2026 GMC Sierra 2500 HD Transmission Fluids

Keep Your 2026 GMC Sierra 2500 HD in Top Shape with Quality Transmission Fluids

Whether you’re repairing or upgrading your Transmission Fluid, using high-quality parts is key to keeping your 2026 GMC Sierra 2500 HD looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Manual Transmission Fluids and Dual Clutch Transmission Fluids. Whether you’re replacing a damaged part or enhancing your truck’s style and protection, you’ll find exactly what you need to get the job done right.

Competitive Prices and Extensive Inventory

The average price for a 2026 GMC Sierra 2500 HD Transmission Fluid at Advance Auto Parts is around $21.32, with a range that starts at $12.49 and goes up to $38.99. With 2 options in stock from one trusted brand, finding the right fit is easy. Popular picks like Extended Protection 5W-30 Full Synthetic Motor Oil, Maximizes Engine Life, 5 Quart and High Performance Transmission & Differential Gear Oil: Conventional 75W-90, 1 Quart start at just $12.49 and offer a great balance of form and function.

Explore Related Parts

While you’re upgrading or replacing your Transmission Fluid, don’t forget to check out other key components like Fluids. At Advance Auto Parts, we’re here to help you keep your 2026 GMC Sierra 2500 HD in peak condition, inside and out.

Essential 2026 GMC Sierra 2500 HD Transmission Fluids

Mobil 1 – High Mileage 5W-30 Full Synthetic Motor Oil, Extends Engine Life, 1 Quart (Part No.14999)

High Mileage 5W-30 Full Synthetic Motor Oil, Extends Engine Life, 1 Quart

from

$11.99
Give your higher mileage engine the care it deserves with Mobil 1 High Mileage full-synthetic motor oil 0W-20. This formula utilizes Mobil 1’s signature Triple Action Formula to deliver outstanding engine performance, protection, and cleanliness to vehicles with over 75,000 miles. Mobil 1 High Mileage motor oil extends engine life by reducing friction and preventing deposits and sludge buildup – keeping critical engine parts clean and protected for up to 10,000 miles between oil changes.(1) Mobil 1 helps to keep your engine running at lower temperatures(2) and is proven to cool engine temperatures by over 10%.(3) Mobil 1 High Mileage full-synthetic motor oil 5W-30 also helps control oxidation to prevent oil breakdown and is recommended by ExxonMobil for all types of modern cars, SUVs, light vans, and light trucks – including those with high-performance, turbocharged, supercharged, multi-valve, or fuel-injected engines. Mobil 1 is America’s No. 1 selling synthetic motor oil brand at retail, (4) trusted and recommended by car builders and experienced mechanics, and is the Official Motor Oil of NASCAR®. ((1)Protects for up to 10,000 miles or 1 year, whichever comes first. To learn more about the Mobil 1 Limited Warranty, visit Mobil.US. (2)Compared to conventional oil. (3) Based on proprietary engine testing results may vary. (4) Source: The NPD Group/ Retail Tracking Service/ Dollar Sales/ PCMO full-synthetic/ 52 weeks ending September 30, 2023)

Product Features:
  • Mobil 1 High Mileage full-synthetic motor oil 5W-30 is designed for engines with over 75,000 miles to go up to 10,000 miles between oil changes (1)
  • Utilizes Mobil 1’s signature Triple Action Formula to deliver outstanding engine performance, protection, and cleanliness
  • Meets ILSAC GF-6 standards to help provide low-speed pre-ignition (LSPI) and timing chain wear protection while keeping your engine clean and helping to improve your fuel economy
  • Provides excellent internal engine heat protection (up to 500 degrees F) and low temperature protection (to -30 degrees F)
  • Helps extend engine life by working to prevent damaging deposits and sludge buildup
  • Manufacturer part number: 103767
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Valvoline – High Mileage 5W-30 Full Synthetic Engine Oil, Prevents Leaks (Part No.881169)

