When the current GMT900 SUVs hit the market in 2006, gas prices were already near $3.00 per gallon, but the super-sized transports sold in prodigious numbers anyway. The reasoning from the General and its customers was that there were still people with big boats or trailers to tow, and unibody CUVs just aren't up to the task. In the two years that followed, gas prices have gone from pesky to pandemic, and buyers are leaving their body-on-frame SUVs by the thousands.
The General isn't blind to the trend, and a report from Bloomberg says that GM may be ready to take the drastic step of separating the platforms of its trucks and full-size SUVs by 2012. The move is extreme because SUVs and trucks have saved development time and money by sharing a platform for many decades, but with such a dramatic shift away from the handy but fuel-thirsty rigs, GM has little choice but to think of alternatives. A unibody Tahoe or Escalade wouldn't be able to tow quite like its predecessor, but they would be lighter and have better fuel economy.
Our first thought was that GM already has eight-passenger unibody CUVs like the Enclave, Acadia, Outlook and upcoming Traverse, but without more utilitarian SUVs like the Tahoe, there should be room for a more purpose-built CUV in the lineup. While this news isn't exactly earth-shattering, we're thinking it very accurately illustrates just how fast these times they are-a-changing, and how far automakers will go to stay viable. Thanks for the tip, Fro!
General Motors has informed its dealers that production of some of its 2008 full-size trucks and SUVs has been halted due to the ongoing American Axle strike. The affected vehicles include the GMC Yukon, Denali, Sierra heavy-duty regular and extended cab, its commercial-duty pickup and variants of Chevrolet trucks and Tahoes. According to the General, a basic lack of parts is the reason for the stoppage and dealer orders for the week of May 8th and May 15th have been cancelled. While a lack of production is bad news for any automaker, we can't help but think that it couldn't have come at a better time for the General as SUV and truck sales are down overall.
The battle of the diesel-powered half-tons is about to begin, and today General Motors revealed more details on its entrant: the 4.5L Duramax turbo-diesel V8. Thanks to a narrow-angle V block, the 4.5L turbo diesel will fit in the same space as the General's small-block V8, which does give us hope for additional applications beyond just its half-ton trucks. Large SUVs are surely going to get the engine as an option eventually, but maybe GM can find a passenger car or two down the line that would benefit from the tons of torque this engine will produce. GM says the 4.5L turbo-diesel will produce 310 horsepower and 520 pound-feet of torque, while bumping fuel efficiency by 25%. In order to help it meet Bin 5 and LEV 2 emissions standards as well as be 50-state legal, the engine will feature both a diesel particular filter and NOx after-treatment system that uses urea to knock out those pesky nitrogen-based particles. Another engineering coup for the 4.5L turbo-diesel is that GM has reduced its parts count thanks to a design that includes integrated aluminum cylinder head exhaust manifolds and an integral cam cover intake manifold. You'll be able to buy the new diesel in model year 2010 Chevy Silverados and GMC Sierra half-ton pickups, no doubt for a sizable premium over their gas-powered counterparts.
We don't normally cover every little change an automaker makes to its lineup as the model year clicks over, but General Motors has some significant features it's adding for 2009 that shouldn't fall through the cracks. For one, Bluetooth will finally become available on nearly all of GM's cars and trucks. For the longest time, only the Cadillac STS was available with Bluetooth phone integration, which ends with MY2009. Second, the six-speed automatic transmission that before was not widely available in the General's half-ton trucks and SUVs has spread like wildfire across the GMT900 lineup and will now be standard or optional in such vehicles as the Avalanche, Silverado and Sierra 1500, Suburban, Yukon and Yukon XL. Curiously, though, it's still not available on the Tahoe.
Other items of note include a new 6-speed automatic for the Pontiac G6 to replace its underwhelming 4-speed, the replacement of GM's 3.6L V6 in the GMC Acadia and Saturn Outlook with the direct-inject version that will bump power up to 290 hp, and finally a new four-cylinder base model for the uplevel Malibu LTZ that features the the 2.4L four-cylinder ECOTEC engine paired with a six-speed automatic. Thanks for the tip, Cameron!
