2003 GMC Sierra 2500 Transmission Parts

Essential 2003 GMC Sierra 2500 Transmission Parts

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
See More

Dorman – GM Splash Shield Retainer (Part No.963-405D)

GM Splash Shield Retainer

from

$4.49
Constructed of quality materials, this multi-purpose retainer provides the same function and versatility as the original equipment retainer ensuring long service life.

Product Features:
  • Ideal replacement – this retainer matches the fit and function of the original equipment retainer for this vehicle application
  • Quality material – this retainer is made of durable material for long-lasting service
  • Versatile design – this retainer is suitable for a variety of automotive uses
  • Excellent value – this part offers original equipment quality at a competitive cost
See More

B & M – Automatic Shifter, Hammer Shifter, Universal (Part No.80885)

Automatic Shifter, Hammer Shifter, Universal

from

$339.99
The Hammer shifter may just be the most comfortable and versatile shifter available. The unique design of the shift handle easily fits all sizes of hands providing the appropriate wrist angle and feel when shifting. The multi-position lockout trigger is s

Product Features:
  • Ratchet Action Shifter
  • Cable Operated
  • Quick Installation
  • Accurate Shifting
  • Reverse Lockout Feature
See More

Pro-King – Automatic Transmission Basic Rebuild Kit (Part No.KB-830)

Automatic Transmission Basic Rebuild Kit

from

$196.99
This Basic Rebuild Kit contains a complete gasket Kit and friction set. Each Rebuild Kit contains only the highest quality parts that meet or exceed OE specifications.

Product Features:
  • Does not include steels or filter
See More

Carquest – Multi Purpose Relay (Part No.83A1004)

Multi Purpose Relay

from

$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
See More

Driveworks – Auto Transmission Output Shaft Seal (Part No.S-4934)

Auto Transmission Output Shaft Seal

from

$8.49
Product Features:
  • Brand may vary by location
See More

GM Genuine Parts – Park/Neutral Position and Back-Up Lamp Switch (Part No.D2263C)

Park/Neutral Position and Back-Up Lamp Switch

from

$85.99
GM Genuine Parts Parking / Neutral Position and Back Up Light Switches are designed, engineered, and tested to rigorous standards, and are backed by General Motors. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE).

Product Features:
  • Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
  • GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
  • GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
  • GM regularly updates production and service part designs to integrate new materials and technologies
See More

Dorman – Help – Shift Cable Bushing (Part No.14073)

Shift Cable Bushing

from

$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
See More

Imperial – High Performance Transmission Oil Cooler (Part No.240514)

High Performance Transmission Oil Cooler

from

$81.99
High Performance Transmission Oil Cooler 3/4″ x 7-1/2″ x 15-1/2″. Heavy duty. Black. Imperial High Performance coolers are designed to provide outstanding cooling as well as complement other high-performance accessories.

Product Features:
  • Imperial high-performance transmission cooler
  • Size: 3/4″ x 7-1/2″ x 15-7/8″
  • SAE 45-degree fittings for maximum reliability
  • Electrostatic powder-coated to prevent corrosion
See More

Dorman – Transmission Oil Cooler Line: Exact Fit, Metal/Rubber (Part No.624-118)

Transmission Oil Cooler Line: Exact Fit, Metal/Rubber

from

$38.99
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
See More

Driveworks – Tapered Roller Bearing (Part No.S-M-802048)

Tapered Roller Bearing

from

$16.99
Product Features:
  • Brand may vary by location
See More

ACDelco – Neutral Safety Switc (Part No.J4050351665ACD)

Neutral Safety Switc

from

$142.24
Neutral Safety Switc

B & M – CAST DEEP PAN (Part No.70295)

CAST DEEP PAN

from

$349.99
Add fluid capacity to your transmission. Extra fluid means more cooling, and more cooling means better efficiency and performance. Add life to your transmission with a B&M Deep Pan!

