The Sierra Denali that I drove, in fact, incorporated not one single option. Visually, rear-wheel turn appears modest, but the amount they do turn yields dramatic performance dividends. If you demand total steering compliance from a tow vehicle, along with stability and maneuverability from what's being towed, the Sierra Denali with Quadrasteer is just the ticket. For towing situations, there's an even further refinement: counter-steering is reduced at lower speeds, while parallel steering is increased at higher speeds. My repair invoice states that they used part number 89021677 to service it. Sure enough, the clues were there all the time. How ironic then and disappointing to motor up the gentle incline of my driveway one evening as a freshet of cold, clear water cascaded out of the sunglasses bin in the overhead console.
Hitching the Sierra Denali to a Holiday Rambler Alumascape travel trailer, we set out to test the setup. The steering system was popular for people who frequently tow boats, , or other large equipment. It does pretty well off road until you lose control and wreck it like my brother did. Standard features of the Sierra Denali include a Vortec 6000 that develops 325 hp and 370 lb-ft of torque. Such a system can be a useful feature to people who tow regularly, as it enables a person to turn their vehicle in tighter spaces than if they had a regular steering system.
Too bad its not going to mine anymore for i am going to upgrade very soon!! And backing a trailer down a narrow boat ramp or trying to park in a crowded parking lot become geometrically easier exercises. When you're parking or traveling slowly, the rear wheels turn in a direction opposite that of the front wheels. Below 45 mph, the rear wheels can steer up to 12 left or right. A differential is a differential. Fresh, gray, and waste tank holding capacities are 40 gal each.
All by itself, this improves towing performance, especially under slick-surface conditions. It accelerates okay its not the fastest but it gets you from point a to point b. Not at first, that is. 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. That's just about the turning radius of any compact coupe. TransmissionFilter selectedTransmissionList, transmissionTemplate ; } listingsSearchManager. Obscure principles What's less obvious is the principle of Quadrasteer.
DealRatingFilter selectedRatingList, null ; ratingFilter. I would tend to agree that there wouldn't be a difference but the dealers comment prompted me to do a little research myself. We also added an electronic brake controller that actuates the trailer's electric brakes when the brake pedal is applied. 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. Wes handled the final paperwork with ease! Such, I have since learned, is the nature of the Quadrasteer system, which endows a land yacht like the Sierra Denali with the unprecedented maneuverability of four-wheel steering. I don't see why it would be any different.
With lengths ranging from 26 to 35 ft, the Alumascape is 10 ft high including roof air and 98 in. After the initial sensation of novelty wears off, in fact, it's unlikely you'll ever crave two-wheel steering again. You can consider Quadrasteer the robot equivalent of the fireman who steers from the rear of one of those long-trailered ladder trucks. In two-wheel-steering mode, the Sierra describes a 46. FuelTypeFilter selectedFuelTypeList, null ; fuelTypeFilter.
At lower speeds, it turns in opposite direction of the forward wheels to a maximum of 15°, or 12° in trailer mode, decreasing the turning radius as much as 21%. I took it to my local dealer and they replaced the rear end and the steering unit and it worked great, for about 2500 miles. Rainwater, it seems, must have seeped under the trucker's lights installed into the center of the roof. NewUsedFilter selectedNewUsedList, null ; newUsedFilter. And when I parked at the post office, I almost clipped the car I was parking aside, because this hulking beast of a truck made the turn so much more abruptly than logic or my experience led me to anticipate. EngineFilter selectedEngineList, null ; engineFilter.
TruckCabinFilter selectedCabinList, null ; truckCabinFilter. Once in place, it fits as tight as a drum skin; and despite its complicated-looking design, with removable ribs and bulkheads, it's actually quite easy to put on and take off. By using various sensors around the vehicle, a microprocessor computes the correct rear-wheel position and actuates an electric motor to turn it accordingly. The following site states exactly what he told me. Check this out with the manufacturer or the service center where you purchased and had it installed. Several floor plans feature double slideouts. This created a little indoor wading pool just waiting to douse The Wife with a mood-shattering, teeth-chattering cold shower.
Supposedly there is a special lube for quadrasteer rear axles and they used a synthetic, the same as all the other trucks. The body flares over the rear wheels are another giveaway: they're meant to enlarge the wheel well to accommodate the greater space necessary for housing the rear wheels at their maximum turning angle. Then it started grinding and squeeling again. At higher speeds the system will turn the rear wheels slightly in the direction of the front wheels so as to increase stability and control. All Alumascape Travel Trailers feature at least one slideout room. The chief disadvantage of this body style, however, is the back-hinged rear doors that require the front doors to be opened before the rear door handles can be reached. The fact that there's some steering mechanism hung on the outside and the wheels can pivot a bit shouldn't change that.
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. However, I don't know the scope of damage that could be done if you use the wrong lube. He claims that it wouldn't have caused this but I'm not entirely convinced. The rear axle is based on the axle. That said, I could find nothing in our service information that indicates the lube for the rear axle on a quadrasteer truck is any different than any other axle. Now, it's at the dealer again and they found metal shavings in the rear axle casing. InstalledOptionsFilter selectedInstalledOptionIdList, installedOptionIdToLabelMap, possiblyDroppedOptionsMap ; installedOptionsFilter.