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GM considering new powertrain options for large SUVs

Aside from the new General Motors offerings, there's not a whole lot of action going on in the fullsize SUV segment. That doesn't seem to be stopping GM from pushing the envelope in the market as Automotive News is reporting that the automaker is looking to introduce some new powertrain options into the Chevy Tahoe (and Suburban), GMC Yukon (and Yukon XL) and the Cadillac Escalade - all have been redesigned for the 2015 model year.
Now, we already know that GM and Ford are collaborating on nine- and ten-speed transmissions for a broad range of applications (including the big SUVs), but this new report says that GM is also considering other options as a way to one-up the competition and, of course, to optimize fuel economy. AN quotes Jeff Luke, executive chief engineer for GM trucks, as saying that "interesting powertrain technologies" are coming including a return of a hybrid SUV and possibly even a diesel engine. Although it sounds like the latter could come down to how customers respond to the 2014 Jeep Grand Cherokee EcoDiesel.

Cadillac CT6 V-Sport wants to take prisoners with 550-hp 4.2L TT V8

With the refresh of the Cadillac CT6 for 2019, Cadillac welcomes the first CT6 V-Sport as well as a new trim strategy. The changes at the front for the CT6 lineup don't appear substantial viewed head-on, one needs a side view to appreciate the greater three-dimensionality. Thinner headlights and a thinner bumper above a slightly larger lower front intake emphasize the mesh grille, and the vertical LED DRLs make more dramatic statements thanks to those narrower headlights. By angling the main units back toward the rear of the sedan, the CT6 now has a certified, sculpted snout. The rework appears to add substantial overhang, but overall length only increases by a tenth of an inch, to 204.1 inches. What's under the V-Sport's probing hood is just as interesting as the redesign and the sporting thrust: A clean-sheet design of a 4.2-liter DOHC twin-turbo V8. In the V-Sport, the engine produces 550 horsepower and a Bentley-esque 627 pound-feet of torque. As an optional engine elsewhere in the CT6 range, the same engine produces 500 hp and 553 lb-ft. The displacement, specs, plus the fact that "each engine will be hand-built at the Performance Build Center in Bowling Green, Kentucky" indicate this was one of the rumored powerplants for the mid-engine Corvette. The coming sports car was tipped to get a 4.2-liter and 5.5-liter DOHC twin-turbo V8. Based on the position of the turbos in this engine vs. their positions in the previous CAD drawings, we assume the drawings represented the 5.5-liter. (Note: Cadillac said Corvette will not get the new 4.2-liter twin-turbo engine.) The 4.2-liter item features an aluminum block, heads, and pistons, direct injection with a 9.8:1 compression ratio, cylinder deactivation, cylinder oil jets, and a variable-pressure oil system. The twin-scroll turbochargers capable of 20 pounds of boost sit in the 90-degree vee, working alongside twin water-to-air intercoolers, twin throttle bodies, and twin electric wastegates. Cadillac says 90 percent of torque arrives at 2,000 rpm and loiters through 5,200 rpm. Power gets sent through GM's 10L90 ten-speed automatic transmission and on to the standard all-wheel-drive system. Cadillac didn't list 0-to-60-mph times in its press release, but engineers have track-worthy alacrity in mind for the CT6 V-Sport.

Meet the other Cadillac wagon. It's as American as ABBA

The Cadillac CTS Wagon became a cult classic the second it went on sale. We all knew that it was never going to sell in anything approaching significant numbers, and if that "we" didn't include those actually working at GM, one would have to wonder what they were smoking. Cadillac was still having a hard enough time trying to convince people that it was now a BMW-fighting sport luxury brand rather than the purveyor of Grandpa-piloted land yachts. To many, a sport sedan like the CTS seemed like a stretch. But a CTS sport wagon? It sure seemed like GM was just doing things for funzies, an impression only enhanced by the CTS-V Wagon. Forget cult classic. That thing was an instant legend.  And yet, the CTS wasn't the only Cadillac of that era offered as a wagon. It wasn't even the first. Before GM said "to hell with it, let's have some fun" on this side of the pond, over in Europe, it had already taken a page from its old badge-engineering playbook to create the 2006 Cadillac BLS Wagon. It was available as a sedan, too, but its awkward majesty is best enjoyed as the long-roof model.  There's just something off about the whole thing, right? That's probably because it also looks vaguely familiar, as if you've seen it before. So where the hell does this thing come from? Sweden! Behind that Cadillac Art and Science face is a Saab 9-3, and in the case of the BLS Wagon, the Saab 9-3 Sport Combi wagon. The roofline is the dead giveaway, as no other wagon has ever looked like that. In fact, the roof and windows were the only exterior elements to copy directly over from 9-3 to BLS. No kidding. With the Cadillac front end, doesn't the Saab-funky-boxiness make it look like a miniature hearse? The answer is yes. GM's design team, led by Ed Welburn, was quite pleased with his work. Perhaps it even egged him on to create a real Cadillac sport wagon? "The whole team was very excited to apply Cadillac's design language to a wagon for the first time," said Welburn in a press release from the time. "The V-shaped chrome-plated grille, a Cadillac hallmark, is picked up again by the shape of the rear window, and the body side character lines make it unmistakably a Cadillac." The interior is surprisingly different from the 9-3, including the ignition switch migrating from the center console up to the steering column. It also wasn't exactly in keeping with the Cadillac norm of the time.