Product Features:
  • Additional Oil Capacity
  • More Cooling Ability
  • No Dipstick Modification
  • Some Include Fluid Pickup Extension
  • Built-In Drain Plugs
  • Cast Aluminum
See More

Vemo – ABS Speed Sensor (Part No.N6030340217VMO)

ABS Speed Sensor

from

$26.69
The VEMO OE quality ABS speed sensor is engineered to the exact specifications of the vehicle manufacturer to ensure the replacement sensor is the same in quality and function as the part installed as original equipment. Developed for the anti-block braking system, wheel speed sensors send information to many on-board electronic systems. The rotational speed of the wheels is transmitted from the sensor to the control unit and from there to the transmission, engine, navigation and chassis control systems. This data is essential for ABS, ASR and ESP, to prevent blocking or wheel spin. Due to their versatile use, the sensors make a direct contribution to driving dynamics and safety. Moreover, driving comfort can be improved, fuel consumption reduced and emission levels decreased. Failure of the wheel speed sensors means an acute safety risk! The cause may be electrical or mechanical disruption, for example increased wheel bearing play, a broken wire or a corroded plug contact. With more than 670 different wheel speed sensors for vehicles of all the leading manufacturers, the quality brand VEMO offers a high-quality alternative.

Product Features:
  • OE quality direct fit application
  • Manufactured to meet or exceed OE requirements and testing
  • Fuel consumption reduced and emission levels decreased
  • Ground-isolated design with two-wire shielded harness helps protect the sensor signal from electro-magnetic interference – –
See More

Premium Drive Train – Automatic Transmission Assembly (Part No.T4L60E4899T2)

Automatic Transmission Assembly

from

$1995.99
(PDT)Premium Drivetrain Transmissions are remanufactured to original equipment (OEM) demanding specifications by an OEM builder. Each transmission assembly is manufactured with the highest technology equipment, the most intelligent engineering support, and the best practices available in remanufacturing today.

Product Features:
  • All transmissions are completely disassembled and cleaned. All cases are media blasted. Internal parts are inspected for wear or damage and replaced as required. All bushings are inspected and replaced as required.
  • 100% of friction components are replaced with upgraded heavy duty parts.
  • Drum assemblies are air checked and side play is checked to assure proper clearance. 100% of seals, o’rings and gaskets are replaced.
  • 100% of solenoids are checked and replaced if they do not pass duty cycle tests. Internal wiring harness are checked and replaced as necessary. Valve bodies are disassembled, cleaned, and measured for wear. Valve body valves and valve bores are inspected and valve bores are machined as required. Completed valve bodies are tested for proper operation prior to dyno testing.
  • Transmissions are assembled, end plays are set and fasteners are torqued to the required specification.
  • Torque Converter: 100% of converters are dynamic balanced. 100% of pumps are furnaced brazed. 100% new bearings and o’rings. 100% new springs and rollers in stator. 100% new thrust washers. 100% new friction liners in overdrive lockup converters.
  • 100% of transmissions are dynamometer tested to ensure proper pressures and shift quality throughout the operating range. All upshifts and downshifts are checked against preset parameters. Torque converter stall speed and lockup is verified on the dyno
  • Product might not be available in all states due to local laws.
See More

National – Bearings (Part No.208)

Bearings

from

$39.49
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
See More

National – Bearings (Part No.B-5020)

Bearings

from

$25.49
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
  • Available in both caged design and full complement
  • Industry leading coverage
  • Professional technicians know they can depend on National
See More

Carquest Premium – Automatic Transmission Pressure Control Solenoid (Part No.TCA1018)

Automatic Transmission Pressure Control Solenoid

from

$68.99
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.
See More

Carquest Premium – ABS Wheel Speed Sensor Connector (Part No.PTA1007)

ABS Wheel Speed Sensor Connector

from

$10.49
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
See More

ATP – AT OIL PAN GASKET (Part No.JG-107)

AT OIL PAN GASKET

from

$9.99
AT OIL PAN GASKET

Mahle – Oil Dipstick Seal (Part No.A1120666332MAH)

