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Where the 2023 GMC Sierra AT4X fits into the hierarchy of off-road trucks

The world of off-road pickups sure seems like it's getting crowded, but the reality is that half-ton trucks were always pretty capable, even with what seemed like fairly basic 4x4 packages. It wasn't until recently that manufacturers really started to carve out different off-road niches for their mainstream pickup offerings. With the introduction of the 2022 GMC Sierra 1500 AT4X (alongside its mechanical twin, the Chevy Silverado ZR2), the crowd has grown even thicker. Even we have trouble keeping up with the increased segmentation of off-road pickup trucks, so we threw together this handy guide to help you understand just where these various packages fit into the broader pickup hierarchy. Let's dive in.  Your basics If we say "Z71" or "FX4" to you, both will probably ring a bell. That's because they've been around a few days short of forever and their respective customers have grown so used to these package codes that OEMs got into the habit of just plastering them on the side of so-equipped truck beds. Anybody who sells a pickup truck offers some sort of basic off-road prep package like this one. Z71 is found on GM vehicles; FX4 is Ford's. Ram just calls it "Off Road Group," but no matter what you call them, they're all pretty similar.  Typical upgrades for this category include some additional ground clearance, a basic all-terrain tire, heavy-duty suspension upgrades and likely either a limited-slip or locking rear differential. These are pretty handy for anything beyond a rutted dirt road. On newer trucks — especially on higher trim levels — you'll probably also get some dedicated off-road drive modes.  Mid-range This is where things start to get interesting. To qualify for this category, a locking rear differential is a must. Most of the names in this segment are well-established too, though some (Nissan Titan Pro-4X, anyone?) may not necessarily be on your radar. The Toyota Tundra TRD Pro checks in here, as does the Ram Rebel, Chevy Silverado Trail Boss and GMC Sierra AT4 (no X!).  Realistically, if there's somewhere you need to go and one of these trucks won't do it, you might want to consider a helicopter. But it's 2021, and our thirst for capability is strong, so of course, there's a way to spend more of your money on this type of thing. Onward! Entry-hardcore Here we are, the home of the new 2022 GMC Sierra AT4X and Chevrolet Silverado ZR2. This is a tiny niche, otherwise occupied only by the Ford F-150 Tremor.

Ford halves summer shutdown, ramps SUV production

For the third consecutive year, Ford is reducing the length of its summer shutdown for several factories to keep up with high demand for some models. This year, the decision means 40,000 more units of popular trucks and crossovers like the F-Series, Edge, Escape, and Explorer. Rather than the normal two-week break, workers at the Chicago, Dearborn Truck, Kansas City, Kentucky Truck, Louisville, and Oakville factories will only get a week off starting on June 29. Additionally, 10 plants for producing components to support these assembly lines will also have the shorter vacation. The rest of the Blue Oval's manufacturing locations will shutdown from June 29 to July 10 for maintenance and retooling. According to Ford, the decision comes because of low inventories and high demand on some of its popular models. The 2015 F-150 is lasting around 20 days at dealers, and the Edge spends an average of 10 days before being sold. Ford is hardly alone in deciding to keep locations open during the normal summer break, though. FCA recently made the decision not to shutdown four assembly plants and all of its factories for components to keep up with demand for models like the Jeep Cherokee, Grand Cherokee, and Dodge Durango. Related Video: FORD REDUCES SUMMER SHUTDOWN TO MEET DEMAND FOR FORD F-SERIES TRUCKS, EDGE, ESCAPE AND EXPLORER JUN 2, 2015 | DEARBORN, MICH. In response to increased customer demand, Ford will add capacity this summer to produce its most popular trucks and utilities Ford will shorten its summer shutdown from the traditional two-week summer shutdown to one week for a majority of North American assembly plants, increasing production by close to 40,000 units In April, Ford F-150 was turning at just 20 days on dealer lots, Edge sales were up 78 percent, and Escape and Explorer remained in tight supply. 2016 Explorers are now hitting dealer lots In response to customer demand for Ford's newest products, the company this year will produce close to 40,000 extra units by idling select plants for only one week during what has been the traditional two-week summer shutdown.. "To meet surging customer demand for our top-selling trucks and utilities, we are continuing to run our North American facilities during the traditional two-week summer shutdown in order to add close to 40,000 units," said Bruce Hettle, Ford vice president, North America Manufacturing.

A cool boost to turbocharger performance

Since the advent of the forced-induction engine, we have been looking for ways to get every drop of performance we can. There are many approaches to getting additional power using better intercooling, water injection, or even adding nitrous oxide. One take on a short instant burst of power is being researched by Mahle and involves providing supercooled air to an engine, which allows it to burn a leaner fuel mixture and produce more power. The supercooling idea is not new and was examined by Ford in 1993 on the Mustang Mach III concept car, then brought up again in 2003 with the SVT F-150 Lightning concept. Ford called its system the SuperCooler; it was designed to work with any turbocharged or supercharged engine equipped with a water-to-air intercooler. The system on the Lightning concept used a small tank of antifreeze that was hooked up to the truck air conditioning compressor. The air conditioning compressor cooled the antifreeze down to about 30 degrees. The other side of the tank was hooked up to the air-to-water intercooler, which usually had a temperature over 100 degrees. Once the antifreeze was circulated from the tank into the intercooler, it would lower the intercooler temperature and provide for a cooler, denser air charge into the engine; the result was around 50 extra horsepower for a burst of about 30 seconds to a minute, depending on the size of the tank. The system for the Lightning was to be offered as a $750 option and would have been targeted towards drag racers and the like, as it could be used for a run down the drag strip and then re-cooled by the time the truck was back in line. The system was fairly non-intrusive – it only weighed about 25 pounds and did not require a new compressor or intercooler. But as with many concepts, it was ultimately scrapped. The technology was always stuck in the back of my mind, but with larger and more powerful engines being produced it could not find its place. With the advent of new fuel economy standards, we have seen small-displacement turbocharged engines pop up and they seem like the perfect candidate for this type of technology. Ford's EcoBoost 1.0-liter three-cylinder turbocharged engine, as used in the Fiesta and Focus, is one such candidate for this technology. It would add a negligent amount of weight but could provide a boost of 10 to 20 horsepower when needed, like merging onto the highway or catching up to traffic.