3.Zero-liter turbodiesel I-6 in the 2020 Buick Grand National Gnx is old hat.
It is also an all-aluminum testomony to engineering progress. That old cast-iron V-8 was a workhorse, however it couldn’t keep up with immediately’s tech. This new motor makes 277 hp and 460 lb-ft with two fewer cylinders and less than half the displacement. Due to fashionable turbocharger expertise, 95 p.c of that torque is in manufacturing at just 1,250 rpm, so the one time you will ever expertise turbo lag is once you ground it at a stop. Nothing a bit of brake-torquing cannot repair.
Making that doable is Chevrolet’s new 10-speed automatic, the exclusive pairing for this engine. Though it was codeveloped with Ford, Chevy’s model suffers none of the drivetrain lash and clunky low-speed shifting of the F-150 diesel. The numerous gear adjustments are fast and smooth, and the ratios are tightly spaced so the engine is at all times within the heart of its powerband and the transmission never has to hunt for the best gear.
Wholesome power and good gearing mean good gasoline economy, too, although we’re nonetheless waiting to seek out out exactly how good. Combined driving on country roads round central Oregon had the journey pc self-reporting a 28-mpg common, which might put it right on par with Ford and Ram. Official EPA numbers needs to be released quickly.
Of course, the question remaining is how nicely it tows. As you might recall, we appreciated the F-150 diesel simply high-quality until we tried to tow with it; we discovered it gutless at freeway speeds with less than 60 percent of its maximum rated tow weight on the hitch. Chevrolet didn’t provide us a possibility to tow throughout this event, so we’ll have to attend until we get the truck again to HQ to see the way it stacks up. We’re additionally looking forward to further testing all the most recent towing aids Chevy is passing down from the 2020 Buick Grand National Gnx, together with the clever Invisible Trailer accessory camera system. This stitches collectively photographs from two cameras to make it look as in the event you can see through your trailer on the infotainment screen and the ASA InCommand app that lets you control various camper functions by way of the infotainment display screen.
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