Denali Package, Low Miles, Great Condition, Quadrasteer on 2040-cars

Year:2002 Mileage:104900

Location:

Jacksonville, Florida, United States

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If you demand total steering compliance from a tow vehicle, along with stability and maneuverability from what's being towed, the GMC Sierra Denali with Quadrasteer is just the ticket. Developed jointly by GM and Delphi Automotive Systems, Quadrasteer (a rear-wheel-steering system for trucks) is a standard feature on the '02 Sierra Denali pickup and soon to be on other full-size GM products. By using various sensors around the vehicle, a microprocessor computes the correct rear-wheel position and actuates an electric motor to turn it accordingly.

2002 Gmc Sierra Denali Quadrasteer Ride Control View

Below 45 mph, the rear wheels can steer up to 12 (left or right). At these speeds, the rear wheels turn in the direction opposite the fronts. Above 40 mph, the rear wheels turn in the same direction as the fronts to significantly limit the pivoting a trailer feels at the hitch. Forty-five mph is a neutral zone, where the rear wheels maintain a fairly straight-ahead position even when the front wheels are turned. When in the 4WS Tow Mode (recommended for towing), the speed of the neutral zone is reduced by the microprocessor to 25 mph. Visually, rear-wheel turn appears modest, but the amount they do turn yields dramatic performance dividends. The Sierra Denali, with its Vortec 6000 V-8 and strong all-wheel-drive system, is capable of towing up to 10,000 lb. Hitching the Sierra Denali to a Holiday Rambler Alumascape travel trailer, we set out to test the setup. With the Alumascape having a dry weight of just under 5000 lb and a hitch weight of about 500 lb, we augmented our tow setup with a load distribution hitch and a sway-control device. We also added an electronic brake controller that actuates the trailer's electric brakes when the brake pedal is applied. Fully prepared, we headed up California Highway 74, which begins at sea level and climbs and winds a few thousand feet up before plunging down the backside of some rough desert mountains to Lake Elsinore below.

2002 Gmc Sierra Denali Quadrasteer Rear Axel View

Developed by Delphi Automotive Systems, the rear-wheel-steer application uses a heavy-duty Dana axle with a dedicated computer controller under the bed, protected by the spare tire. The system has a heavy-duty spring-loaded fail-safe preset in case power is lost, pushing both wheels into straight alignment. (Below) The advantages of the system are easily seen when compared to other vehicles.

The trailer tracked well, exhibiting minimum trailer sway, and, with the exception of being visible in the side mirrors, for all intents and purposes its presence was transparent to us. Powering through mountain esses and tight hairpin turns, this twosome exhibited good synergy. Returning via the Interstate, we found that transitioning from one lane to another at freeway speeds was noticeably quicker and smoother, yielding less trailer sway than when we duplicated these same maneuvers using the 2WS Mode. Standard features of the Sierra Denali include a Vortec 6000 that develops 325 hp and 370 lb-ft of torque. Standard is a full-time all-wheel-drive system that employs a viscous coupling center differential in the transfer case that senses slippage front and rear and provides torque as needed, where it's needed. All by itself, this improves towing performance, especially under slick-surface conditions. The heavy-duty Dana 60 rear axle features a 4.10:1 ratio and a 9.8-in. ring gear (standard for the 1/2-ton Sierra is an 8.6-in. gear). The transmission is GM's newly revised and strengthened four-speed automatic

Read more: http://www.motortrend.com/roadtests/trucks/163_0208_2002_gmc_sierra_denali/viewall.html#ixzz2itKz4Ih2

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GM 6.2L EcoTec V8 rated at 21 mpg by the EPA

Wed, 02 Oct 2013

General Motors is already laying claim to best-in-class power for its new 6.2-liter V8 that will be offered in the 2014 Chevy Silverado and GMC Sierra this fall, and now it has released fuel economy numbers for the big engine. Available as an option on the Silverado LTZ and High Country (shown above) models as well as the the Sierra SLT and Denali trims, the 6.2L EcoTec3 V8 will return 15 miles per gallon in the city and 21 mpg on the highway on rear-wheel-drive trucks; these numbers drop by one mpg each on four-wheel-drive models.
These estimates are in addition to the engine's 420 horsepower, 460 pound-feet of torque and max trailering capacity of 12,000 pounds, and considering all that power it's not terribly far away from the fuel economy of GM's equally new 4.3-liter V6 and its rating of 18 mpg city and 24 mpg highway. This announcement comes just days after a report indicated that GM is unable to keep up with the demand of the 5.3-liter V8 in the fullsize Chevy and GMC trucks due to supplier issues. GM's official press release for the 6.2-liter V8's fuel economy is posted below.

