2002 Gmc Sierra Denali Awd on 2040-cars

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2015 Chevy Colorado and GMC Canyon order guides reveal added power

General Motors' Fleet Order Guide system is often the canary in the coal mine for interesting changes on new models. The recent guide for the 2015 Corvette unveiled all sorts of changes that weren't yet known about the sports car. Now, it's time for the 2015 Chevrolet Colorado and GMC Canyon to take their bow in the spotlight, and they look worth the wait. The new midsize trucks are getting a touch more power than first thought, as well as some very nice features.
Extended Cab models of both trucks come standard with a 2.5-liter, direct-injected four-cylinder rated at 200 horsepower at 6,300 rpm and 191 pound-feet of torque at 4,400 rpm. That's a bit more than the 193 hp and 184 lb-ft originally reported for the duo. The standard transmission for the extended trucks is a six-speed manual, but the Work Truck trim is also available with an optional six-speed automatic. Towing for the four-cylinder is rated at 3,500 pounds.
Crew Cab models come standard with a 3.6-liter V6 with 305 hp at 6,800 rpm and 269 lb-ft of torque at 4,300 rpm, with a six-speed automatic. That's also somewhat different than the originally reported rating of 302 hp and 270 lb-ft. Towing for the V6 is rated at 7,000 pounds.

GMC Hummer EVs 'sold out for two years or more'

At the end of March this year, GMC said it had 65,000 reservations for the Hummer EV pickup and SUV. At the time, brand chief Duncan Aldred said, "Production’s actually slightly ahead of plan and weÂ’re putting things in place now to actually expedite that as well, so we can deliver these reservations quicker than we originally thought. WeÂ’re seeing momentum building," adding that "it still means a reservation now probably means delivering in '24." By the time of the 2024 GMC Sierra EV Denali Edition 1 reveal just a bit ago, that reservation number had climbed to 90,000. GMC shut down the Hummer reservations line a month ago. GM Authority reports that when GMC chief Duncan Aldred spoke at a media briefing ahead of the Sierra EV reveal, he said the Hummer is "sold out for two years or more."   Notice, the word "probably" has been replaced by the phrase "or more" in the production vocabulary. That development likely takes into account what's happened since March at GM's Factory Zero, where the automaker currently builds the Hummer. That site, along with the new Orion Township Assembly Plant, will soon build the Chevrolet Silverado EV, GMC Sierra EV and Cruise Origin autonomous vehicle. In a memo from the beginning of the year, GM said a $6.6 billion investment in EV production capability will ultimately allow 600,000 electric pickups to come off lines every year. That's at least a couple of years away, though. At the beginning of October, GM said it wanted to bump production of the EVs on sale now, which includes the Chevrolet Bolt, to 70,000 vehicles in 2023. Back to the Hummer, GMC increased September Hummer production to 700 units for the month. That was a huge bump over the monthly average in the nine months up to September, the production totaling 2,750 units for the first three quarters, yet well behind what the brand would like. And Factory Zero will shut down for a few weeks in November for upgrades to produce the additional vehicles. All of this assumes the supplies of chips and raw minerals for batteries, industrial supplies and industrial transport don't suffer another hiccup. If there's any good news buried in all this, it's that 95% of Hummer reservation holders were converting to paid orders, an absurdly positive number. Based on what we've seen so far, GM's got some good looking EVs on the way. Let's cross our fingers that the company can build them quicker. Related video: This content is hosted by a third party.

'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).