Latest news with #Duramax
Motor 1
16-05-2025
- Automotive
- Motor 1
The 2025 Chevrolet Silverado ZR2 Simply Rocks: Review
Quick Specs 2025 Chevrolet Silverado ZR2 Specs Engine Turbocharged 3.0-liter diesel I-6 Output 137 Horsepower / 470 Pound-Feet Fuel Economy 20 City / 23 Highway / 21 Combined MPG As-Tested Price $73,875 On-Sale Date Now Pros: Roomy, Refined, Decently Efficient Cons: Less Power With Diesel, V-8 Reliability Concerns Chevy Silverado ZR2: Damn, This Thing's Good It's best not to mince words: The 2025 Silverado 1500 ZR2 is fantastic. If I had the need for its vast capabilities and access to the vast acres of space within which to operate this full-size Chevy, I'd probably have a ZR2 in my driveway. A week with the truck served as a perfect reminder why half-tons are America's darlings, offering a Goldilocks mix of comfort, capability, and versatility that remains unmatched on the market. If you're looking for a truck in this segment (full-sized off-road supertrucks), here's where you should start looking. But it begs the question: which engine should you choose? Engine, Horsepower, Drivetrain: There's Really One Choice Our tester's engine bay held the Duramax 3.0-liter turbodiesel inline-six in place of the optional 6.2-liter V-8 gasser ( Editor's Note: The red truck pictured throughout this review uses the gas V-8 ). What this diesel gives up in power, it snatches back in torque, churning out 470 pound-feet of twist and a modest 305 horsepower. Either engine pairs to GM's brilliant 10-speed automatic, which transforms this diesel into a seamless, gas-like mill. Of course, there's four-wheel drive with high and low ranges, courtesy of a two-speed transfer case. With its smooth, quick, and effortless-feeling shifts, this 10-speed holds the Duramax in its power-band sweet spot. It's hard to overstate: this is seriously smooth diesel. If it weren't for the engine note, you'd think this civilized diesel was indeed a gas-powered V-8. We capped a 500-mile road trip in the ZR2 with some light off-roading and even a little tow without a single misstep from the engine and drivetrain. The diesel performed flawlessly, returning EPA-expected efficiency, and that surprisingly delightful refinement in spades. But ultimately, the 6.2-liter V-8 wins on power, flexibility, and aura. If you can afford the V-8. Do it. Technology, Interior, Infotainment: All The Bells & Whistles Photo by: Chevrolet The 12.3-inch digital instrument cluster abuts a huge, horizontally oriented touchscreen that stretches 13.4 inches across the center of the dashboard. Both function excellently, in particular, the center screen, which is laid out in an efficient and visually pleasing manner. Key features like a 3-D top-down camera and rear cross-traffic braking help you maneuver this behemoth. Crucially, Apple CarPlay and Android Auto both work in this truck, even as Chevy has said it'll back away from both in the future. While that dashboard can look a bit busy at times, it's packed with all the info you'll need when towing, hauling, or off-roading, and the truck comes with more safety and emergency features than you could shake a stick at. You'll pay the price to step into a ZR2, but you won't lack for any major tech features here. Design: This Looks Alright. RAM Looks Better Photo by: Chevrolet You'd never miss the Silverado ZR2 in a striking shade like Riptide Blue. This glittering blue does much to help the ZR2 stand out in a crowded Home Depot parking lot, but also accentuates the size of this massive truck. Either pick a darker color to shrink the truck visually, or let your Riptide freak flag fly. Chevy's gone searching here; the Silverado in general looks far busier up front than its more traditionally styled GMC counterpart, while the ZR2 in particular looks even busier than equivalent supertrucks from RAM and Ford. That discrepancy comes courtesy of those boomerang-shaped running lights up front and a particularly aggressive and angular grille treatment. The rest of the ZR2's exterior trades in the typically muscular lines of a full-size pickup; broad, flat surfaces punctuated by a few lengthy character lines. Off-road goodies included with the ZR2 trim do their part to butch up the Silverado's presentation, especially a slightly lifted suspension and the right set of 33-inch Goodyear Wrangler Territory off-road tires, their knobby treads riding on mile-high sidewalls. This is a chiseled, imposing truck, just not a handsome one. Passenger + Cargo Space: Hugely Useful The Silverado is obviously a big vehicle. If you need a huge bed for hauling or enough interior space to sit five grown adults in comfort for hours, there is no competitor for a full-size pickup on either count. If you wonder why big trucks continue to outsell basically everything else in America, here's your answer: nothing is more versatile than this truck. The 62.9 cubic-feet bed stretches nearly 70 inches in length, accommodating whatever you'll haul away from Home Depot each weekend Driving Impressions: An Impressive Powertrain The 3.0-liter turbodiesel 'six does a fabulous V-8 impression here, burbly and stout, riding a cresting wave of easy torque at all times. That's courtesy of a brilliantly calibrated 10-speed transmission that slips between cogs seamlessly, smoothing out any drivetrain harshness to a glass-flat experience. As with the smaller Colorado ZR2, our Silverado's Multimatic dampers and heaps of tire sidewall make for class-leading ride quality. The cabin insulates the driver and passenger(s) from road vibrations and frequencies, creating a quiet and deeply pleasant place to plant your backside. Worth noting: For a big truck, the ZR2 felt surprisingly easy to live with in my small-town-slash-suburb north of Seattle. I was able to make one-point U-turns on city streets that regularly take a two-point approach in my own Toyota 4Runner, a vehicle with a much smaller wheelbase. That maneuverability helps shrink the edges of the truck. Well, not in reality, but it makes the truck feel smaller, which makes you stress less about aiming the Silverado through a Costco parking lot on Sunday morning. Overall, this thing handles nicely and in excellent comfort. Fuel Economy: Ain't Too Shabby What would you guess a big diesel truck like this gets on the EPA cycle? If you're anything like me, the number you guessed is closer to 10 than to 25 miles per gallon on the highway. My observed mileage over about 500 miles round trip, covering a good chunk of interstate at around 80 mph and some rural two-lanes averaging 60 miles per hour, hit that 23 mpg mark no problem. The EPA rates city mileage at 20 mpg, leading the Silverado ZR2 to a 21 mpg average rating from the EPA. Pricing + Verdict: Good Diesel. Great V-8. The ZR2 starts at $70,000. Another $2800 was tacked on to our truck, adding handy features like the head-up display and adaptive cruise control (courtesy of the $2040 technology package), the multiflex tailgate ($445), and of course that riptide blue paint ($395). With destination included, that's $74,875. Not cheap. But in line with the current state of fully loaded full-size off-road pickups across the market. I'd take this diesel Silverado ZR2 home in a heartbeat. But back-to-back drives with a relative's 6.2-liter GMC showed exactly why the V-8 rules the land. It's a more flexible, punchy, and powerful engine. It makes the right noises and pairs to the same 10-speed for an easygoing swagger down Main Street or the Interstate. You take a slight hit in price on the V-8 (add an extra $1700-ish) and a negligible dent in fuel economy. However, GM is in the middle of a recall of nearly 600,000 vehicles (including the Silverado) equipped with the mighty 6.2. You might wait to see how that shakes out before buying, or buy one under MSRP right now if you're a gambler. Competitor Reviews Ford F-150 Raptor Ram 1500 RHO FAQs Is The Chevy Silverado ZR2 Better Than the F-150? For off-roading/rock crawling set who don't need to blast across the desert at 100mph in an F-150 Raptor, the ZR2 leads its class. What Is the Gas Mileage of the Silverado ZR2? The EPA rates the ZR2 at 20 city, 23 highway, and 21 combined miles per gallon. We observed slightly better mileage during highway use. Does the Silverado ZR2 Have All-Wheel Drive? Yes! In addition to two- and four-wheel drive modes, the ZR2 has a two-speed transfer case for high and low-range four-wheel drive operation. 2025 Chevrolet Silverado ZR2 Engine Turbodiesel 3.0-liter Inline-Six Output 305 Horsepower / 495 Pounds-Feet Transmission 10-Speed Automatic Drive Type Four-Wheel Drive Weight 5,798 Pounds Seating Capacity 5 Towing 8,700 Pounds Base Price $71,995 Trim Base Price $71,995 As-Tested Price $73,875 On Sale Now Share this Story Facebook X LinkedIn Flipboard Reddit WhatsApp E-Mail Got a tip for us? Email: tips@ Join the conversation ( )
Hans India
15-05-2025
- Automotive
- Hans India
LLY EGR Delete Gains: What Performance Benefits Can You Expect?
