2015 GMC Sierra 2500 HD Differentials

Keep Your 2015 GMC Sierra 2500 HD in Top Shape with Quality Differentials

Whether you’re repairing or upgrading your Differential, using high-quality parts is key to keeping your 2015 GMC Sierra 2500 HD looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Differential Covers, Differential Oil, and Rear Differential Cover Gaskets. 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.

Top-Rated Differentials from Trusted Brands

Looking for a reliable Differential? We’ve got you covered with options from brands you know and trust like FELPRO, National, and Dorman. For example, FELPRO Differentials start at just $8.29 with an average 4.6 star rating. National and Dorman offer similar pricing and quality, backed by strong customer feedback. With over 5,125 reviews and a solid 5 star average, you can shop with confidence knowing other GMC Sierra 2500 HD owners approve.

Competitive Prices and Extensive Inventory

The average price for a 2015 GMC Sierra 2500 HD Differential at Advance Auto Parts is around $444.69, with a range that starts at $5.99 and goes up to $3,169.99. With 159 options in stock from 12 trusted brands, finding the right fit is easy. Popular picks like DEXRON – VI ATF Full Synthetic Automatic Transmission Fluid, 1 Quart, Flex Fill Transmission & Differential Gear Oil: Full Synthetic 75W-90, 1 Quart, and Axle Housing Cover Gasket: Irregular Shaped 14 Bolt Hole Gasket start at just $8.29 and offer a great balance of form and function.

Explore Related Parts

While you’re upgrading or replacing your Differential, don’t forget to check out other key components like 4WD Components and Universal Joints. At Advance Auto Parts, we’re here to help you keep your 2015 GMC Sierra 2500 HD in peak condition, inside and out.

Essential 2015 GMC Sierra 2500 HD Differentials

Yukon Gear – Dura Grip For GM & Chrysler 11.5", 30 Spline (Part No.26033)

Dura Grip For GM & Chrysler 11.5", 30 Spline

from

$1485.00
The Yukon Dura Grip provides aggressive yet smooth traction to give you the confidence & performance you need. Get longer life and better traction with the heavy duty Yukon Dura Grip Positraction. The Yukon Dura Grip uses a nodular case and forged 4320 internals for added strength along with composite clutches for high performance and long life. All units are Rebuildable and many offer upgrades to increase aggressiveness for racing applications. Each unit carries a one year warranty against defects.

Product Features:
  • Fits GM and Chrysler 11.5″ with 30 spline axles
  • Clutch style positraction
  • Smooth design
  • Internal gears are manufactured using forged 4320 steel and cut to provide stronger teeth
  • Fully rebuildable
  • Assembled in the USA
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LuK – Differential Repair Kit (Part No.GDK324B)

Differential Repair Kit

from

$528.99
Product Features:
  • Each LuK GearBOX contains all the OE quality bearings needed for a professional transmission repair
  • LuK Differential Bearing Kits are designed to meet or exceed OEM requirements. This will ensure customer satisfaction.
  • LuK Differential Bearing Kits contain the bearings and seals needed to complete the job.
  • LuK Differential Bearing Kits include wear parts such as seals, O-rings, shaft sealing rings, support bearings and spare parts where necessary for eliminating the specific cause of failure.
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Yukon Gear – Standard Open Spider Gear Kit For GM 10.5" And 14T With 30 Spline Axles (Part No.16044)

Standard Open Spider Gear Kit For GM 10.5" And 14T With 30 Spline Axles

from

$315.99
Yukon standard open spider gear kit for GM 10.5″ and 14T with 30 spline axles. Yukon uses higher quality materials and better techniques than OEM to ensure a longer lasting spider gear set. All components come with a one year warranty against manufacturing defects.

Product Features:
  • Spider gear kit
  • Fits GM 10.5″ 14 bolt truck open differential
  • Includes two side gears, four pinion gears, cross pin shaft, cross pin bolt and spider gear thrust washers.
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Yukon Gear – Pinion Install Kit For ’99 & Newer 10.5" GM 14 Bolt Truck Differential (Part No.13106)

Pinion Install Kit For '99 & Newer 10.5" GM 14 Bolt Truck Differential

from

$449.99
Yukon Pinion installation kits are a terrific solution for gear installation on lower mileage vehicles where the carrier bearings & races can be reused. This kit uses Timken bearings and races along with a high quality pinion seal and small parts. Included in this kit are the pinion bearings and races, pilot bearing (if applicable), crush sleeve (if applicable), complete pinion shim kit, thread locker, and marking compound with brush. Yukon does extensive research for each application to make sure your kit will arrive with all the correct parts you need to install your pinion gear.

