2012 GMC Sierra 2500 HD Transmission Parts

Essential 2012 GMC Sierra 2500 HD Transmission Parts

ACDelco – AT Cooling Hose Fitt (Part No.J2010575613ACD)

AT Cooling Hose Fitt

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$33.41
AT Cooling Hose Fitt

Driveworks – Oil Seal (Part No.S-9449)

Oil Seal

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$1.99
Value-priced seal meets all cataloged application requirements.

Product Features:
  • Brand may vary by location
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Dorman – Remanufactured Transmission Control Module (Part No.609-200)

Remanufactured Transmission Control Module

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$423.99
This transmission control module has been fully tested and validated to match the function and performance of the original TCM on specified vehicle applications.

Product Features:
  • Direct replacement – this transmission control module matches the function and performance of the stock TCM on specified years, makes and models
  • Ideal solution – this transmission control module is a reliable replacement for an original part that has failed due to corrosion or electrical failure
  • Thoroughly tested – this TCM has undergone full vehicle simulator testing to confirm full functionality for reliable performance
  • 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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Carquest – Multi Purpose Relay (Part No.83A1004)

Multi Purpose Relay

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$15.99
High-quality products that meet OE appearance and performance to provide professional technicians and DIYers with a cost-effective solution.

Product Features:
  • High-quality products that meet OE appearance and performance to
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Dorman – Help – Torque Convertor Bolts (Part No.14099)

Torque Convertor Bolts

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$9.49
This torque converter hardware is designed to match the fit and function of the original hardware on specified vehicles. Made of quality materials, it is engineered for reliable performance.

Product Features:
  • Direct replacement – this torque converter hardware is designed to match the fit and function of the original hardware on specified vehicles
  • Ideal solution – this hardware is a reliable replacement for original hardware that has failed due to fatigue
  • Durable construction – this hardware is made from quality materials to ensure reliable performance and long service life
  • Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience
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Dorman – Help – Transmission Oil Cooler Seal (Part No.66219)

Transmission Oil Cooler Seal

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$11.49
This Dorman Automatic Transmission Oil Cooler Gasket eliminates leaks where the oil cooler line connects to the transmission. Gasket may break down over time, causing leaks, and should be replaced any time the oil cooler line and transmission are separated.

Product Features:
  • Durable construction – rubber over steel construction creates a positive seal and retains its shape
  • Direct replacement – fits and functions like original equipment
  • Easy to install – direct-fit, no special tools required
  • Vehicle tested – has undergone on-vehicle testing to ensure proper fit and performance
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Dorman – Shift Interlock Sole (Part No.J4081960512DOR)

Shift Interlock Sole

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$56.12
Shift Interlock Sole

National – Multi Purpose Seal (Part No.714598)

Multi Purpose Seal

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$7.29
National has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.

Product Features:
  • Low swell in hydrocarbon fluids
  • Design type: spring loaded; multi-lip
  • Provides good low temperature capability
  • Temperature range: -40°F to 225°F; -40°C to 107°C
  • Delivers quality and reliable performance for every type of repair
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WSO – AT Output Shaft Spee (Part No.J2558175687WSO)

AT Output Shaft Spee

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$26.97
AT Output Shaft Spee

ATP – AT OIL PUMP SEAL (Part No.JO-122)

AT OIL PUMP SEAL

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$14.99
AT OIL PUMP SEAL

Dorman – Help – Transmission Oil Dipstick: Direct Replacement, Steel (Part No.921-049)

Transmission Oil Dipstick: Direct Replacement, Steel

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$26.99
This automatic transmission dipstick is designed to match the fit and function of the original dipstick on specified vehicles, and is engineered for durability and reliable performance.

Product Features:
  • Direct replacement – this automatic transmission dipstick is designed to match the fit and function of the original dipstick on specified vehicles
  • Restores functionality – reliable replacement for an original dipstick that has bent or broken due to fatigue
  • Durable construction – this part is made from quality materials to ensure reliable performance and long service life
  • Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience
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ATP – AT PRESS SW MANIFOLD (Part No.JE-10)

AT PRESS SW MANIFOLD

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$65.99
AT PRESS SW MANIFOLD

aFe POWER – Transmission Pan (Part No.46-70072)

Transmission Pan

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$414.99
aFe Powers new deep transmission pan brings performance engineering to the protection of your trucks transmission. This transmission pan has additional capacity for 3 to 4 more quarts over stock at the factory line, a magnetic drain plug and a 1/8″ NPT port for your temperature sensor. Built-in internal and external fins transfer heat from the fluid to the outside air for maximum cooling. This transmission pan is constructed out of durable die-cast aluminum with reinforced ribs and a wrinkle black powder-coating for maximum strength and styling.