The 6.6L LLY Duramax diesel engine, introduced in 2004, quickly established itself as one of the most reliable and performance-ready powerplants in the heavy-duty pickup truck segment. However, like many diesel engines produced in the early 2000s, the LLY was outfitted with an Exhaust Gas Recirculation (EGR) system aimed at reducing emissions to meet federal environmental regulations. While this system plays a critical role in limiting nitrogen oxide (NOx) emissions, it is often cited as a limiting factor in the overall performance, efficiency, and longevity of the engine. As a result, many owners of LLY Duramax-equipped vehicles have explored the option of removing the EGR system altogether — a process commonly referred to as an 'EGR delete.' In performance-driven diesel communities, EGR delete kits have become a popular modification, especially for off-road, race, and heavy towing applications. In this article, we explore the performance gains and mechanical benefits you can expect from an EGR delete on the LLY Duramax engine. Why Consider an EGR Delete on the LLY Duramax? Before diving into the specific gains, it is important to understand the fundamental reasons why many vehicle owners choose to eliminate the EGR system. The EGR system functions by redirecting a portion of the exhaust gases back into the engine's intake manifold. This is done to reduce combustion temperatures and thereby lower NOx emissions. However, introducing exhaust gases into the air intake system often results in higher soot levels, increased carbon build-up, and reduced engine efficiency over time. From a performance standpoint, the EGR system can inhibit optimal airflow, elevate engine operating temperatures, and cause premature wear to vital components. When deleted, the engine is able to operate under cleaner conditions, often resulting in noticeable improvements in horsepower, torque, throttle response, and fuel economy. What Benefits Can Gains From LLY EGR Delete Kit? For owners of the 6.6L Duramax LLY, maximizing both performance and reliability is essential. The DynoVox EGR Delete Kit for this engine is designed to deliver a range of benefits that cater specifically to the needs of Duramax powerplants. 1. Noticeable Increase in Horsepower and Torque One of the most tangible benefits of performing an EGR delete on the LLY Duramax is the immediate improvement in power output. By removing the EGR valve and associated piping, the engine no longer recirculates hot, oxygen-depleted exhaust gases into the combustion chamber. Instead, the engine receives cooler, denser, and cleaner air, which enhances combustion efficiency. Dynamometer testing has shown that a properly tuned LLY Duramax with a complete EGR delete can gain between 20 and 40 additional horsepower. Torque gains can reach up to 50 lb-ft, especially when the EGR delete is paired with other modifications such as upgraded intakes, free-flowing exhaust systems, or performance tuners. These increases are particularly beneficial for trucks that are used for towing, heavy hauling, or competitive motorsports. 2. Improved Fuel Economy Efficiency is another critical area where the EGR delete has a measurable impact. Because the engine no longer processes exhaust gases, combustion temperatures and cylinder pressures stabilize in a way that promotes more efficient fuel burn. This means that less fuel is required to produce the same amount of power. Many LLY owners report a fuel economy improvement of 1 to 2 miles per gallon after deleting the EGR system. While the exact results will vary depending on driving habits, terrain, and other modifications, this improvement can result in substantial long-term fuel cost savings, especially for fleet owners or high-mileage drivers. 3. Reduction in Soot and Carbon Build-Up Over time, the reintroduction of exhaust gases through the EGR system leads to a buildup of soot and carbon deposits within the intake manifold, EGR valve, and even the turbocharger. This accumulation can clog air passages, restrict airflow, and reduce engine responsiveness. In severe cases, it may lead to misfires or even engine failure. By deleting the EGR system, the engine remains significantly cleaner internally. The absence of carbon-laden exhaust gases in the intake eliminates one of the primary sources of deposit formation. This results in a more consistent air-fuel mixture and less frequent maintenance related to intake cleaning or EGR valve replacement. 4. Lowered Engine Operating Temperatures A lesser-known but equally valuable benefit of EGR removal is the reduction in engine coolant and oil temperatures. Because the EGR system returns hot exhaust gas to the intake, it raises the overall thermal load on the cooling system. Without this additional heat source, the cooling system is better able to maintain optimal engine temperature under heavy load or extreme ambient conditions. This temperature reduction can prolong the life of internal engine components, turbochargers, and gaskets, ultimately reducing the likelihood of overheating or head gasket failure in high-performance or towing scenarios. 