Product Features:
  • Fits 1998 and up GM 10.5″ 14 bolt truck
  • Included are pinion bearings and races, pinion seal, crush sleeve, complete pinion shim kit, and marking compound with brush.
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National – Multi-Purpose Bearing (Part No.A-42)

Multi-Purpose Bearing

from

$41.99
Product Features:
  • CONSISTENT PERFORMANCE: Matched cup and cone components ensure consistent performance
  • PREMIUM MATERIALS: Precision manufactured using premium-grade steel for outstanding durability and performance
  • SMOOTH ROTATION: Crowned raceways and rollers for even load distribution
  • OE-STYLE DESIGN: Engineered to meet OE specifications
  • COMPREHENSIVE COVERAGE: Industry-leading coverage for domestic and import applications
  • RIGOROUS TESTING: Comprehensive testing throughout design and development processes by National engineers for quality you can count on
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Yukon Gear – Differential Cover B (Part No.33569)

Differential Cover B

from

$5.99
Differential Cover B

Yukon Gear – 11.5" GM & Chrysler Pinion Nut (Part No.33151)

11.5" GM & Chrysler Pinion Nut

from

$37.99
Product Features:
  • Pinion nut for GM and Chrysler 11.5″
  • 12 point 36mm socket
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Spartan – Drive Axle Assembly; GM 2500 P/U Posi Axle (Part No.RAXP0220A)

Drive Axle Assembly; GM 2500 P/U Posi Axle

from

$2332.99
Remanufactured Rear Axle assemblies are completely disassembled, thoroughly cleaned and reassembled using new wear parts. Units are assembled, sealed & include backing plates, axle shafts & fluid.

Product Features:
  • Rear axles are assembled with backing plates & axle shafts, and filled with fluid prior to shipping
  • Axles are fully painted & shipped securely in environmentally safe and recyclable containers that are the perfect size for returning your original core
  • Our complete Rear axle assemblies mean you just hang brakes, connect suspension & go! Your installation will be simple and trouble free
  • Remember to match axle ratio to original. For 4WD rear axle must match front axle ratio
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Powertrax – No-Slip Traction System (Part No.9207053000)

No-Slip Traction System

from

$591.99
For vehicles that are driven daily, the Powertrax No-Slip Traction System is the latest design in quiet traction-adding differential technology. It combines the automatic street-friendly smooth operation of a limited-slip differential with the traction performance of a locking differential. The Powertrax No-Slip locker easily installs in to your differential carrier using basic tools and without affecting your ring and pinion settings. Powertrax Grip-Lok, Lock-Right Lockers and No-Slip Traction Systems automatically provide 100% traction on-demand, under the toughest circumstances. The Powertrax Grip-Pro and Grip-LS performance limited slips offer smooth dependable torque transfer and traction for the best of both worlds!The Powertrax® Lock-Right Locker provides outstanding traction for off-road machines and race vehicles. Powertrax No-Slip Traction Systems deliver excellent performance to street-driven cars and trucks.
  • Powertrax® lockers range from the original, Lock-Right for serious straight-line performance, to the No-Slip traction system for street-able vehicles.
  • Powertrax® offers three levels of GRIP locking differentials, ranging from the clutch-type GRIP LS with a forged steel case, the gear-driven GRIP PRO and finally the GRIP LOK for extreme traction.
  • Powertrax® = Extreme Traction Systems!
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    Yukon Gear – Bearing Race Driver (Part No.56013)

    Bearing Race Driver

    from

    $215.99
    Bearing race driver. No return.

    Product Features:
    • Bearing race driver
    • Fits HM807010 race
    • All steel construction
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    USA Standard Gear – Ring & Pinion "Thick" Gear Set For 10.5" GM 14 Bolt Truck In A 4.56 Ratio (Part No.36185)

    Ring & Pinion "Thick" Gear Set For 10.5" GM 14 Bolt Truck In A 4.56 Ratio

    from

    $389.99
    USA Standard ring & pinion sets are the right choice to add confidence to your install. USA Standard Gear offers a full line of ring & pinion sets for a variety of common & hard to find applications. USA standard gear offers a standard one year warranty against defects on their ring & pinion sets.

    Product Features:
    • Fits GM 10.5″ GM 14 bolt truck
    • 10.50″ ring gear diameter
    • 30 spline pinion
    • 12 ring gear bolts
    • 4.56 ratio
    • Thick gear for 4.10 and down carrier
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    Yukon Gear – Redline Synthetic "Shock Proof" Oil With Positraction Additive – 4 Quarts (Part No.15005)

    Redline Synthetic "Shock Proof" Oil With Positraction Additive - 4 Quarts

    from

    $148.99
    Redline Synthetic “Shock Proof” Oil with positraction Additive. 4 Quarts.

