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2020 Chevrolet Tahoe, Suburban and GMC Yukon all spied with production lights

One of our spy photographers just caught a smattering of full-size GM SUVs out testing, including the Chevrolet Tahoe, Suburban and GMC Yukon. Previous spy photos of the next-generation of these big GM SUVs have revealed that GM is going with an independent rear suspension design, and these shots confirm the news once again with our best look at the hardware yet. Check them out from the rear, lined up like ducks in a row to see the beefy control arms down there. This will undoubtedly give the big SUVs a more compliant ride, and should bring it back into touch with the refinement from the Ford Expedition and Lincoln Navigator. The new bits we get to see with these shots are production headlights and taillights that are shaping up to look pretty neat. Most distinguishable are the GMC Yukon's LED DRLs. These look a lot like the C-shaped LEDs outlining the headlights on the Sierra, but they have an extra LED strip on top of the C. The parts of the taillights that we can see look significantly different than that found on the Sierra, showing GM is planning on having a great deal of differentiation there. We can sort of see through the mesh covering the grille to what appears to be a classic horizontal bar style front opening. Chevy is predictably dialing the crazy LED strip design back for the Tahoe and Suburban. The parts that are lit up look a whole lot like the headlight fixtures on the 2019 Silverado. That truck uses a stack of lights with the actual headlights separated from the DRLs. We can see the same thing going on here, with the headlight up top and curved LED DRL strip sitting below. It's tough to say if the designs are exactly alike, but we expect to see an extremely Silverado-esque look once all the camouflage comes off. Chevrolet's taillight design differs from its donor truck like the GMC, showing off a curved, vertical series of LEDs out back. Once production lights start popping up like this, we know the vehicle is moving closer to its end game. A reveal sometime later this year could be in the cards for GM's next batch of full-size SUVs. It certainly needs them quick, as Ford rockets ahead with increased Expedition production announced earlier this week.

'Killing a Duramax' Gale Banks YouTube series methodically tunes a diesel to death

Learning or perfecting a skill by watching YouTube videos is known as attending YouTube University. GM Authority picked up on one of the video site's more fascinating courses, hosted by Gale Banks; in a fair world, he should be referred to as Professor Banks when it comes to diesel engines and truck tuning. A few months after GM introduced the updated L5P 6.6-liter Duramax diesel V8 in the 2020 Chevrolet Silverado HD and GMC Sierra HD that ships with 454 horsepower and 910 pound-feet of torque, Banks decided he wanted to methodically tune the engine to death. The purpose of the resulting series, called "Killing a Duramax," is to push more power out of the engine in order to discover which parts break and when — or, as Banks puts it, force-feed the Duramax "until the crank hits the street and the heads hit the hood." With that knowledge, Banks can figure out all the weak points on his way to building what he calls a "Superturbo," that being a supercharged, twin-turbo race engine with more than 1,000 hp. What makes the series fascinating is Banks' knowledge, paired with the company's comprehensive iDash engine monitoring system that keeps tabs on a glut of parameters every step of the way. So for instance, you get Banks explaining the differences between inches of mercury and barometric pressure, how those are different from the water content of the air measured in grains, then showing those readouts on the iDash, then explaining in detail how they affect the air density in the Duramax system. The stock Borg-Warner variable turbo gets a lot of airtime — Banks accuses it of being "out to lunch" because he feels it's the weakest link on the engine. That turns into a turbo teardown and a deep explanation of performance pitfalls, such as when air pressure on the turbine begins to diverge from the boost pressure coming from the compressor. Banks says he can keep close tabs on where power's coming from, because the iDash monitors the horsepower contribution provided by the ambient air, the turbo, and the intercooler separately. The major changes so far are a stouter Precision 7675 turbo and TurboSmart wastegate (episode 5), a twin intake (episode 6), a custom liquid-cooled intercooler from a marine engine, a new GM oil cooler and synthetic oil (episode 10), and new injectors (episode 11).

GMC Hummer EV SUV first drive, RIP Camaro, Ferrari Roma Spider | Autoblog Podcast # 773

In this episode of the Autoblog Podcast, Editor-in-Chief Greg Migliore is joined by News Editor Joel Stocksdale. They start off with one of the week's biggest official news items — the impending death of the sixth-gen Chevrolet Camaro. On the subject of powerful American cars, they pivot to a teaser from Stellantis execs that there are big things ahead for its Dodge Charger SRT Daytona Banshee concept. From there, they look at Ferrari's new topless Roma and then get into Ford's multi-billion-dollar electric vehicle pivot. Speaking of expensive EVs, Joel just got back from driving the new GMC Hummer SUV. He also had the new F-150 Lightning Pro in his driveway, and that's followed by Greg's update on Autoblog's long-term Toyota Sienna.  Autoblog Podcast # 773 Get The Podcast Apple Podcasts – Subscribe to the Autoblog Podcast in iTunes Spotify – Subscribe to the Autoblog Podcast on Spotify RSS – Add the Autoblog Podcast feed to your RSS aggregator MP3 – Download the MP3 directly Rundown News Chevrolet Camaro production will officially end after 2024 model year Dodge CEO teases more to come from Charger SRT Daytona Banshee Ferrari Roma Spider returns a front-engined soft top to the lineup Ford Model e losing billions as it says EV unit should be seen as startup What we're driving Ford F-150 Lightning Pro 2024 GMC Hummer EV SUV 2023 Toyota Sienna Platinum AWD Feedback Email – Podcast@Autoblog.com Review the show on Apple Podcasts Autoblog is now live on your smart speakers and voice assistants with the audio Autoblog Daily Digest. Say “Hey Google, play the news from Autoblog” or "Alexa, open Autoblog" to get your favorite car website in audio form every day. A narrator will take you through the biggest stories or break down one of our comprehensive test drives. Related video: How to activate Crab Walk on the GMC Hummer EV