High Mileage 5W-30 Full Synthetic Engine Oil, Prevents Leaks

from

$36.99
Upgrading your motor oil to Valvoline Full Synthetic High Mileage with MaxLife Technology can help you increase the longevity of your car, truck or SUV with over 75,000 miles. It’s proven to protect your high-mileage motor against wear, friction, heat, and deposits – the leading causes of engine breakdown and expensive repairs. Our exclusive formulation goes beyond industry standards to protect your engine. It’s fortified with enhanced wear additives and friction-fighting agents to safeguard critical engine components, extra detergents to clean inside your engine, and premium seal conditioners to restore aging seals and prevent leaks. Superior viscosity modifiers and high-quality base oils help it perform exceptionally in both high and low temperatures. Engineered with ingenuity, tested with tenacity, and proven with purpose, our formula was innovated in America with a century and a half of hands-on experience from the original motor oil brand.

Product Features:
  • Enhanced maxlife technology prevents engine breakdown in extreme conditions with 50% better wear protection than the industry standard
  • Treat and prevent leaks with premium seal conditioners to keep oil out of places it shouldn’t be
  • 25% extra defense against deposits, sludge, corrosion and rust via interior-cleansing detergents
  • Extreme temperature protection through our high-quality base oils and superior viscosity modifiers
  • Meets or exceeds all requirements of ilsac gf-6a, api sp, api sn with sn plus, api sn
  • High Mileage Protection: Valvoline Full Synthetic High Mileage Engine Oil is specially designed to protect engines with over 75,000 miles against wear, friction, heat, and deposits, ensuring a longer lifespan for your vehicle.
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Pentosin – Automatic Transmission Fluid – 1 Liter and with High Performance (Part No.1058112)

Automatic Transmission Fluid - 1 Liter and with High Performance

from

$27.49
Automatic Transmission Fluid – 1 Liter and with High Performance

Royal Purple – HMX 5W-30 High Mileage Synthetic Oil, Restores Lost Performance, 1 Quart (Part No.11744)

HMX 5W-30 High Mileage Synthetic Oil, Restores Lost Performance, 1 Quart

from

$12.99
Royal Purple HMX SAE 5W-30 High-Mileage Synthetic Motor Oil, 1 quart is specifically designed to minimize wear and restore lost performance in engines with more than 75,000 miles. Formulated with robust zinc/phosphorus anti-wear compounds combined with Royal Purple’s proprietary additive technology Synerlec, HMX is chemically enhanced to revitalize hardened seals, reducing oil consumption common in high-mileage engines. In addition, HMX is fortified with stout detergents to remove engine build-up and deposits, maintain cleanliness and promote engine longevity.

Product Features:
  • Specifically designed to minimize wear and restore lost performance in engines with more than 75,000 miles
  • Formulated with robust zinc/phosphorus anti-wear compounds combined with royal purple’s proprietary additive technology
  • Hmx is chemically enhanced to revitalize hardened seals, reducing oil consumption common in high-mileage engines
  • Reduces friction and metal-to-metal contact for peak engine performance
  • Also provides outstanding oxidation resistance to safely extend oil drain intervals, and an ionic attraction to metal surfaces, providing protection and minimizing wear at start-up
  • High-Mileage Formula: Specifically designed for engines with more than 75,000 miles, this full synthetic engine oil helps minimize wear and restore lost performance.
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Pentosin – PENTOSIN ATF 6 1L (Part No.1058106)

PENTOSIN ATF 6 1L

from

$41.49
PENTOSIN ATF 6 1L

Valvoline – Daily Protection 5W-30 Synthetic Blend Motor Oil, Strong Fuel Efficiency, 5 Quart (Part No.881159)

Daily Protection 5W-30 Synthetic Blend Motor Oil, Strong Fuel Efficiency, 5 Quart

from

$29.99
Valvoline Daily Protection Motor Oil is specially formulated to exceed industry standards for wear, deposit and sludge protection to help keep engines running like new. Developed with high quality additives and premium base oils, it’s designed to flow easily at cold temperatures, reducing wear at startup and providing added protection against motor oil breakdown in tough conditions. For enhanced fuel efficiency, choose Daily Protection Synthetic Blend 5W-20 or 5W-30. Developed with low-friction technology to support strong fuel economy.