    Product Features:
    • Includes four quarts of Redline Shockproof oil and one 4oz bottle of Yukon positraction additive
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    Yukon Gear – Positraction Internals For 9.5" GM With 33 Spline Axles (Part No.16057)

    Positraction Internals For 9.5" GM With 33 Spline Axles

    from

    $606.99
    Yukon positraction internals for 9.5″ GM with 33 spline axles. Yukon uses higher quality materials and better techniques than OEM to ensure a longer lasting spider gear set. This kit does not include clutches. All components come with a one year warranty against manufacturing defects. These internals are for Eaton positractions only. They will not fit factory positractions.

    Product Features:
    • Spider gear kit
    • Fits GM 9.5″ with Eaton positraction
    • Includes two side gears, four pinion gears, cross pin shaft, roll pin and spider gear thrust washers.
    See More

    Yukon Gear – GM 10.5′ 14 Bolt Truck Cover Gasket (Part No.23016)

    GM 10.5' 14 Bolt Truck Cover Gasket

    from

    $13.99
    14T cover gasket.

    Product Features:
    • Cover gasket
    • Fits GM 10.5″ 14 bolt truck
    See More

    Yukon Gear – DiffrlPinSupportBolt (Part No.33582)

    DiffrlPinSupportBolt

    from

    $5.99
    DiffrlPinSupportBolt

    Yukon Gear – Eaton Positraction Shim Kit For 10.5" GM 14 Bolt Truck (Part No.16113)

    Eaton Positraction Shim Kit For 10.5" GM 14 Bolt Truck

    from

    $78.99
    Eaton positraction shim kit for GM 14T.

    Product Features:
    • Shim kit
    • Fits GM 10.5″ 14 bolt truck Eaton positraction
    See More

    National – Tapered Roller Bearing Cone (Part No.HM903249)

    Tapered Roller Bearing Cone

    from

    $40.99
    Manufactured with premium-grade steel, National taper bearing cones feature crowned raceways and rollers to ensure even load distribution.

    Product Features:
    • PREMIUM MATERIALS – Precision manufactured using premium-grade steel for outstanding durability and performance
    • SMOOTH ROTATION – Crowned raceways and rollers for even load distribution
    • OE-STYLE DESIGN – Engineered to meet OE specifications
    • COMPREHENSIVE COVERAGE – Industry-leading coverage for domestic and import applications
    • RIGOROUS TESTING – Comprehensive testing throughout design and development processes by National engineers for quality you can count on
    See More

    Yukon Gear – Yoke For GM 11.5", 1410 U/Joint Size With Balancer (Part No.41072)

    Yoke For GM 11.5", 1410 U/Joint Size With Balancer

    from

    $319.99
    Yukon yoke for GM 11.5″ with a 1410 U/joint size. 4.188″ snap ring span, 1.188″ cap diameter. Outside snap ring. All Yukon yokes come with a one year warranty against manufacturing defects.

    Product Features:
    • Fits GM 11.5″
    • 30 spline
    • 1410 u-joint size
    • Outside snap ring design
    • 4.188″ snap ring span
    • 1.188″ cap diameter
    • Strap style
    See More

    Yukon Gear – Full-Floating, Blank 35 Spline Diameter, Non-Drilled Axle Shaft For Dana 60 (Part No.21005)

    Full-Floating, Blank 35 Spline Diameter, Non-Drilled Axle Shaft For Dana 60

    from

    $232.99
    Full-floating, 35 spline diameter, non-drilled blank axle shaft for Dana 60. 40″ inches long. Yukon 1541H alloy axles offer a strength increase over stock while retaining a low cost. Yukon 1541H axles come with a one year warranty against manufacturing defects.
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    Felpro – Axle Housing Cover Gasket Irregular Shaped 14 Bolt Hole Gasket (Part No.RDS 55486)

    Axle Housing Cover Gasket Irregular Shaped 14 Bolt Hole Gasket

    from

    $16.99
    Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust.

    Product Features:
    • Meets or exceeds all original equipment specifications
    • Application specific design to ensure a perfect fit
    • Unsurpassed quality you can trust
    • Validated for fit, form and function
    • Each Fel-Pro gasket, no matter how small, is engineered to exacting standards with proprietary design, engineering and manufacturing processes
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    Motive Gear – Differential Pinion Shim Kit (Part No.1102)

    Differential Pinion Shim Kit

    from

    $9.99


    Product Features:
    • KIT SHIM PINION
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    National – Bearing Race (Part No.382A)

    Bearing Race

    from

    $10.99
    Manufactured with premium-grade steel, National taper bearing cups feature crowned raceways to ensure even load distribution.

