1985 Gmc Sierra Classic on 2040-cars

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GM shows off 'digital vehicle platform' enabling more in-car tech and OTA updates

It appears to have dropped the sobriquet "Global B," but General Motors' new electrical architecture has bowed in drawings and video. This is the "digital vehicle platform" GM president Mark Reuss spoke to Reuters about in 2015, saying it would move a great deal of a vehicle's computer work to the cloud and enable over-the-air updates. Reuss took the microphone for the debut, too, saying, "Our new digital vehicle platform and its eventual successors will underpin all our future innovations across a wide range of technological advancements, including EVs and expanded automated driving." The system will go into production later this year, appearing in dealerships first either on the 2020 Cadillac CT5 or the mid-engined 2020 Chevrolet Corvette. Yes, these are the same electronics cited for delaying the launch of the C8 Corvette over excessive draw, security and getting the more-than-100 computer modules to communicate seamlessly. When Car and Driver asked about that, GM replied with "No comment." Volkswagen's having the same issues with the Mk8 Golf right now, though, so GM isn't alone, and this will be the new normal among OEMs for a while. What's certifiable is that the new architecture is robust enough to handle 4.5 terabytes of data per hour, which is five times what GM's current wiring can handle. And thanks to Ethernet connections of 100 Mbps, 1 Gbs and 10 Gbs, communication within and without the vehicle happens much faster. The advances mean better screen resolutions, better battery management for hybrids and electric vehicles, the capability for over-the-air updates and "functionality upgrades throughout the lifespan of the vehicle." Cadillac's Super Cruise has already been lined up as a leading candidate for constant improvements in the driving assistance suite, a key part of GM's "vision for a world with zero crashes, zero emissions and zero congestion." And whenever GM decides to take the plunge, it will mean a 48-volt electrical system. More than 300 specialists worked on the digital platform, and security was a huge part of the task. We've already heard that GM consulted with Boeing and military contractors on how to prevent hacking. The carmaker has an internal Product Cybersecurity group that reached out to the research community, and created a "bug bounty" program to crowdsource uncovering any flaws.

2015 Chevy Silverado, GMC Sierra can tow up to 12,000 pounds

Think back to the launch of the 2014 Chevrolet Silverado. At the time, General Motors happily trumpeted that its fullsize pickup could tow up to 11,500 pounds when properly equipped - impressive stuff, no doubt. But now, revised tow rating practices have been put into place, called SAE J2807. And with these new methods of testing, GM can now officially rate both the Silverado and its GMC Sierra twin as being able to tow up to 12,000 pounds.
Of course, not all Silverado and Sierra models are capable of this feat. In fact, because of SAE J2807, most of the truck models have actually had decreases in tow ratings from the 2014 to 2015 model year. For example, a 2014 Silverado Crew Cab with the 5.3-liter V8, 5.7-foot box and 3.73 rear axle was rated at 11,200 pounds in 2014, but has since been reduced to 10,800 in 2015. Same goes for the Sierra.
But for 2015, both the Silverado and Sierra can be had with a more powerful 6.2-liter V8, as well as a Max Trailering Package that includes a 9.76-inch rear axle, heavy-duty rear springs, revised shock tuning, improved cooling and a new trailer brake controller. There are also four- and seven-pin, bumper-mounted connectors, a trailer hitch (duh), and a G80 locking rear differential. This configuration, with either model, is the only way you can actually tow 12,000 pounds.

GMC Terrain headlight recall fix is a sticker

This GMC Terrain recall over a headlight issue has gone from fascinating to absurd. It started when GMC discovered the headlights on the 2010-2017 Terrain were out of compliance with Federal Motor Vehicle Safety Standards (FMVSS). A pinpoint of low-beam light was being reflected off the high-beam reflector. This bounced a tiny sliver of bright light up into the trees and the sky beside the road, not into oncoming traffic. GMC did the right thing, reporting the noncompliance to the National Highway Traffic Safety Administration. Because the sliver of light was coming from the low beams and was four times brighter than the maximum allowable low beam brightness, the NHTSA told GMC to recall 740,581 units of the SUV. GMC asked for an exemption, admitting the bright spot could cause glare while noting the errant beam didn't affect other road users. The automaker hadn't received any complaints, only a comment from one owner saying the lights put a bright spot in the trees on the other side of the road. The NHTSA denied the request. GMC began notifying owners in April that they'd need to come in for a fix once a fix had been developed. That's the fascinating part. The absurd part, which Tire Meets Road uncovered, is that the fix is a "Headlamp Applique Kit." Which is a piece of frosted tape applied to the outside of the headlight that lets low-beam light through and tamps down any potential glare from the caroming beam. Notice that the parallelogram of frosted tape matches the L-shaped frosted area along the inside of the headlight housing. That portion was already a feature of the lamp, as can be seen in our 2016 Terrain Denali Quick Spin. The repair needs a trip to the dealer for a tech to place a positioning template over the headlight and put the applique kit in the proper spot. GM's instruction kit says the whole thing should take 0.2 of an hour, or 12 minutes—about the time it it would take to get checked into and out of the dealership service department. Owners aren't impressed, some calling the fix unnecessary and ridiculous, and the tape should make it clear that GMC feels the same way. Some owners have said they're going to skip the recall. Those drivers will find that just as GMC couldn't escape the legal ramifications, neither can they. Local motor vehicle bureaus keep track of recall compliance.