Oil Dipstick Seal

from

$2.60
Oil Dipstick Seal

ATP – ATHARNESS VSS REPR (Part No.JE-22)

ATHARNESS VSS REPR

from

$148.99
ATHARNESS VSS REPR

ATP – AT/HARNESS VSS REPR (Part No.JE-15)

AT/HARNESS VSS REPR

from

$48.99
AT/HARNESS VSS REPR

ATP – ATHARNESS VSS REPR (Part No.JE-24)

ATHARNESS VSS REPR

from

$119.99
ATHARNESS VSS REPR

ATP – Automatic Transmission Shifter Cable (Part No.Y-1285)

Automatic Transmission Shifter Cable

from

$92.99
Automatic Transmission Shifter Cable

Popular 2003 GMC Sierra 2500 Transmission Parts Categories

2003 GMC Sierra 2500 Transmission Parts

You count on your 2003 GMC Sierra 2500 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 166 Transmission Parts ranging in price from $1.99 to $2,984.99, you’re sure to find everything you need for your 2003 GMC Sierra 2500.

Brands matter. If you want to shop a specific Transmission Parts brand, we stock 29 different brands like Dorman, National, and Imperial. 2003 GMC Sierra 2500 Transmission Parts start as low as $1.99!

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 628 extensive product reviews on 2003 GMC Sierra 2500 Transmission Parts. Some of the top-rated Transmission Parts products we carry are Maxi-Kool® XL Transmission Oil Cooler with 4.4 stars and Multi Purpose Seal with 4.4 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 2003 GMC Sierra 2500 below to get started!

Top-Rated Transmission Parts Brands For Your 2003 GMC Sierra 2500

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 2003 GMC Sierra 2500 running right for years to come. In our inventory you’ll find brands like Dorman, National, Imperial, and even more.

Popular ACDelco Transmission Parts

You’ll find popular ACDelco brand products across Back Up Neutral Safety Parts. All are waiting to get your 2003 GMC Sierra 2500 back on the road. Some of the top-rated ACDelco products in these categories are:
Black Multi-Purpose Relay
from $16.49
(2)
Black Multi-Purpose Relay
Neutral Safety Relays

Top-Rated ATP Transmission Parts


If ATP are what you’re looking for, our inventory holds plenty. We stock ATP brand Transmission Parts for your 2003 GMC Sierra 2500, and some of our most reviewed ATP parts include:
Automatic Transmission Shifter Cable
from $92.99
(255)
Automatic Transmission Shifter Cable
Automatic Transmission Shifter Cable Kits
Automatic Transmission Shifter Cable
from $83.99
(13)
Automatic Transmission Shifter Cable
Transmission Shift Cables

FAQs for 2003 GMC Sierra 2500 Transmission Parts

What are the most purchased Transmission Parts for the 2003 GMC Sierra 2500?

Out of 166 Transmission Parts for the 2003 GMC Sierra 2500, the most popular in our inventory are:
High Performance Transmission Oil Cooler
from $81.99
(48)
High Performance Transmission Oil Cooler
OE Transmission Coolers
Transmission Line Connector With 3/8 Tube X 5/8-18 In. Thread
from $6.49
(16)
Transmission Line Connector With 3/8 Tube X 5/8-18 In. Thread
Automatic Transmission Line Connectors
Transmission Mount: Rear, 1 Piece
from $23.49
(20)
Transmission Mount: Rear, 1 Piece
Transmission Mounts

What are the top-rated 2003 GMC Sierra 2500 Transmission Parts?

Top-rated Transmission Parts for your 2003 GMC Sierra 2500 based on customer reviews/ratings are:
Maxi-Kool® XL Transmission Oil Cooler
from $81.99
(31)
Maxi-Kool® XL Transmission Oil Cooler
“Great , kept my trans cool pulling a large loader”
Multi Purpose Seal
from $6.99
(20)
Multi Purpose Seal
“The product works well”
Multi Purpose Seal
from $18.99
(15)
Multi Purpose Seal
“it sealed”