    Product Features:
    • PREMIUM MATERIALS – Precision manufactured using premium-grade steel for outstanding durability and performance
    • SMOOTH ROTATION – Crowned raceways for even load distribution
    • OE-STYLE DESIGN – Engineered to meet OE specifications
    • COMPREHENSIVE COVERAGE – Industry-leading coverage for domestic and import applications
    • RIGOROUS TESTING – Comprehensive testing throughout design and development processes by National engineers for quality you can count on
    See More

    Yukon Gear – Standard Open Carrier Case & Spiders, GM 11.5" (Part No.20094)

    Standard Open Carrier Case & Spiders, GM 11.5"

    from

    $779.99
    11.5″ GM standard Open case, loeaded.

    Product Features:
    • Standard open carrier case and spiders
    • Fits GM and Chrysler 11.5″
    See More

    Yukon Gear – GM 9.5" Ring Gear Bolt (Part No.33047)

    GM 9.5" Ring Gear Bolt

    from

    $12.99
    GM 9.5″ ring gear bolt. 12mm x 1.5.

    Product Features:
    • Ring gear bolt for GM 9.2″
    • 12mm x 1.5
    See More

    Yukon Gear – Standard Open Cross Pin Bolt Lock Ring For 11.5" GM (Part No.33408)

    Standard Open Cross Pin Bolt Lock Ring For 11.5" GM

    from

    $16.99
    Standard Open cross pin bolt lock ring for 11.5″ GM.

    Product Features:
    • Cross pin bolt lock ring
    • Fits GM 11.5″
    See More

    aFe POWER – Differential Cover (Part No.46-70372)

    Differential Cover

    from

    $558.99
    aFe Power’s new rear differential cover brings performance engineering to the protection of your axle’s differential. This differential cover is constructed out of durable A356-T6 cast aluminum with reinforcing ribs for maximum strength. Mounting hardware is included for a hassle-free installation. An oil level sight glass and calibration plug set to the factory level prevents overfilling of the differential. A magnetic drain plug and a deep reach magnetic fill plug are provided for maximum protection. This cover is finished in black powder-coating with machined fins for a distinctive look. 4 Quart Gear Oil Capacity: This cover has about a 4 quart gear oil capacity at the factory fill level, factory cover holds about 3 quarts. Built-in External Fins: Built-in external fins transfer heat from the fluid to the outside air for maximum cooling. Magnetic Drain/Fill Plug: This system incorporates a magnetic drain and deep reach fill plug that captures loose particles for maximum rear-end protection. Oil Level Sight Glass: Large oil level sight glass with 1/8” NPT calibration plug set to the factory fluid level to eliminate overfilling. When it comes to engineering for power, performance, protection and value, aFe Power is the only choice.

    Product Features:
    • Constructed of Durable A356 Die Cast Aluminum
    • Reinforcing Ribs and Black Powder coating w/Machined Fins
    • Magnetic Drain and Fill Plugs Capture Loose Particles
    • Large Oil Level Sight Glass w/ Calibration Plug
    See More

    Yukon Gear – 10.5" GM 14 Bolt Truck Crush Sleeve (Part No.33100)

    10.5" GM 14 Bolt Truck Crush Sleeve

    from

    $12.99
    10.5″ GM 14 bolt truck crush sleeve, 1989 & newer. Approx 0.920″ long.

    Product Features:
    • Crush sleeve for 1989 and up GM 10.5″ 14 bolt truck
    • 0.920″ tall
    See More

    Yukon Gear – 11.5" GM Standard Open Pinion Gear Thrust Washer (Part No.33388)

    11.5" GM Standard Open Pinion Gear Thrust Washer

    from

    $15.99
    11.5″ GM standard Open pinion gear Thrust washer.

    Product Features:
    • Pinion gear thrust washer
    • Fits GM 11.5″
    See More

    Most Popular Differential Covers for 2015 GMC Sierra 2500 HDs

    Enhance your 2015 GMC Sierra 2500 HD with one of the 7 Differential Covers we have in stock, starting at just $46.99.

    Dorman – Differential Cover (Part No.697-703)

    Differential Cover

    from

    $46.99
    This direct replacement differential cover matches the fit and function of the original equipment diff cover for a reliable, leak-free repair. It features a durable design, made to strict specifications, to help ensure reliable service life.

