2010 Chevrolet Avalanche 1500 Ltz on 2040-cars

Auto blog

'Killing a Duramax' Gale Banks YouTube series methodically tunes a diesel to death

Learning or perfecting a skill by watching YouTube videos is known as attending YouTube University. GM Authority picked up on one of the video site's more fascinating courses, hosted by Gale Banks; in a fair world, he should be referred to as Professor Banks when it comes to diesel engines and truck tuning. A few months after GM introduced the updated L5P 6.6-liter Duramax diesel V8 in the 2020 Chevrolet Silverado HD and GMC Sierra HD that ships with 454 horsepower and 910 pound-feet of torque, Banks decided he wanted to methodically tune the engine to death. The purpose of the resulting series, called "Killing a Duramax," is to push more power out of the engine in order to discover which parts break and when — or, as Banks puts it, force-feed the Duramax "until the crank hits the street and the heads hit the hood." With that knowledge, Banks can figure out all the weak points on his way to building what he calls a "Superturbo," that being a supercharged, twin-turbo race engine with more than 1,000 hp. What makes the series fascinating is Banks' knowledge, paired with the company's comprehensive iDash engine monitoring system that keeps tabs on a glut of parameters every step of the way. So for instance, you get Banks explaining the differences between inches of mercury and barometric pressure, how those are different from the water content of the air measured in grains, then showing those readouts on the iDash, then explaining in detail how they affect the air density in the Duramax system. The stock Borg-Warner variable turbo gets a lot of airtime — Banks accuses it of being "out to lunch" because he feels it's the weakest link on the engine. That turns into a turbo teardown and a deep explanation of performance pitfalls, such as when air pressure on the turbine begins to diverge from the boost pressure coming from the compressor. Banks says he can keep close tabs on where power's coming from, because the iDash monitors the horsepower contribution provided by the ambient air, the turbo, and the intercooler separately. The major changes so far are a stouter Precision 7675 turbo and TurboSmart wastegate (episode 5), a twin intake (episode 6), a custom liquid-cooled intercooler from a marine engine, a new GM oil cooler and synthetic oil (episode 10), and new injectors (episode 11).

Costco Auto Program adds the Chevy Silverado and GMC Sierra through July

Costco members lean to the Bowtie when it comes to pickups. The big box store wrote that the Chevrolet Silverado "is currently the most requested Chevrolet and pickup truck through Costco Auto Program and has been for the past 11 years. In the 14 years Costco has partnered with Chevrolet for member-only incentives, the Silverado (when included), has been the top selling vehicle every time." Members can rejoice, because just for the months of June and July, the Costco Auto Program has added the Silverado and the GMC Sierra to its Costco Auto Savings Event. Until July 31, 2024, card-carrying shoppers can get an additional $1,000 discount on top of any manufacturer incentives they qualify for when leasing or purchasing new examples of either. The Auto Savings event includes other vehicles as well, the $1,000 incentive applicable to certain other models from Chevy and GMC, as as well Volvo and Cadillac. Tire kickers considering the Polestar 2 can get $2,000 off.  You can check out our write-up on the Costco Auto Program for all the details and the frequently asked questions. The summary is that the store works with "selected" dealers to refer customers to, about 3,000 storefronts across most automotive brands. The program comes with no-haggle pricing for any straight-up purchase. Costco offers customers a research tool to check out vehicles by type and compare specs and features. After a customer zeroes in on a car, it's time to visit the dealership for a chat with an "Authorized Dealer Contact" to examine the vehicle and go over the fine print. Haggling would only arise if the customer has a trade-in; that valuation is between the customer and the dealer. The customer can check out the Costco Member-Only Price Sheet, which "displays your prearranged pricing. The savings can be displayed in one of two ways: One version lists pricing for all models available at the participating dealership; the other will show a VIN-specific price based on the vehicle you select, including any applicable manufacturer incentives or rebates." And for those looking on the battery-powered shelves, the program offers the same $1,000 off the Chevy Blazer EV and Equinox EV.

EarthCruiser adds a bigger camper option to its heavy duty pickup line

EarthCruiser is a camper and expedition vehicle company based out of Oregon that we've previously covered for its huge commercial truck-based machines. But they offer more than that, from drop-in campers for smaller pickups to heavy duty pickup conversions. The company's latest product is one of the latter, offering a larger camping area than the current EXD model. This new camper conversion is called the Terranova. The big differentiator between it and the EXD is the camper section, which extends over the truck cab on the Terranova. This means that bed space can be moved to above the truck cab, instead of having to use a convertible dinette. So less reconfiguring, and generally more usable space. One other major difference is that the EXD is only available for the Ram 3500 and Ford F-350. The Terranova is being designed for both of those trucks as well as the Chevy Silverado 3500. The EarthCruiser Terranova is otherwise very similar to other EarthCruiser models. The camper section is made of fiberglass and plastic, and the pop-up roof is insulated with foam. The curtains are triple-layered. The company says it can house four people. It comes with a freshwater tank and pump to help supply the kitchen sink, drinking water tap, bathroom sink and indoor and outdoor showers. There's also a cassette toilet. The kitchen features an induction stove top and small refrigerator and freezer. A fan system is standard, and air conditioning is optional. Power comes from a 400-aH lithium-ion battery. The Terranova isn't yet available. EarthCruiser is finishing up design and engineering, and it plans to have finished examples early next year. The company is taking reservations now, though. Pricing hasn't been announced, but an EXD runs between $220,000 and $265,000, and we would expect the Terranova to cost even more. Related Video: Featured Gallery EarthCruiser Terranova Expedition Camper renderings Chevrolet Ford RAM Truck Off-Road Vehicles Special and Limited Editions RVs/Campers