The American Axle strike, now in its second month, is causing General Motors more than a few headaches. The parts shortage caused the General to nearly cease production of its highly profitable large trucks and SUVs, and shut down production in Oshawa, Ontario and Fort Wayne, Indiana.
As of this past weekend, it appears that GM has found enough parts to re-open those two plants to start building the Chevrolet Silverado and GMC Sierra again. While that's good news for those workers, the SUV plant in Arlington, Texas, all but untouched by the strike, will now find itself shutting down. Arlington will go on a four-week layoff starting April 14.
To get the Ontario and Indiana plants up and running, GM is reportedly getting parts from an American Axle plant in Mexico (as Chrysler has been doing). Although GM won't officially specify from where the parts are coming, if they are being supplied from Mexico, as many suspect, it will offer the automaker additional leverage in its dispute against the UAW. Union officials are currently losing negotiation power as the slumping U.S. auto market has reduced the demand for vehicles with American Axle components. In a move to shift the balance of power back to its favor, the UAW has threatened additional strikes if local contracts aren't soon reached.
You might remember a bout of fires consuming a handful of Ford trucks, SUVs and cars that was due to a faulty cruise control switch that could ignite even if the vehicles were parked. General Motors is apparently having a similar issue, and although it doesn't involve the same cruise control system, the potential outcome – a car fire – is the same.
The National Highway Traffic Safety Administration is looking into the 2007 GMC Yukon after two of the SUVs caught fire while parked in the owners' garages with the ignition turned off. The issue could affect some 423,000 vehicles, but according to a GM spokesperson, the automaker doesn't think it's a widespread pattern or trend. The NHTSA will have the final word on that, we suppose.
Update: Video of the live GMC Denali XT reveal is available after the jump click above for more live shots of the GMC Denali XT Concept
GM designer Brian Nesbitt publicly unveiled the GMC Denali XT concept today at the 2008 Chicago Auto Show. The Denali is the first U.S. example of the "Ute" car-based pickup that's built on the rear-wheel-drive Zeta platform. In this case, the Denali is a four-door pickup using the same rear-wheel-drive architecture as the Holden Commodore/Pontiac G8. It was even designed down under at GM's Australian design studios. Unlike the RWD sedans with which it shares a platform, the Denali has the first example of a flex-fuel engine combined with GM's two-mode hybrid system. The flex-fuel V8 is 4.9L in displacement and has direct fuel injection to maximize both power and fuel economy. According to GM, it expects the powertrain to produce 325 hp and have a 50% boost in fuel efficiency compared to a conventional V8. So far there is no indication of whether on not GMC will offer a production version of the Denali XT, but the powertrain will almost certainly appear in future GM products.
Gallery: Chicago 2008: GMC Denali XT concept reveal
click above for high-res gallery of the 2009 GMC Sierra Hybrid
It is a universal truth that for every Chevy truck that debuts, there is a GMC version not far behind. This maxim even extends to the two-mode hybrid versions of the automaker's GMT900 half-ton pickups. At the LA Auto Show late last year, Chevy debuted the 2009 Silverado Hybrid. At the Chicago Auto Show next week, we'll meet the 2009 GMC Sierra Hybrid, which is virtually identical to its bow tie brother. That means the Sierra Hybrid gets the same two-mode hybrid drivetrain and 6.0L V8 used in the Chevy Tahoe and GMC Yukon Hybrids, as well as the Silverado Hybrid. Like the latter, the Sierra Hybrid pickup features a 300-volt nickel-metal hydride battery pack beneath its second-row bench. Those cells can power the pickup up to 30 mph for a full mile without help from the gas engine, even when towing. Speaking of which, the 2WD model can tow 6,100 lbs., while the 4WD model dials it down to 5,900 lbs. The 6.0L V8 also features Active Fuel Management (cylinder deactivation), which allows it to run on as few as four-cylinders when not under load. There's also the requisite chin spoiler and tonneau cover to help reduce aerodynamic drag. All of this adds up to a 40% increase in fuel economy during city driving and a 25% improvement overall. That's identical to the increase you'll get in the Chevy Silverado Hybrid, but perhaps you prefer the hybrid truck with the biggest logo on the market.