Product Features:
  • A100/Allison Transmission
  • Machined Fins
  • Magnetic Drain Plug
  • Internal And External fins
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ACDelco – Neutral Safety Switc (Part No.J4050351665ACD)

Neutral Safety Switc

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$142.24
Neutral Safety Switc

Dorman – Transmission Oil Cooler Line: Exact Fit, Metal/Rubber (Part No.624-442)

Transmission Oil Cooler Line: Exact Fit, Metal/Rubber

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$72.99
This automatic transmission oil cooler hose assembly is designed to match the fit and function of an original assembly. It is engineered from durable components as a reliable replacement for leaking or damaged lines on specified vehicles.

Product Features:
  • Direct replacement – this automatic transmission oil cooler hose assembly is designed to match the fit and function of the original equipment assembly on specified vehicle makes, models and years
  • Ideal solution – engineered to help ensure proper transmission cooling when the original assembly is leaking or has failed from corrosion, collision, vibration, or fitting damage
  • Durable construction – made of quality materials for reliable performance and long service life
  • 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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Dorman – Help – Shift Cable Bushing (Part No.14073)

Shift Cable Bushing

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$18.79
Fixing a broken automatic transmission shift cable usually requires replacing the entire cable assembly. This Dorman OE FIX shift cable bushing saves expense by allowing the replacement of just the failed bushing.

Product Features:
  • Convenient solution – this shift cable bushing directly replaces a broken bushing and eliminates the need to replace the entire cable assembly
  • Save time and money – save the expense and significant installation time of replacing an entire cable assembly
  • Ensure fit – this bushing is vehicle-specific and precision-engineered for specified Chevrolet, GMC, Isuzu, and Oldsmobile models and years
  • Trustworthy quality – designed in the United States and backed by more than a century of automotive aftermarket excellence
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Carquest Premium – ABS Wheel Speed Sensor Connector (Part No.PTA1078)

ABS Wheel Speed Sensor Connector

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$27.49
CARQUEST premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.

Product Features:
  • Premium quality materials for longer service life
  • Sealed connections (where applicable) to prevent environmental corrosion and performance issues
  • Global coverage for import and/or domestic applications
  • OE specified wire gauge to ensure a reliable electrical connection
  • Designed to meet or exceed OE specifications in form, fit and function
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Anchor – Transmission Mount: Rear, 1 Piece (Part No.2638)

Transmission Mount: Rear, 1 Piece

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$23.49
The purpose of the mount is to support the engine and transmission on the chassis and dampen vibration and noise from reverberating to the rest of the vehicle. Engine and Transmission Mounts are engineered and manufactured to meet or exceed OEM specifications using the latest CAD/CAM engineering process to ensure superior quality, form, fit and function. Only premium quality materials are used in the manufacturing process to guarantee precise performance and maximum durability. Applicable to CADI 99-14; CHEV 82-19; GMC 82-14; HUMMER 03-10; ISUZU 06-08; OLDS 91-94;. Please verify your application.

Product Features:
  • MAXIMUM LIFE & PERFORMANCE: Both natural and SBR (Styrene Butadiene) rubber provide good abrasion resistance and aging stability to ensure maximum life and performance.
  • MEETS OR EXCEEDS DUROMETER MEASUREMENTS: All rubber material is manufactured to specific Durometer (hardness) measurements based on the vehicle’s application requirements.
  • HARDENED STEEL FASTENERS: All fasteners are made of hardened steel with heat treated Grade #5 bolts.
  • SUPERIOR BOND: A special Chemlock® bonding agent is used to ensure a superior rubber-to-metal bond.
  • HYDRAULIC MOUNT DESIGN: Hydraulic Mounts (applicable where OE) are designed for most front wheel drive vehicles because transverse drive train mounting.
  • For Years: 1982-2019
  • Weight approx: 5 Lbs
  • STUDS: M10-150
  • INTERLOCK
  • BOLT HOLES CENTERLINE: 7.5 INCH / 190.5 MM
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National – Ball Bearing (sold by each) (Part No.110)

Ball Bearing (sold by each)

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$77.99
National Oil Seals & Bearings offer a full line of premium oil seals and bearings.