5. Enhanced Turbocharger Efficiency and Reliability The turbocharger on the LLY Duramax engine is designed to compress intake air and deliver it to the combustion chamber for more powerful explosions. When exhaust gases are mixed into the intake, the effectiveness of the turbo is compromised due to reduced air quality and increased contamination. Deleting the EGR allows the turbocharger to work with cleaner air, resulting in better spool-up times, more consistent boost levels, and reduced wear. In the long term, this contributes to improved turbo longevity and more responsive acceleration, especially during uphill climbs or heavy-load acceleration. Long-Term Value and Engine Longevity The long-term impact of an EGR delete cannot be understated. With less soot entering the engine, vital systems remain cleaner for longer, and internal wear is significantly reduced. Maintenance intervals may be extended, and the likelihood of EGR-related failures—such as stuck valves, clogged passages, or faulty sensors—is entirely eliminated. For those who intend to keep their vehicles for hundreds of thousands of miles, investing in an EGR delete kit can yield measurable reliability benefits. When paired with high-quality synthetic oil and a consistent maintenance routine, an LLY Duramax with an EGR delete may easily exceed 300,000 miles with fewer mechanical issues than its stock counterpart Considerations Before Performing an EGR Delete While the benefits of an EGR delete are compelling, vehicle owners must consider the legal and environmental implications. In many regions, removing or modifying emissions control equipment is not permitted for on-road use. The EGR delete should only be performed on vehicles used for off-road, competition, or agricultural purposes where emissions compliance is not required. Additionally, any modifications should be paired with proper tuning. Failure to tune the engine after deleting the EGR can result in check engine lights, improper fueling, or reduced drivability. It is crucial to source your delete kit and tuning software from a reputable manufacturer or authorized dealer. Choosing a High-Quality EGR Delete Kit When selecting an EGR delete kit for your LLY Duramax, it is essential to invest in a system that offers both durability and compatibility. DynoVox provides premium EGR delete kits engineered specifically for the 2004–2005 LLY Duramax engine. These kits feature precision-machined components, high-grade gaskets, and clear instructions for installation. DynoVox's kits are designed for performance applications and have been field-tested to ensure optimal performance gains and engine safety. Whether you're upgrading your work truck or preparing your vehicle for competition use, DynoVox offers a solution that combines engineering precision with real-world results. Buy Now: Dynovox 6.6L Duramax LLY EGR Delete Kit 10% OFF Code for DynoVox: DYBL10 Conclusion Performing an EGR delete on the LLY Duramax engine can yield numerous performance and longevity benefits. These include increased horsepower and torque, improved fuel economy, cleaner engine internals, reduced operating temperatures, and enhanced turbocharger efficiency. While the EGR system was introduced to meet emissions standards, its removal in appropriate applications can unlock the true potential of the Duramax platform. However, it is essential to ensure that your intended use complies with local emissions regulations and that the delete is performed properly with suitable tuning. When done correctly and legally, an EGR delete stands out as one of the most impactful upgrades for any performance-driven LLY Duramax owner.
Yahoo
14-05-2025
- Automotive
- Yahoo
Truck owners: Check if you're entitled to money in fuel injector pump settlement
People who purchased select models of Chevrolet and GMC trucks may be eligible for payments of up to $12,700 as part of a $35 million settlement involving defective fuel injector pumps. The settlement pertains to 2011-2016 Chevrolet Silverados and GMC Sierra diesel trucks equipped with 6.6L Duramax engines and Bosch 'CP4' high-pressure diesel fuel pumps. According to a press release from the JND Legal Administration, the lawsuit pertains to these pumps being 'unreasonably fragile and susceptible to catastrophic failure.' While General Motors denied the claims, the company has agreed to the $35 million settlement. Truck owners who purchased one of these models from a GM-authorized dealer in California, Florida, Illinois, Iowa, New York, Pennsylvania or Texas between March 1, 2010 and Sept. 13, 2024 may be eligible for settlement benefits. A VIN lookup is available to check if your truck is included in the settlement. A cash payment is available to truck owners who paid out of pocket for repairs to the CP4 fuel pump and available for folks who no longer own their truck and did not pay for a fuel pump repair. Partial cash back for future CP4 fuel pump replacements and repairs are also available in some circumstances, according to the settlement website. People who paid out of pocket for a CP4 repair that was not covered by warranty could receive between $6,356 and $12,712, while folks who no longer own their trucks and did not pay for repairs could receive between $400 and $800, depending on how many valid claims are received. A partial repair reimbursement program also offers cash back on future CP4 repairs performed at a GM-authorized dealership on or after the date of final approval of the settlement. You can file a claim online, or submit a paper claim form to info@ or GM Fuel Pump Settlement, c/o JND Legal Administration, PO Box 91445, Seattle, WA 98111. The deadline to file a claim is six months after the court issues final approval; the hearing on the final settlement is scheduled for April 25. Claims require supporting documentation, such as proof of purchase and proof of repair. Zack Kelly optioned to Worcester; here's what Red Sox want to see improve Worcester Mayor Petty kicks off campaign, pledges to replace old school buildings Chicago Schools leader Pedro Martinez selected for top education post in Mass. MIT astronomers discover new planet 'on its last breath' New trial, new approach: No 'framed' arguments, but Karen Read defense hammers fired investigator Read the original article on MassLive.
