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GM can't keep up with most popular pickup orders

With the market for pickup trucks at its best since before the recession, General Motors can't afford any hiccups with the launch of its new 2014 Chevrolet Silverado and GMC Sierra twins, but it sounds like the popularity of V8-powered trucks is causing some supply-chain issues. Bloomberg reports that GM is experiencing a shortage of 5.3-liter V8 engines because an unnamed parts supplier has been unable to keep up with demand. This is leading GM to restrict the number of V8 Silverado and Sierra trucks that Chevrolet and GMC dealers are allowed to order.
Although it's unclear how long it will take to resolve the parts shortage, GM doesn't have much time to sort it out, as a new Ford F-150 looms on the horizon. At launch, GM's fullsize trucks were offered only with a base 4.3-liter V6 and the 5.3-liter V8, but a burlier 6.2-liter V8 will be available soon. Interestingly, at least at the moment, GM truck buyers don't seem as willing to downsize to V6 power as buyers of the F-150, which gets some 42-percent of its sales from trucks equipped with its EcoBoost V6 engine (not including the normally aspirated base V6).
Working out the kinks in the Silverado and Sierra's supply chain couldn't be more important to the health of the company. Full-size pickups are a huge profit driver - in 2012, the trucks were said to make up about two-third of GM's total profits.

2021 GMC Sierra adds towing tech, new HD Black Diamond Edition

Trailer towing is the focus of several new technologies coming to the 2021 GMC Sierra pickup, with the new features available both on the Sierra 1500 and the Sierra HD. The 2021 Sierra also sees expanded availability of GMC's MultiPro tailgate, a price cut for the available 3.0-liter Duramax turbodiesel six, and a new Black Diamond Edition of the Sierra HD. Pickup truck makers are engaged in a trailering-technology arms race. Already, the GMC Sierra offers its ProGrade Trailering package that features a "Transparent Trailer" virtual camera view and a Rear Trailer View that uses an auxiliary camera mounted on the back of the trailer. To that, GMC is adding a Trailer Length Indicator that can alert drivers of another vehicle in the adjoining lane during a signaled lane-change. A new Jack-Knife Alert warns the driver if the front of the trailer approaches the rear of the tow vehicle. The warning appears in the center screen and can also trigger a seat vibration. The previous Rear Side View split-screen now also works when reversing and adjusts for the angle of the trailer. The Cargo Bed View now includes a zoom feature and hitch guidance for connecting gooseneck trailers. Finally, the previous Rear Trailer View adds a trailer-angle indicator and dynamic guidelines. In other equipment news, the six-position MultiPro tailgate is newly available on the Sierra 1500 SEL and Elevation trims and standard on the Sierra HD SLE. The fancy Sierra HD Denali adds Surround Vision and Bed View cameras to the standard-equipment list. Standard and optional engine choices for the Sierra are unchanged for 2021, but the price of the optional 3.0-liter turbodiesel engine in the Sierra 1500 is reduced by $1,500. For 2021, on models where the 5.3-liter V8 is standard (SLT, AT4, and Denali), the upcharge will be $995. For the SLE and Elevation, where the 2.7-liter V6 is standard, the cost to upgrade to the diesel is now $2,390, again a decrease of $1,500. Lastly, the Sierra HD adds a Denali Black Diamond Edition. It includes 20-inch gloss-black wheels, power-retractable side steps, premium audio by Kicker, an Auxiliary Trailer Camera, trailer tire-pressure monitor sensors, and premium floor mats with removable carpet inserts. It comes in any color you want so long as it's Ebony Twilight Metallic. The Black Diamond Edition is pictured above. Related Video:    

GM SUV window switch recall urges owners to park vehicles outside

It's not unusual for there to be a lag between an automaker announcing a recall and the official documentation showing up on the National Highway Traffic Safety Administration website. So it's no surprise that a recent GM campaign took about a month to appear in its official capacity. However, there appears to be some big differences between the two reports with potential safety implications.
In late June, GM announced that it needed to recall 181,984 examples of the Chevrolet Trailblazer, Buick Rainier, GMC Envoy, Isuzu Ascender and Saab 9-7x from the 2005-2007 model years, plus the 2006 Chevy Trailblazer EXT and 2006 GMC Envoy XL. The new documents paint a slightly different picture with 184,611 needing repaired and different model years listed.
The reason for the fix is still the same, though. It's possible for fluid to contact the master power window switch module in the driver's door, which can corrode the part. Eventually this could cause a short circuit, leaving the buttons inoperable and potentially leading to a fire. But the new NHTSA documents add an important note: "A fire could occur even while the vehicle is not in use. As a precaution, owners are advised to park outside until the remedy has been made."