Over at AutoblogGreen, one of our colleagues has a report that General Motors may be introducing hybrid versions of its Lambda CUVs (the Buick Enclave, Saturn Outlook and GMC Acadia), as well as the GMC Sierra. Previously, GM had not indicated that any of these vehicles would be hybridized. Since the Sierra is built on the same GMT900 platform as the already available Tahoe/Yukon two-mode hybrids and the upcoming Escalade and Silverado hybrids, let's tackle that one first. The Silverado and Sierra are essentially the same vehicle with only visual differences, so this one is a no-brainer and it's only a matter of time before GMC announces a Sierra Hybrid.
The Lambda hybrids are a different story entirely. According to Brian Corbett, GM's spokesman for Hybrid programs, there are no immediate plans to build a hybrid version of the Lambdas. In fact, during a conversation we had with Bob Lutz at the LA Auto Show, he indicated that the existing front-wheel-drive, two-mode transmission would not fit in the Lambda's engine compartment as it wasn't wide enough. According to Corbett, a second generation version of the two-mode system was under development, but that is at least three to four years away from launch. The mild hybrid system that is currently installed on the Saturn Vue and Aura is designed for smaller vehicles and wouldn't be suitable for the larger Lambdas in its current form. A second-generation version of that system is also under development using a lithium-ion battery and should appear somewhere around 2010-11, which may work in these big wagons. Given the new fuel economy regs, GM is sure to do something with the Lambdas, although dropping in the Cadillac 2.9-liter diesel V-6 might be an even better option that would also help towing capability.
click above to view more speculative renderings of GMC's unibody pickup
Bob Lutz may have been confused when he told GoAuto that GM would be unveiling a GMC unibody pickup concept based on the rear-wheel-drive Zeta platform at this year's New York Auto Show in late April. Sources close to Jalopnik claim that the vehicle will actually debut nearly a month and a half earlier at the 2008 Chicago Auto Show, press days for which begin on February 5th. The source also claims that the GMC unibody pickup will be entirely unibody, and not have a chassis grafted onto the back like the Holden Crewman, the vehicle to which this concept pickup has been most closely compared.
All that's fine and good, but ever since Lutz mentioned the car-based pickup, we've had a tough time imagining what it will look like. Lutz said it would have four doors, be low to the ground and feature very masculine GMC styling cues. The only other totally car-based pickup with which we're familiar is the Honda Ridgeline. Now we can't get the image of a lowered Ridgeline wearing GMC badges out of our head.
Fortunately, GM Inside News forum member MonaroSS has come to our rescue with these photochops of what the GMC's unibody pickup could look like. The images are based off of the Holden Sportwagon, but the roof has been raised, the rear end swapped out for a bed, bulging fenders added and the front profile has a definite GMC shape. We much prefer conjuring an image of this vehicle in our heads than the aforementioned mutant Ridgeline, at least until we meet the pickup in person at the Chicago Auto Show.
Check out more renderings of the GMC concept by MonaroSS in the gallery below.
We don't normally cover every little change an automaker makes to its lineup as the model year clicks over, but General Motors has some significant features it's adding for 2009 that shouldn't fall through the cracks. For one, Bluetooth will finally become available on nearly all of GM's cars and trucks. For the longest time, only the Cadillac STS was available with Bluetooth phone integration, which ends with MY2009. Second, the six-speed automatic transmission that before was not widely available in the General's half-ton trucks and SUVs has spread like wildfire across the GMT900 lineup and will now be standard or optional in such vehicles as the Avalanche, Silverado and Sierra 1500, Suburban, Yukon and Yukon XL. Curiously, though, it's still not available on the Tahoe. 
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