Irish Daily Star
22-04-2025
- Automotive
- Irish Daily Star
General Motors set to pay up to $12,700 to owners of two trucks
Owners of two different truck models made by General Motors could see the company paying them up to 412,700 after a preliminary settlement of $50 million. As tariffs threaten higher prices on new cars and lost jobs , despite promises from the President that they could spur 'new growth,' General Motors was handed a blow due to the settlement. The settlement came after years of complaints over a fault in the injection system that left many drivers without cars and with a costly bill. Affected models with Duramax engines manufactured between 2011 and 2016, had faulty Cp4 fuel pumps, which were incompatible with diesel sold in several states. Read More Related Articles Donald Trump's insulting three-word response when asked about higher car prices Read More Related Articles Donald Trump says new auto plan 'could be good for Tesla' in major announcement When the systems failed, they contaminated the entire fuel system, rendering cars useless. Chevy Silverado trucks are among those that have been affected by the problem and whose owners could be compensated. The affected models were on Chevrolet Silverado and GMC Sierra trucks with the pumps, which are not designed for U.S. fuel. The pumps could then break internally, and release metal shavings that damaged injectors, rails, pipes and the fuel tank–which would cost more than $10,000 to repair. Those affected could be paid up to $12,700 per vehicle, depending on the damage suffered and if the car is still in the person's possession or had been sold. Drivers in six states who purchased their vehicles there and had the trucks repaired for the issue could recover what they spent. The states are California , Illinois, Iowa, Texas , New York and Pennsylvania . Those who could benefit from the preliminary settlement will need to take a few steps to guarantee their payout. If they collect repair bills, workshop reports, and papers proving the care was theirs, they will be able to submit a claim once the official website is opened to do so. GM has not at any point admitted to a design flaw, though they have agreed to pay whatever the settlement determines they should. It appears GM doesn't want to drag out a trial or damage its image further with the case. Case documents show that GM knew the pumps didn't work well with local diesel from the beginning, but kept installing it for years anyway.
Yahoo
12-03-2025
- Automotive
- Yahoo
Why Chevy's 8.1L Vortec Was The Last Of The Big Block Era
Chevy's Vortec 8100 — AKA the L18, AKA the Vortec 8.1 — was the last of The General's big block V8s, a line of engines that traced its lineage clear back to the fire-breathing muscle cars of the '60s and early-'70s. Descended from the legendary big block 454, an engine that has powered countless muscle cars and hot rods throughout the decades, it debuted in 2001 as the Silverado 3500's power plant. It was both an answer to the competition's huge truck mills — the massive, powerful V10s offered by cross-town rivals Ford and Dodge — and a cheaper alternative to the big, expensive Duramax diesels GM offered at the time. Produced at the Tonawanda engine plant in Buffalo, NY, with blocks cast at Saginaw Metal Casting Operations, the 8100 displaced 496 cubic inches, had a four-and-a-quarter bore, and 4.37-inch stroke. In stock trim, it produced 340 horsepower and 455 pound-feet of torque — most of it between 1200 and 4000 RPM. This was within spitting distance of the Duramax's output and was extremely competitive with Ford and Dodge's big V10s. With all that torque on tap, and with it coming on so soon, the 8100 made for an excellent towing and hauling engine. Throughout nearly a decade of production, the 8100 powered everything from pick-ups to boats to U-Haul trucks. Workhorse, now a Navistar joint, used the engine to power a line of motorhomes and throughout the aughts. At that time, it was one of the most popular gas-powered engines for class A motorhomes. It was even used to power a Russian-built, GM-based armored vehicle called the T-98 Kombat. Read more: These Are The Dumbest Car Myths By the mid-aughts, it was already clear that the big block era was coming to a close. Increases in gas and diesel engine technology combined with the Vortec 8100's single-digit fuel economy made it increasingly more difficult for The General to justify its production. The 6.0-liter LS V8 offered up to 360 horsepower and 380 foot-pounds of torque with better fuel economy. On the diesel side, GM was switching over to turbodiesel mills for its towing and commercial rigs. The new (at the time) Duramax was pumping out 650 foot-pounds of torque, nearly half as much as the 8100, and it was doing it cleaner and more efficient. GM axed the 8100 for use in its pick-ups and SUVs, as well as the Avalanche after the 2007 model year. The big V8 soldiered on in the Kodiak/TopKick trucks for a little while longer, but it just didn't make financial sense to keep the 8100 around anymore, legacy or not. The last Vortec 8100 was produced in late 2009, and that closed the book on GM's legendary big block V8 era. Want more like this? Join the Jalopnik newsletter to get the latest auto news sent straight to your inbox... Read the original article on Jalopnik.