Product Features:
  • Extra wear protection designed to help keep automotive engine parts like new
  • Added detergents help protect against sludge and deposits
  • High quality additives resist motor oil breakdown in tough conditions
  • Low-friction formula supports strong fuel efficiency
  • Premium formulation flows easily at low temperatures reducing wear at start-up
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Valvoline – MaxLife 5W-30 Synthetic Blend Motor Oil, Prevents Engine Breakdown, 5 Quart (Part No.782256)

MaxLife 5W-30 Synthetic Blend Motor Oil, Prevents Engine Breakdown, 5 Quart

from

$31.99
75,000 miles is more than a mile marker. It’s a signal that your engine is ready for greater protection. That’s when you need Valvoline High Mileage with MaxLife Technology Motor Oil. Its exclusive formula is proven to maximize engine life in cars, trucks, and SUVs with over 75,000 miles. Our mixture is specially developed with a unique combination of synthetic and premium conventional oils to protect your high-mileage motor against wear, friction, heat, and deposits – the four major causes of engine breakdown and expensive repairs. Anti-wear additives defend critical engine components, advanced friction-fighting agents reduce heat and abrasion, added detergents clean the inside of your engine, and premium seal conditioners handle aging seals to prevent leaks. It fights sludge, corrosion and rust that can rob your engine of horsepower, fuel efficiency and longevity. From extreme temperatures and cold starts to stop-and-go traffic and frequent short trips, viscosity modifiers make sure the oil flows more easily, coats more completely, and resists thermal breakdown under even the most intense driving conditions. Its unique mixture curbs contaminants to keep high-mileage engines from burning and consuming oil that can foul spark plugs, creating higher emissions and causing your motor to run roughly.

Product Features:
  • MAXLIFE TECHNOLOGY PREVENTS engine breakdown with 40% better wear protection than the industry standard
  • REFRESH AGING SEALS AND PREVENT LEAKS with seal conditioners
  • REDUCE SLUDGE, DEPOSITS, CORROSION, AND RUST with added detergents – keep motors clean inside
  • ENHANCED FRICTION PERFORMANCE HELPS MAXIMIZE POWER with advanced friction-fighting agents
  • MEETS OR EXCEEDS ALL REQUIREMENTS of ILSAC GF-6A, API SP, API SN with SN PLUS, API SN
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Mobil 1 – Extended Performance 5W-30 Full Synthetic Motor Oil, Protects Up to 20,000 Miles, 1 Quart (Part No.14976)

Extended Performance 5W-30 Full Synthetic Motor Oil, Protects Up to 20,000 Miles, 1 Quart

from

$12.99
If you trust your vehicle to be there for you, you need to be there for its engine, with Mobil 1 Extended Performance full-synthetic motor oil 5W-30. Our ultimate full-synthetic motor oil meets or exceeds the industry’s toughest standards to help you get the most from your engine for up to 20,000 miles between oil changes, guaranteed.(1) Mobil 1 Extended Performance utilizes Mobil 1’s Triple Action+ Formula to combine outstanding engine performance, protection, and cleanliness with the added benefit of maximized engine power. This cutting-edge formula is recommended by ExxonMobil for all types of modern vehicles, including high-performance, turbo-charged, and supercharged gasoline and diesel multi-valve fuel-injected engines found in passenger cars, SUVs, light vans, and light trucks. Mobil 1 is America’s No. 1 synthetic motor oil brand at retail,(2) trusted and recommended by car builders and experienced mechanics, and is the Official Motor Oil of NASCAR®. ((1)Protects for up to 20,000 miles or 1 year, whichever comes first. To learn more about the Mobil 1 Limited Warranty, visit Mobil.US. (3)Source: The NPD Group/ Retail Tracking Service/ Dollar Sales/ PCMO full-synthetic/ 52 weeks ending Feb 25, 2023)