    Product Features:
    • Direct replacement – this differential cover matches the fit and function of the original equipment diff cover on select vehicles
    • Reliable repair – the smart solution for fixing an existing cover that’s rusted, damaged or leaking differential fluid
    • Durable construction – this differential cover is made according to strict engineering standards to help ensure dependability
    • Trustworthy quality – backed by a team of product experts in the United States and more than a century of automotive experience
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    Yukon Gear – Steel Cover For Chrysler & GM 11.5", With O Fill Plug (Part No.32330)

    Steel Cover For Chrysler & GM 11.5", With O Fill Plug

    from

    $146.99
    Product Features:
    • Fits GM and Chrysler 11.5″
    • Steel
    See More

    Yukon Gear – Finned Aluminum Cover For Dodge & GM 11.5" Aam Rear Axle (Part No.32346)

    Finned Aluminum Cover For Dodge & GM 11.5" Aam Rear Axle

    from

    $389.99
    Product Features:
    • Fits Chrysler and GM 11.5″
    • Finned aluminum
    See More

    Yukon Gear – Steel Cover For GM 10.5" 14 Bolt Truck (Part No.32345)

    Steel Cover For GM 10.5" 14 Bolt Truck

    from

    $92.99
    Product Features:
    • Fits GM 10.5″ 14 bolt truck
    • Steel
    See More

    Yukon Gear – Chrome Cover For 10.5" GM 14 Bolt Truck (Part No.32013)

    Chrome Cover For 10.5" GM 14 Bolt Truck

    from

    $59.99
    Chrome cover for GM 14T.

    Product Features:
    • Fits GM 10.5″ 14 bolt truck
    • Chrome
    See More

    aFe POWER – Differential Cover (Part No.46-71050B)

    Differential Cover

    from

    $558.99
    aFe Power’s new front differential cover brings performance engineering to the protection of your axle’s differential. This differential cover is constructed out of durable cast aluminum with reinforced ribs for maximum strength. This cover comes with all necessary hardware for easy installation. Pro Series differential covers include an oil level sight glass and magnetic deep reach fill plug. This cover is finished with black powder-coating and machined fins for a distinctive look. Increased Oil Capacity: This cover has an increased oil capacity over stock for better performance over a longer duration. Built-in Internal/External Fins: Built-in internal and external fins transfer heat from the oil to the outside air for maximum cooling. Magnetic Plugs: This system incorporates a magnetic drain and deep reach fill plug to capture loose particles for maximum protection. Calibration Plug: Calibration plug set to the factory oil level to eliminate overfilling. Oil Level Sight Glass: A pre-installed oil level sight glass allows quick and easy oil inspection. When it comes to engineering for power, performance, protection and value, aFe Power is the only choice.

    Product Features:
    • Durable Cast Aluminum
    • Magnetic Drain and Fill Plugs Capture Loose Particles
    • Calibration Plug Set to Factory Fill Level Eliminates Overfilling
    • Oil Level Sight Glass for Quick/Easy Inspection
    See More

    aFe POWER – Differential Cover (Part No.46-71050A)

    Differential Cover

    from

    $296.99
    aFe Power’s new front differential cover brings performance engineering to the protection of your axle’s differential. This differential cover is constructed out of durable cast aluminum with reinforced ribs and machined fins for maximum strength and styling. This cover comes with all necessary hardware for easy installation. This cover has about a 2 quart lube capacity at the factory line. Built-in internal and external fins transfer heat from the fluid to the outside air for maximum cooling. This system incorporates a magnetic drain plug to capture loose particles for maximum front-end protection. Also included is a 1/8″ NPT calibration plug that is set to the factory fluid level which eliminates accidental overfilling.

    Product Features:
    • Durable Cast Aluminum
    • Magnetic Drain Plug Captures Loose Particles
    • Calibration Plug Set to Factory Fill Level Eliminates Overfilling
    • Built-In External and Internal Fins Dissipate Heat
    See More

    Best-Selling 2015 GMC Sierra 2500 HD Differential Oil

    Upgrade your Sierra 2500 HD with one of our 6 best-selling Differential Oil, earning an average 5 stars rating across 135 reviews.

    Royal Purple – High Performance 5W-30 Synthetic Engine Oil, Better Wear Protection, 5 Quart (Part No.51530)

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

    from

    $41.99
    Royal Purple Motor Oil is a specially formulated multi viscocity oil for use in gasoline and diesel engines of all types from cars and trucks to SUVs, motorcycles and boats. Royal Purple(R) Motor Oil with Synerlec(R) additive technology reduces friction, which results in a 1-3 percent increase in horsepower, lowers operating temperatures, provides superior corrosion protection, improves fuel economy, reduces emissions and extends oil life. A.P.I. Certified.