Thoughts on the 2022 GMC Hummer EV and the record-setting SSC Tuatara | Autoblog Podcast #650

Fri, Oct 23 2020

In this week's Autoblog Podcast, Editor-in-Chief Greg Migliore is joined by News Editor Joel Stocksdale. They lead the podcast with the week's two big news stories: the reveal of the 2022 GMC Hummer EV and the 316-mph production car speed record set by the SSC Tuatara. Afterward, the editors discuss some recently driven cars, the Lincoln Continental Coach Door Edition and the GMC Canyon AT4. Autoblog Podcast #650 Get The Podcast iTunes – Subscribe to the Autoblog Podcast in iTunes RSS Â– Add the Autoblog Podcast feed to your RSS aggregator MP3 Â– Download the MP3 directly Rundown News: 2022 GMC Hummer EV reveal SSC Tuatara production car speed record Cars we're driving2020 Lincoln Continental Coach Door Edition 2021 GMC Canyon AT4 Feedback Email Â– Podcast@Autoblog.com Review the show on iTunes Related Video:

GM recalling 686k Lambda-platform models for hatch repair

Fri, Jul 10 2015

General Motors is recalling 686,287 units of its Lambda platform crossovers. On models equipped with a power rear hatch the system can potentially fail. This campaign includes the 2008-2012 Buick Enclave, 2009-2012 Chevrolet Traverse, 2007-2012 GMC Acadia, and 2007-2010 Saturn Outlook. According to GM's documents to the National Highway Traffic Safety Administration (as a PDF), dirt can get into a portion of the strut that holds up the hatch and cause the part to prematurely fail. There's a redundancy in place called the Prop Rod Recovery system that's designed to shut the liftgate if there's a malfunction. However, if the breakdown happens too quickly after the hatch is opened the prop rod might not work the way it's supposed to. If someone were in the way of the falling liftgate, they could be hurt. For the repair, dealers will update the software for the power liftgate actuator motor control unit to prevent the hatch from closing so quickly. They'll also check the operation of the system afterward. Related Video: RECALL Subject : Liftgate Struts may Fail and Liftgate may Fall Report Receipt Date: JUN 30, 2015 NHTSA Campaign Number: 15V415000 Component(s): STRUCTURE Potential Number of Units Affected: 686,287 All Products Associated with this Recall Vehicle Make Model Model Year(s) BUICK ENCLAVE 2008-2012 CHEVROLET TRAVERSE 2009-2012 GMC ACADIA 2007-2012 SATURN OUTLOOK 2007-2010 Details Manufacturer: General Motors LLC SUMMARY: General Motors LLC (GM) is recalling certain model year 2008-2012 Buick Enclave vehicles manufactured January 3, 2007, to February 29, 2012, 2009-2012 Chevrolet Traverse vehicles manufactured July 6, 2008, to February 29, 2012, 2007-2012 GMC Acadia vehicles manufactured September 15, 2006, to February 29, 2012, and 2007-2010 Saturn Outlook vehicles manufactured August 17, 2006, to March 18, 2010. The affected vehicles, equipped with the power liftgate option, have gas struts that hold the power liftgate up when open. These struts may prematurely wear and the open liftgate may suddenly fall. CONSEQUENCE: If the open liftgate unexpectedly falls, it may strike a person, increasing their risk of injury. REMEDY: GM will notify owners, and dealers will update the software for the power liftgate actuator motor control unit so that the motor will prevent the rapid closing of the lift gate, free of charge. The manufacturer has not yet provided a notification schedule.