Product Features:
  • Mobil 1 Extended Performance full-synthetic motor oil 5W-30 helps protect critical engine parts for up to 20,000 miles between oil changes, (1) controlling oxidation to prevent oil breakdown and maintaining excellent viscosity.
  • Utilizes Mobil 1’s Triple Action+ Formula to combine outstanding engine performance, protection, and cleanliness with the added benefit of power
  • Meets ILSAC GF-6 standards to help provide low-speed pre-ignition (LSPI) and timing chain wear protection while keeping your engine clean and helping to improve your fuel economy
  • Helps extend engine life by working to prevent damaging deposits and sludge buildup
  • Provides excellent internal engine heat protection (up to 500 degrees F) and low temperature protection (to -40 degrees F)
  • Manufacturer Part Number: 112627
  • Versatile Compatibility: Recommended for all types of modern vehicles, including high-performance, turbo-charged, and supercharged gasoline and diesel multi-valve fuel-injected engines found in passenger cars, SUVs, light vans, and light trucks.
  • Trusted Brand: Mobil 1 is America’s No. 1 synthetic motor oil brand at retail, trusted and recommended by car builders and experienced mechanics, and is the Official Motor Oil of NASCAR«.
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Valvoline – Extended Protection 5W-30 Full Synthetic Motor Oil, Maximizes Engine Life, 5 Quart (Part No.899391)

Extended Protection 5W-30 Full Synthetic Motor Oil, Maximizes Engine Life, 5 Quart

from

$38.99
Introducing the ultimate protection for vehicles with more than 75,000 miles: Valvoline Extended Protection Full Synthetic High Mileage Motor Oil with Ultra MaxLife Technology. Engineered to maximize engine life, it’s 10x stronger against oil breakdown and provides 50% better wear protection than industry standards. The new formulation combines Valvoline’s premium full synthetic with Ultra MaxLife Technology featuring seal conditioners to rejuvenate aging seals and prevent oil leaks. The result is our best performing motor oil ever for high mileage vehicles. It helps prevent engine breakdown in extreme operating conditions and is proven to protect high-mileage motors against wear, friction, heat, and deposits – the leading causes of expensive repairs. After 75,000 miles, your engine is ready for greater protection. Upgrade to Valvoline Extended Protection Full Synthetic High Mileage with Ultra MaxLife Technology and keep your car on the road for years to come.

Product Features:
  • Our best performing high-mileage engine oil is formulated with ultra maxlife technology, the ultimate protection for vehicles with more than 75,000 miles
  • Valvoline extended protection full synthetic high mileage engine oil is designed with premium seal conditioners to treat and prevent oil leaks
  • 10x stronger against oil breakdown and 50% greater wear protection than industry standards
  • Enhanced wear additives and friction-fighting agents to safeguard critical engine components
  • Maximizes engine life: Valvoline Extended Protection Full Synthetic High Mileage Engine Oil is engineered to maximize engine life, providing superior wear protection and preventing expensive repairs.
  • Ultra MaxLife Technology: The new formulation combines Valvoline’s premium full synthetic with Ultra MaxLife Technology featuring seal conditioners to rejuvenate aging seals and prevent oil leaks.
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Pentosin – PENTOSIN ATF 44 5L (Part No.1058212)

PENTOSIN ATF 44 5L

from

$85.99
PENTOSIN ATF 44 5L

Royal Purple – High Performance 5W-30 Synthetic Motor Oil, Better Wear Protection, 1 Quart (Part No.01530)

High Performance 5W-30 Synthetic Motor Oil, Better Wear Protection, 1 Quart

from

$11.99
High Performance Motor Oil API LICENSED MOTOR OIL Royal Purple High Performance Motor Oil combines premium base oils with proprietary additive technologies to create a high performance synthetic engine oil that optimizes performance and protection. Royal Purple High Performance Motor Oils carry the current API and ILSAC engine oil licenses, as well as the GM dexos1 gasoline engine oil approval. ILSAC GF-6 AND GM DEXOS1 Modern gasoline direct injection (GDI) engines have achieved levels of power and fuel economy never before possible in passenger car engines. As a result, smaller engines operate at much higher loads across all engine speeds. This has caused increased wear in critical areas of the engine, and created a destructive phenomenon called low-speed pre-ignition (LSPI). The unique, state-of-the-art additive technology in Royal Purple High Performance engine oils is designed specifically to address these issues, and help engines maintain performance and reliability.