    Product Features:
    • Better wear protection
    • Increased fuel efficiency
    • Better protection of the expensive catalytic emission system
    • Improved compatibility with fuels containing ethanol
    • Superior corrosion protection
    • Meets ILSAC GF-5 and Dexos1 performance requirements
    See More

    Valvoline – DEXRON – VI ATF Full Synthetic Automatic Transmission Fluid, 1 Quart (Part No.822405)

    DEXRON - VI ATF Full Synthetic Automatic Transmission Fluid, 1 Quart

    from

    $14.49
    Valvoline DEXRON-VI/MERCON LV ATF is a full-synthetic transmission fluid formulated with advanced additive technology to meet and exceed the requirements of the General Motors DEXRON-VI specification. It is officially licensed and approved by GM and is fully back-serviceable and can be used wherever DEXRON-II and/or DEXRON-III are recommended. Recommended for use in the following applications: DEXRON-VI, DEXRON-III, DEXRON-II, and Allison C-4.

    Product Features:
    • Formulated with full-synthetic base stocks and advanced additive technology to meet the challenging demands of automatic transmissions
    • Enhanced anti-shudder protection for smooth shifting and maximum power transfer
    • Developed with anti-wear technology to help improve transmission durability
    • Engineered with a proprietary blend of base oils and advanced additives to provide better oil flow at low temperatures and greater film protection at higher temperatures
    See More

    Valvoline – Flex Fill Transmission & Differential Gear Oil: Full Synthetic 75W-90, 1 Quart (Part No.889785)

    Flex Fill Transmission & Differential Gear Oil: Full Synthetic 75W-90, 1 Quart

    from

    $18.99
    We’ve squeezed innovation into every ounce of Valvoline FlexFill SAE 75W-90 Full Synthetic Gear Oil, the ultimate gear protection in hypoid rear differentials and non-synchronized manual transmissions. Our unique new flexible pouch makes getting into the tightest places to lubricate gears easier than ever and with less waste. The superior detergent package-based formulation contains fully synthetic basestocks and special additives that help protect parts from rust and corrosion while providing exceptional high and low temperature protection and excellent thermal stability, especially in demanding driving situations such as towing and off-roading. It contains an extreme pressure additive for better load carrying capacity, wear resistance additives that assist in protecting gear teeth, a limited slip additive for optimal clutch pack performance, and an anti-foaming agent for better lubrication and service life. Valvoline FlexFill SAE 75W-90 Full Synthetic Gear Oil is recommended for use in axle applications requiring factory-fill or drain-and-fill levels for limited slip performance.

    Product Features:
    • FLEXIBLE POUCH FOR EASIER USE WITH LESS WASTE in tight, hard to reach undercarriage situations.
    • EXCEPTIONAL HIGH AND LOW TEMPERATURE PROTECTION ranging from -30F to 300F degrees for dependable coverage year-round
    • REDUCES CHATTERING AND PROTECTS GEAR TEETH from oxidation, rust, and wear
    • MEETS THE DEMANDS OF CONVENTIONAL AND LIMITED SLIP REAR DIFFERENTIALS where API GL-5 is specified, as well as non-synchronized manual transmissions that require API GL-4 or MT-1 fluid
    • MEETS OR EXCEEDS PERFORMANCE REQUIREMENTS for Mack GO-H and GO-J; API GL-5 and API MT-1; MIL-PRF-2105E; and SAE J2360
    See More

    Yukon Gear – Redline Synthetic "Shock Proof" Oil With Positraction Additive – 4 Quarts (Part No.15005)

    Redline Synthetic "Shock Proof" Oil With Positraction Additive - 4 Quarts

    from

    $148.99
    Redline Synthetic “Shock Proof” Oil with positraction Additive. 4 Quarts.

    Product Features:
    • Includes four quarts of Redline Shockproof oil and one 4oz bottle of Yukon positraction additive
    See More

    Yukon Gear – Redline Synthetic "Shock Proof" Oil – 3 Quarts (Part No.15000)

    Redline Synthetic "Shock Proof" Oil - 3 Quarts

    from

    $99.99
    Redline Synthetic “Shock Proof” Oil. 3 Quarts.

    Product Features:
    • Includes three quarts of Redline Shockproof oil
    See More

    Yukon Gear – Redline Synthetic "Shock Proof" Oil – 4 Quarts (Part No.15004)

    Redline Synthetic "Shock Proof" Oil - 4 Quarts

    from

    $137.99
    Redline Synthetic “Shock Proof” Oil. 4 Quarts.