Product Features:
  • Premium bearing design matches OEM specifications
  • Precision manufactured using premium-grade steel for outstanding durability and performance
  • Controlled heat treating process for lasting performance and extended bearing life
  • Industry leading coverage
  • Professional technicians know they can depend on National
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Carquest Premium – Traction Control Switch (Part No.TRA1007)

Traction Control Switch

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$32.99
The main device in any electrical circuit is a switch. In an electrical circuit a device is required to turn a component on or off when commanded by the operator, within the switch are contacts that will complete the electrical path to the load, or driven device. The operation of a switch may be manual from a person or could be electrical from some sort of controller or computer.

Product Features:
  • Product constructed to meet all design and operating characteristics as intended by the vehicle manufacturer.
  • 100% thermo-shock and vibration tested to ensure superior performance in extreme conditions.
  • 100% end-of-line tested to ensure accurate signal output providing product reliability, every time.
  • Tin plated lead frame prevents corrosion and ensures a reliable terminal connection under adverse ambient conditions.
  • Lead frame terminal size and location determined using image dimension measuring system or 3D laser scanner.
  • Where applicable electrical connectors meet or exceed OE wire gauge, insulation, and terminal material requirements.
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Driveworks – Transfer Case Output Shaft Seal (Part No.S-4503N)

Transfer Case Output Shaft Seal

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$13.29
Product Features:
  • Brand may vary by location
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Dorman – Drain Plug – M12-1.75 Pilot Point (Part No.65416)

Drain Plug - M12-1.75 Pilot Point

from

$9.49
This drain plug is designed to match the dimensions and function of the original plug on specified applications. Made of quality materials, it is engineered for reliable performance and durability.

Product Features:
  • Direct replacement – this drain plug matches the dimensions and function of the factory hardware on specified vehicle years, makes and models
  • Ideal solution – this drain plug is a reliable replacement for an original part that is damaged or lost during service
  • Durable construction – this part is made from quality materials to ensure reliable performance and a long service life
  • Quality assured – backed by a team of product experts in the United States and more than a century of automotive experience
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National – Bearings (Part No.M802048)

Bearings

from

$23.99
National Oil Seals & Bearings offer a full line of premium oil seals and bearings.

Product Features:
  • Premium bearing design matches OEM specifications
  • Precision manufactured using premium-grade steel for outstanding durability and performance
  • Crowned raceways and rollers to ensure even load distribution for maximum life
  • Industry leading coverage
  • Professional technicians know they can depend on National
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ACDelco – AT Valve Body Separa (Part No.J5028745013ACD)

AT Valve Body Separa

from

$33.03
AT Valve Body Separa

Imperial – Econo-Kool® Transmission Oil Cooler (Part No.241018)

Econo-Kool® Transmission Oil Cooler

from

$65.99
Product Features:
  • Imperial Econo-Kool« tube and fin transmission cooler
  • Size: 3/4″ x 10″ x 15-7/8″
  • Class “A” motor homes, large travel trailers, 5th-wheel trailers
  • GVWR up to 26,000 lbs.; towing up to 10,000 lbs.
  • Compatible with OEM cooler systems
  • Ultrasonically soldered for reliability
  • 100% pressure testing to 150 PSI for quality assurance
  • High efficiency turbulators
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Dorman – Help – Flexplate Mounting Bolts (Part No.14112)

Flexplate Mounting Bolts

from

$18.29
Servicing or installing a flywheel or flexplate on a General Motors LS engine with a manual or automatic transmission? Ensure a truly professional repair by replacing all the worn or broken factory bolts with this convenient package of six direct-replacement 11mm x 1.5 mounting bolts. Coated with clear zinc for corrosion resistance, with threadlocker already applied, they’re precision-manufactured from strong steel for long service life.

Product Features:
  • Direct replacement – these six 11mm x 1.5 flywheel bolts match the fit, function and performance of the factory fasteners
  • Convenient package – package contains six bolts, the exact quantity needed for a complete repair
  • Durable construction – coated with clear zinc for corrosion resistance, with threadlocker already applied, and made from strong steel for long service life
  • 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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Imperial – Transmission Line Fitting Kit (Part No.240390)

Transmission Line Fitting Kit

from

$14.79
Product Features:
  • Transmission line fitting kit
  • GM, Jeep; 5/8″-18 inverted flare
  • Helps simplify transmission cooler installation
  • Allows for auxiliary transmission cooler installation without cutting OE lines
  • Crafted from high-quality material that makes it durable and longer-lasting
  • A high quality, direct fit OE replacement
  • Easily connects the transmission cooler line to the cooler hose
  • Coated for extra protection against corrosion
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Dorman – Transmission Line Connector With 3/8 Tube X 5/8-18 In. Thread (Part No.800-605)

Transmission Line Connector With 3/8 Tube X 5/8-18 In. Thread

from

$6.49
Made of quality materials, this automatic transmission oil cooler line connector matches the fit and function of a damaged original equipment connector to restore leak-free performance between the transmission and the oil cooler.

