World’s Tallest GMC Pickup Truck In 2024

Summary

Regular maintenance and careful driving are the keys to getting the most mileage out of your car.
Knowledge of the owner’s manual can help prevent malfunctions and significantly increase the life of the vehicle.
GM pickups like the 2015 GMC Sierra 3500 boast solid engineering that, with proper care, can last for more than half a million miles.

In the realm of automotive longevity, few cars can boast the impressive feat of reaching half a million miles. Few cars make it past a quarter of a million miles without experiencing some kind of critical failure. This makes those who cross that threshold even more interesting, because it is not only the engineering quality behind the car, but the owners themselves and their unique history.

GMC is a popular manufacturer of reliable trucks, including the Sierra 2500 HD and Yukon, that are built to take a beating and keep going. In this case, the 2015 GMC Sierra 3500 HD takes center stage as the highest mileage. GMC take on the record. The owner managed to accumulate more than half a million miles on the Sierra’s original drivetrain and power transmission, and has no plans to get rid of it anytime soon.

To accomplish this, the owner, who is a very nice and knowledgeable person, explains the processes and maintenance behind taking a great photo all the way through. These measures include, among other things, regular maintenance services and conscious driving, which can significantly affect the wear and tear of the vehicle. Let’s look under the hood.

In order to provide you with the most up-to-date and accurate information possible, the data used to compile this article was obtained from General Motors, Chevrolet and GMC.

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The 2015 GMC Sierra 3500 Is A Very Practical Machine

For starters, the 2015 Sierra 3500 lives up to its “heavy duty” image name. With a diesel powertrain and electric transmission, the Sierra can handle any job. Some Diesel trucks will run forever with good care. Proud to be attractive carrying and loading capacity, the Sierra is the go-to choice for those looking for a tough, powerful performer. This will come into play when we discuss the owner of an impressive 500,000 mile Sierra.

In addition to the capabilities and capabilities, the 2015 Sierra is equipped with modern technology and tools that make it easier to manage and complete difficult tasks. Features including Wi-Fi and smartphone connectivity are important features among professions that require a versatile vehicle. This not only allows the work truck to do more, it increases efficiency which can help along the way.

Duramax Turbo Diesel Power and Allison Transmission

The The 2015 Sierra 3500 HD has two engine options, those being the 6.0-liter Vortec V-8 L96 engine, and the more powerful and efficient, LML’s 6.6-liter Duramax turbocharged V-8 diesel unit. The owner, Brook Smith, chose to use a turbo diesel because of its power and efficiency. This allowed him to succeed in his profession, and save at the pump, which Brook admits has attracted many people with truck skills.

2015 GMC Sierra 3500 HD Diesel Special

Engine	6.6-L Duramax Turbo V-8 Diesel (LML)
Horse Power	397 @ 3,000 RPM
Torque	765 Lb.-Ft. @ 1,600 RPM
Contagion	Allison 1000 6-Speed Automatic
Driving lessons	Rear Wheel Drive
Maximum GVWR	13,200 pounds
Maximum Loading Rate.	5,702 – 7,490 pounds

(Source: GM)

Sending power to the rear wheels is a six-speed Allison 1000 transmission. Allison transmissions have been a staple in heavy-duty pickups for some time and are often chosen because of their proven responsiveness and longevity. In Brook’s case, the Allison transmission has proven to be as solid as a working transmission can be, which Brook can confirm with mechanical credentials and physical proof.

Sierra Interior Technology Takes The Term “Work Truck” To New Heights

As mentioned earlier, the capabilities of Wi-Fi and smartphone connectivity have centralized many of the computing tasks involved in many disciplines, simplifying the workflow for many hard-working people running heavy-duty graphics. For Brook, it gave him more ease of use and peace of mind to know he was connected through high-quality communications and broadband services, especially considering his profession takes him into tricky territory. A standard safety kit is another perk that made it ideal for Brook’s intended purpose.