Product Features:
  • Better Wear Protection
  • Increased Protection against Low Speed Pre-Ignition
  • Increased Fuel Efficiency
  • Better Protection for Vehicle Exhaust Emissions Equipment
  • Improved Compatibility with Fuels Containing Ethanol
  • Superior Corrosion Protection
  • Made in USA
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Valvoline – High Performance Transmission & Differential Gear Oil: Conventional 75W-90, 1 Quart (Part No.VV820)

High Performance Transmission & Differential Gear Oil: Conventional 75W-90, 1 Quart

from

$12.49
Valvoline High Performance Synthetic Gear Oil is the thermally stabile extreme pressure lubricant that offers outstanding protection for gearboxes and differentials in passenger cars, light trucks, and sport utility vehicles. Combined with high quality synthetic base oils, our formula’s superior additives help reliably safeguard against severe temperatures, shock loads, foaming, scuffing, scouring, corrosion and pitting in high load, high torque and high horsepower conditions. Can be used in conventional and limited slip hypoid differentials where GL-5 is specified as well as non-synchronized manual transmissions that require GL-4. Protect your gears with Valvoline, the #1 gear oil brand.

Product Features:
  • HIGH PERFORMANCE EXTREME-PRESSURE ADDITIVES HELP MINIMIZE WEAR in high pressure and high temperature conditions
  • EXCEPTIONAL HIGH AND LOW TEMPERATURE PROTECTION can easily handle both winter and summer conditions for dependable coverage and protection year-round
  • REDUCES CHATTERING AND PROTECTS GEAR TEETH from oxidation, rust, and wear
  • FIGHTS CORROSION AND RUST with emulsifying agents and safeguards against impurities, oxidation and thermal breakdown
  • SUPERIOR ADDITIVES help reliably safeguard against severe temperatures, shock loads, foaming, scuffing, scouring, corrosion and pitting in high load, high torque and high horsepower conditions
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Most Popular Manual Transmission Fluid for 2026 GMC Sierra 2500 HDs

Enhance your 2026 GMC Sierra 2500 HD with this popular Manual Transmission Fluid we have in stock, for $38.99.

Valvoline – Extended Protection 5W-30 Full Synthetic Motor Oil, Maximizes Engine Life, 5 Quart (Part No.899391)

Extended Protection 5W-30 Full Synthetic Motor Oil, Maximizes Engine Life, 5 Quart

from

$38.99
Introducing the ultimate protection for vehicles with more than 75,000 miles: Valvoline Extended Protection Full Synthetic High Mileage Motor Oil with Ultra MaxLife Technology. Engineered to maximize engine life, it’s 10x stronger against oil breakdown and provides 50% better wear protection than industry standards. The new formulation combines Valvoline’s premium full synthetic with Ultra MaxLife Technology featuring seal conditioners to rejuvenate aging seals and prevent oil leaks. The result is our best performing motor oil ever for high mileage vehicles. It helps prevent engine breakdown in extreme operating conditions and is proven to protect high-mileage motors against wear, friction, heat, and deposits – the leading causes of expensive repairs. After 75,000 miles, your engine is ready for greater protection. Upgrade to Valvoline Extended Protection Full Synthetic High Mileage with Ultra MaxLife Technology and keep your car on the road for years to come.

Product Features:
  • Our best performing high-mileage engine oil is formulated with ultra maxlife technology, the ultimate protection for vehicles with more than 75,000 miles
  • Valvoline extended protection full synthetic high mileage engine oil is designed with premium seal conditioners to treat and prevent oil leaks
  • 10x stronger against oil breakdown and 50% greater wear protection than industry standards
  • Enhanced wear additives and friction-fighting agents to safeguard critical engine components
  • Maximizes engine life: Valvoline Extended Protection Full Synthetic High Mileage Engine Oil is engineered to maximize engine life, providing superior wear protection and preventing expensive repairs.
  • Ultra MaxLife Technology: The new formulation combines Valvoline’s premium full synthetic with Ultra MaxLife Technology featuring seal conditioners to rejuvenate aging seals and prevent oil leaks.
See More

Best-Selling 2026 GMC Sierra 2500 HD Dual Clutch Transmission Fluid

Upgrade your Sierra 2500 HD with our best-selling Dual Clutch Transmission Fluid.