Product Features:
  • Quality replacement – this transmission cooler connector matches the fit and function of the original equipment connector
  • Durable construction – this oil cooler line connector is made of quality materials for a precise fit and leak-free durability
  • Performance tested – this connector has been rigorously pressure tested to ensure reliable performance
  • Ideal shop supply – this connector is recommended to have on hand any time service is being performed on the transmission oil cooler line
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2012 GMC Sierra 2500 HD Transmission Parts

You count on your 2012 GMC Sierra 2500 HD to run right. That means taking care of it with regular maintenance, necessary repairs, and the right parts. Advance Auto Parts can help with all of that thanks to our extensive inventory of trusted Transmission Parts. With 96 Transmission Parts ranging in price from $2.60 to $4,046.99, you’re sure to find everything you need for your 2012 GMC Sierra 2500 HD.

Brands matter. If you want to shop a specific Transmission Parts brand, we stock 19 different brands like Imperial, Dorman, and Permatex. 2012 GMC Sierra 2500 HD Transmission Parts start as low as $2.60!

One of the best ways to find top quality OEM or aftermarket Transmission Parts is by asking professionals. Short of that, you can shop with confidence thanks to our 1,071 extensive product reviews on 2012 GMC Sierra 2500 HD Transmission Parts. Some of the top-rated Transmission Parts products we carry are Plate and Fin Style Trans Cooler 3/4" x 9-1/2" x 11" Heavy Duty with 4.5 stars and Maxi-Kool® XL Transmission Oil Cooler with 5.0 stars.

Did we mention you can order your Transmission Parts from our online catalog and have them shipped right to your garage? Or, if you feel like seeing the parts first-hand, search for your nearest Advance Auto Parts location above and pick up in-store when you’re ready. Browse our full Transmission Parts inventory for your 2012 GMC Sierra 2500 HD below to get started!

Top-Rated Transmission Parts Brands For Your 2012 GMC Sierra 2500 HD

Trusted Transmission Parts OEM and aftermarket product brands are what Advance Auto Parts specializes in. The brands we work with are sure to keep that 2012 GMC Sierra 2500 HD running right for years to come. In our inventory you’ll find brands like Imperial, Dorman, Permatex, and even more.

Popular Permatex Transmission Parts

You’ll find popular Permatex brand products across Automatic Transmission Pan and Gaskets. All are waiting to get your 2012 GMC Sierra 2500 HD back on the road. Some of the top-rated Permatex products in these categories are:
High-Torque, High-Vibration RTV Silicone Gasket Maker, 13 OZ
from $26.99
(7)
High-Torque, High-Vibration RTV Silicone Gasket Maker, 13 OZ
Transmission Pan Gaskets

FAQs for 2012 GMC Sierra 2500 HD Transmission Parts

What are the most purchased Transmission Parts for the 2012 GMC Sierra 2500 HD?

Out of 96 Transmission Parts for the 2012 GMC Sierra 2500 HD, the most popular in our inventory are:
Torque Convertor Bolts
from $9.49
This product is not rated
Torque Convertor Bolts
Torque Converter Hardware
GM Splash Shield Retainer
from $4.49
This product is not rated
GM Splash Shield Retainer
Transmission Control Module Bolt
Bearings
from $23.99
(7)
Bearings
Transfer Shaft Bearing

What are the top-rated 2012 GMC Sierra 2500 HD Transmission Parts?

Top-rated Transmission Parts for your 2012 GMC Sierra 2500 HD based on customer reviews/ratings are:
Plate and Fin Style Trans Cooler 3/4" x 9-1/2" x 11" Heavy Duty
from $80.99
(8)
Plate and Fin Style Trans Cooler 3/4" x 9-1/2" x 11" Heavy Duty
“Used this cooler to replace the missing factory one on my Polaris 330 ATV. Made an adapter plate to fit to the fan housing. Works great, beats the $30”
Maxi-Kool® XL Transmission Oil Cooler
from $73.99
(7)
Maxi-Kool® XL Transmission Oil Cooler
“this transmission oil cooler is replacing my one on my 2000 dodge dakota its priced right mid size and easy to put in the ome one is 250 this is 60 an”
Transmission Line Connector - 3/8 in OD Tube x 9/16-18 UNF Thread
from $8.99
(5)
Transmission Line Connector – 3/8 in OD Tube x 9/16-18 UNF Thread
“Put on my 2004 silverado”