2015 GMC Sierra 3500 Popular Interior Features

Improved, modern technology and user interface
Wi-Fi capability
Advanced smartphone connectivity
Advanced driver assistance and safety functions
High quality Bose sound system available

Another benefit for those who take their Sierra on long trips is the comfortable interior and available amenities. Large seats with leather upholstery and heated seats ushered in the modern era of interior comfort with style and quality. Adjustable seats and a steering wheel are standard across the board, and optional power adjustments meant you could choose the interior to suit your needs.

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500,000 Mile Sierra Owner Tells His Story

Brook Smith, a native of Southern Missouri, is a very interesting person with a lot of experience when it comes to large pickup trucks. His background includes high-performance racing and an engineering degree, both of which make him a reliable source of information on technical talk and performance metrics. His profession, which is what led to his high Sierra, involves transporting RVs and campers across North America.

As we explore this specialty, it becomes clear why Brook chose HD Sierra. Its reliability and power is rivaled only by its twin, the Chevy Silverado, which Brook owned and accumulated over 1,000,000 miles before purchasing the Sierra. His career has taken him to 49 states, including Alaska, and many Canadian states as well.

Suffice it to say, this gentleman has seen it all when it comes to the challenge of trucking and long distance shipping, especially when we consider the harsh conditions of the north. In fact, Brook describes his interactions with trucking on ice and high-altitude, high-volume hauling, and how the Chevy Silverado 3500 and GMC Sierra 3500 handle these situations like champs.

Brook Explains The Maintenance Requirements That Allow For Such Impressive Mileage

As we learned from the previous high-speed photos, the key to a long and healthy life is regular servicing as well as careful driving. However, Brook shares a nugget of wisdom that may shock many car and pickup owners, namely: read the owner’s manual. He explains how many mistakes were avoided due to knowing in advance specific areas about his car. This includes warning signs, troubleshooting advice, and detailed information on what owners are likely to encounter. Also, knowing your machine can easily increase your productivity and confidence, which Brook attributed to his mastery of rough terrain.

Important Factors In Taking Brook’s High Mileage

Scheduled maintenance
Engineering skills
Intelligent driving habits
Car maintenance
Car skills

Another factor contributing to Brook’s high mileage crammed into each pickup is the solid construction and solid components used in GM pickups. Brook admits to driving the Silverado more than 1 million miles on the original powertrain and transmission, only removing the engine to install the torque converter at about 600,000 miles. This is a great example of General Motors’ consistent design quality as well as Brook’s ability to identify problems, or areas of deficiency, and make updates in a meaningful and educated manner. This undoubtedly extended the life span of his pickups.

How an Engineering Degree Extended the Lifespan of the GMC Sierra

As previously mentioned, Brooks has an engineering degree, which allows him to better understand the inner workings of his car and understand how things work. This, in turn, allows him to solve it more effectively and without allowing small problems to cause big problems, which is a common phenomenon in car failures. Pair his engineering knowledge with the fact that he may be the only person on the face of the Earth to read an entire car owner’s manual, and you’ve got someone ready and willing to do the job without too much trouble.

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Effects of High Distance Vehicle

Most people are lucky if their car makes it to 250,000 miles without a catastrophic failure. And while it’s not uncommon, few people have the knowledge and resources to properly maintain a car to avoid such high-mileage breakdowns. That said, achieving that distance in one car while pushing the original powertrain is definitely cause for investigation, as automakers and owners alike have been curious as to how one can achieve this feat.

This encourages automakers to consider the steps and engineering that led to this impressive performance, as well as instill confidence in buyers looking to purchase a heavy-duty vehicle. Which leads to increased competition and design development, as seen in the current market as a whole.

Overall, the 2015 GMC Sierra 3500 is a strong and reliable pickup that, with careful ownership, will keep the truck going long after the lights go out. We see this fact in both of Brook Smith’s photos, with more than 1.5 million miles connected between them. With his high level of car maintenance, it wouldn’t be surprising to see Brook again in the future with more miles on the stable Sierra.