Valvoline – High Performance Transmission & Differential Gear Oil: Conventional 75W-90, 1 Quart (Part No.VV820)

High Performance Transmission & Differential Gear Oil: Conventional 75W-90, 1 Quart

from

$12.49
Valvoline High Performance Synthetic Gear Oil is the thermally stabile extreme pressure lubricant that offers outstanding protection for gearboxes and differentials in passenger cars, light trucks, and sport utility vehicles. Combined with high quality synthetic base oils, our formula’s superior additives help reliably safeguard against severe temperatures, shock loads, foaming, scuffing, scouring, corrosion and pitting in high load, high torque and high horsepower conditions. Can be used in conventional and limited slip hypoid differentials where GL-5 is specified as well as non-synchronized manual transmissions that require GL-4. Protect your gears with Valvoline, the #1 gear oil brand.

Product Features:
  • HIGH PERFORMANCE EXTREME-PRESSURE ADDITIVES HELP MINIMIZE WEAR in high pressure and high temperature conditions
  • EXCEPTIONAL HIGH AND LOW TEMPERATURE PROTECTION can easily handle both winter and summer conditions for dependable coverage and protection year-round
  • REDUCES CHATTERING AND PROTECTS GEAR TEETH from oxidation, rust, and wear
  • FIGHTS CORROSION AND RUST with emulsifying agents and safeguards against impurities, oxidation and thermal breakdown
  • SUPERIOR ADDITIVES help reliably safeguard against severe temperatures, shock loads, foaming, scuffing, scouring, corrosion and pitting in high load, high torque and high horsepower conditions
See More

FAQs for 2026 GMC Sierra 2500 HD Transmission Fluids

What are the best-selling Transmission Fluids for 2026 GMC Sierra 2500 HDs?

Out of 2 Transmission Fluids that fit 2026 GMC Sierra 2500 HDs, the following parts are the top sellers:

What’s the price range for 2026 GMC Sierra 2500 HD Transmission Fluids?

The prices of Transmission Fluids for the 2026 GMC Sierra 2500 HD range from $12.49 up to $38.99 for the most premium parts.

What is the average price of a Transmission Fluid for a 2026 GMC Sierra 2500 HD?

The average price for Transmission Fluids for the 2026 GMC Sierra 2500 HD is $21.32. Keep in mind the variety of part types within our Transmission Fluid category, where you are likely to find a wide range of prices across a variety of parts and components.

Does Advance Auto Parts sell Transmission Fluids for other GMC Sierra 2500 HD model years?

Yes, we carry Transmission Fluids for 24 model years of GMC Sierra 2500 HDs between 2001 and 2025. The following model years are the most popular for Transmission Fluid purchases: 2023, 2022, 2024, 2021, 2020, 2019, 2018, 2017, and 2016.

What are the cheapest Transmission Fluids for my 2026 GMC Sierra 2500 HD?

The cheapest 2026 GMC Sierra 2500 HD Transmission Fluids we carry are:

Does Advance Auto Parts sell Transmission Fluids for any other 2026 GMC models?

Yes. We stock Transmission Fluids for 3 other popular 2026 GMC models. Some of the most popular are 2026 Canyon Transmission Fluids, 2026 Sierra 1500 Transmission Fluids, 2026 Sierra 3500 HD Transmission Fluids, and 2026 Terrain Transmission Fluids.

What types of Transmission Fluids do you sell for my 2026 GMC Sierra 2500 HD?

As of 11/2/25, these are some of the most in-demand types of Transmission Fluids for a 2026 GMC Sierra 2500 HD:

Can I get help with 2026 GMC Sierra 2500 HD Transmission Fluid orders?

Contact our customer support team by chat or phone, through the help desk page, where you can find instant answers about GMC Transmission Fluids and more.

What is your return policy for GMC Sierra 2500 HD Transmission Fluids?

Advance Auto Parts keeps returns simple. For new GMC Sierra 2500 HD Transmission Fluids and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.