    Product Features:
    • Includes four quarts of Redline Shockproof oil
    See More

    Top-Quality Rear Differential Cover Gaskets for 2015 GMC Sierra 2500 HDs

    Choose a high-quality OEM or aftermarket Rear Differential Cover Gasket for GMC Sierra 2500 HDs and enjoy top-notch performance from $8.29.

    Felpro – Axle Housing Cover Gasket: Irregular Shaped 14 Bolt Hole Gasket (Part No.RDS 55063)

    Axle Housing Cover Gasket: Irregular Shaped 14 Bolt Hole Gasket

    from

    $8.29
    Fel-Pro® gaskets are specifically designed for the repair environment to deliver a reliable seal on even the most troublesome applications. Designed for imperfect sealing surfaces and manufactured with proprietary materials, you can count on Fel-Pro for innovative sealing solutions for the real-world repair environment.

    Product Features:
    • Meets or exceeds all original equipment specifications
    • Application specific design to ensure a perfect fit
    • Engineered for the sealing repair environment
    • Validated for fit, form and function
    • Unsurpassed quality you can trust
    See More

    Yukon Gear – 11.5" Chrysler & GM Cover Gasket (Part No.23013)

    11.5" Chrysler & GM Cover Gasket

    from

    $44.99
    11.5″ Chrysler & GM cover gasket.

    Product Features:
    • Cover gasket
    • Fits GM and Chrysler 11.5″
    See More

    Yukon Gear – GM 10.5′ 14 Bolt Truck Cover Gasket (Part No.23016)

    GM 10.5' 14 Bolt Truck Cover Gasket

    from

    $13.99
    14T cover gasket.

    Product Features:
    • Cover gasket
    • Fits GM 10.5″ 14 bolt truck
    See More

    Top Picks for 2015 GMC Sierra 2500 HD Differential Bearings

    Invest in one of our 3 durable Differential Bearings for your 2015 GMC, knowing you’re getting trusted brands and expert craftsmanship.

    National – Bearing Race (Part No.382A)

    Bearing Race

    from

    $10.99
    Manufactured with premium-grade steel, National taper bearing cups feature crowned raceways to ensure even load distribution.

    Product Features:
    • PREMIUM MATERIALS – Precision manufactured using premium-grade steel for outstanding durability and performance
    • SMOOTH ROTATION – Crowned raceways for even load distribution
    • OE-STYLE DESIGN – Engineered to meet OE specifications
    • COMPREHENSIVE COVERAGE – Industry-leading coverage for domestic and import applications
    • RIGOROUS TESTING – Comprehensive testing throughout design and development processes by National engineers for quality you can count on
    See More

    Driveworks – Tapered Cone Wheel Bearing Assembly (Part No.S-387-AS)

    Tapered Cone Wheel Bearing Assembly

    from

    $18.49
    Value-priced bearing meets all cataloged application requirements.

    Product Features:
    • Brand may vary by location
    See More

    National – Tapered Roller Bearing Cone (Part No.JLM506849A)

    Tapered Roller Bearing Cone

    from

    $38.99
    Product Features:
    • PREMIUM MATERIALS: Precision manufactured using premium-grade steel for outstanding durability and performance
    • SMOOTH ROTATION: Crowned raceways and rollers for even load distribution
    • OE-STYLE DESIGN: Engineered to meet OE specifications
    • COMPREHENSIVE COVERAGE: Industry-leading coverage for domestic and import applications
    • RIGOROUS TESTING: Comprehensive testing throughout design and development processes by National engineers for quality you can count on
    See More

    Top-Rated Rear Housing Cover Gaskets for 2015 GMC Sierra 2500 HDs

    Make a smart move for your 2015 GMC Sierra 2500 HD with products all priced from $14.99 to $16.99.

    Felpro – Axle Housing Cover Gasket Irregular Shaped 14 Bolt Hole Gasket (Part No.RDS 55478)

    Axle Housing Cover Gasket Irregular Shaped 14 Bolt Hole Gasket

    from

    $14.99
    Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust.

    Product Features:
    • Meets or exceeds all original equipment specifications
    • Application specific design to ensure a perfect fit
    • Unsurpassed quality you can trust
    • Validated for fit, form and function
    • Each Fel-Pro gasket, no matter how small, is engineered to exacting standards with proprietary design, engineering and manufacturing processes
    See More

    Felpro – Axle Housing Cover Gasket Irregular Shaped 14 Bolt Hole Gasket (Part No.RDS 55486)

    Axle Housing Cover Gasket Irregular Shaped 14 Bolt Hole Gasket

    from

    $16.99
    Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust.

    Product Features:
    • Meets or exceeds all original equipment specifications
    • Application specific design to ensure a perfect fit
    • Unsurpassed quality you can trust
    • Validated for fit, form and function
    • Each Fel-Pro gasket, no matter how small, is engineered to exacting standards with proprietary design, engineering and manufacturing processes
    See More

    Top-Rated Differential Brands For Your 2015 GMC Sierra 2500 HD

    When it comes to finding the perfect Differential for your 2015 GMC Sierra 2500 HD, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 12 trusted brands. We carry the most popular Differential brands including FELPRO, National, and Dorman, and more, all known for their exceptional customer ratings (average brand rating of 4.6 stars) and competitive prices, as low as $8.29. Purchasing a Differential from us here at Advance Auto Parts is a smart move for both you and your 2015 GMC Sierra 2500 HD, providing peace of mind with parts that meet or exceed OEM standards.

    Popular FELPRO 2015 GMC Sierra 2500 HD Differentials

    If you’re looking for a top-quality Differential for your 2015 GMC Sierra 2500 HD, Advance Auto Parts has exactly what you need with our selection of FELPRO Differentials. We have 2 FELPRO Differentials in stock for this fitment, all known for their durability and precision fit. With prices starting at just $8.29 and an average cost of $11.64, you’ll find the perfect Differential for your needs and budget. FELPRO Differentials for the 2015 GMC Sierra 2500 HD come highly rated, with over 15 customer reviews and an impressive average rating of 4.6 stars. Choosing a FELPRO Differential from Advance Auto Parts is a smart move to ensure quality and value for your vehicle.
    Axle Housing Cover Gasket Irregular Shaped 14 Bolt Hole Gasket
    from $14.99
    (2)
    Axle Housing Cover Gasket Irregular Shaped 14 Bolt Hole Gasket
    “fel pro is best gasket for my purposes”

    Top-Quality National 2015 GMC Sierra 2500 HD Differentials

    For those in search of a high-quality Differential for their 2015 GMC Sierra 2500 HD, Advance Auto Parts offers a great selection of National Differentials. With 2 National Differentials in stock, you can trust you’re getting top-tier parts designed for durability and a perfect fit. Prices for these Differentials start at just $10.99, with an average price of $28.49, giving you a range of options to suit your budget. Backed by over 11 customer ratings and an average rating of 4.3 stars, National Differentials provide both reliability and excellent performance. Choosing a National Differential from Advance Auto Parts is a smart investment in your vehicle’s performance and longevity.
    Multi-Purpose Seal
    from $45.99
    (5)
    Multi-Purpose Seal
    “Fit good”
    Bearing Race
    from $10.99
    (6)
    Bearing Race
    “Fit perfectly. No difficulty replacing my old ones.”

    FAQs for 2015 GMC Sierra 2500 HD Differentials

    What are the best-selling Differentials for 2015 GMC Sierra 2500 HDs?

    Out of 159 Differentials that fit 2015 GMC Sierra 2500 HDs, the following parts are the top sellers:

    What’s the price range for 2015 GMC Sierra 2500 HD Differentials?

    The prices of Differentials for the 2015 GMC Sierra 2500 HD range from $5.99 up to $3,169.99 for the most premium parts.

    What is the average price of a Differential for a 2015 GMC Sierra 2500 HD?

    The average price for Differentials for the 2015 GMC Sierra 2500 HD is $444.69. Keep in mind the variety of part types within our Differential category, where you are likely to find a wide range of prices across a variety of parts and components.

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

    Yes, we carry Differentials for 24 model years of GMC Sierra 2500 HDs between 2001 and 2026. The following model years are the most popular for Differential purchases: 2023, 2022, 2021, 2020, 2019, 2018, 2017, 2016, and 2014.

    What are the cheapest Differentials for my 2015 GMC Sierra 2500 HD?

    The cheapest 2015 GMC Sierra 2500 HD Differentials we carry are:

    Does Advance Auto Parts sell Differentials for any other 2015 GMC models?

    Yes. We stock Differentials for 9 other popular 2015 GMC models. Some of the most popular are 2015 Yukon Differentials, 2015 Sierra 1500 Differentials, 2015 Savana 2500 Differentials, 2015 Sierra 3500 HD Differentials, and 2015 Savana 3500 Differentials.

    What types of Differentials do you sell for my 2015 GMC Sierra 2500 HD?

    As of 11/2/25, these are some of the most in-demand types of Differentials for a 2015 GMC Sierra 2500 HD:

    Can I get help with 2015 GMC Sierra 2500 HD Differential orders?

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

    What is your return policy for GMC Sierra 2500 HD Differentials?

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