2003 GMC W3500 Forward Transmission Parts
Find Your Specific 2003 GMC W3500 Forward Transmission Parts
Below you will find various in-demand GMC Transmission Parts, components and accessories for your 2003 W3500 Forward. Advance Auto Parts has popular W3500 Forward parts like Automatic Transmission Pan and Gaskets, Manual Transmission Parts, Transmission Connectors and more. You’ll also find aftermarket and OEM Transmission Parts for other W3500 Forward model years including
1999,
2000,
2001,
2002,
2004,
2005,
2006,
2007,
2008 and more. Select a category of 2003 GMC W3500 Forward Transmission Parts below and start saving instantly.
Popular 2003 GMC W3500 Forward Transmission Parts Categories
Essential Transmission Parts for 2003 GMC W3500 Forwards
Dorman – Transmission Oil Pan: Direct Fit, Steel, 13.5 Quart (Part No.265-810)
from
$99.99
This replacement transmission oil pan is a direct replacement for a damaged original equipment transmission pan. Made of quality materials, it’s designed for reliable, leak-free service.
Product Features:
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Product Features:
- Ideal replacement – this transmission oil pan matches the fit and function of the original pan for a trouble-free replacement
- Durable construction – this transmission oil pan is made of quality materials for durability and leak-free performance
- Cost-effective solution – offers original equipment performance at competitive price
- Quality tested – this part has undergone try-on testing to ensure a quality fit
Dorman – Transmission Line Connector (Part No.800-755)
from
$12.99
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:
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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
Dorman – Transmission Line Connector with 3/8 Tube X 1/4-18 In. Thread (Part No.800-604)
from
$8.99
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:
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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
Imperial – Transmission Line Fitting Kit (Part No.240390)
from
$12.99
Our products are engineered and tested to provide years of trouble free operation. Backed by over 50 years of mobile a/c experience, fix it once and fix it right with Imperial.
Product Features:
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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
- 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
ATP – Manual Transmission Shift Cable (Part No.Y-1555)
from
$131.99
Manual shift cables connect the transmission selector lever/shifter to the transmission linkage. Old cables can bind, break, or just become sluggish. The best repair is to replace the old cable with a new one. Pioneer Manual shift cables are designed to fit and function just like the original part to ensure durability and long life.
Product Features:
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Product Features:
- Manufactured to OE specifications to restore proper operation.
- High tensile strength steel inner cable provides durability.
- Protective polymer housing protects cable from debris and abbrassion, allowing for smooth operation.
- Includes needed cable ends, brackets and grommet (where applicable) for proper repair.
Dorman – HD Solutions – Gearshift Control Cable Assembly (Part No.924-7005)
from
$344.99
Manufactured from durable materials, this manual transmission shift linkage bushing matches the fit and function of the original bushing.
Product Features:
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Product Features:
- Direct replacement – this manual transmission shift linkage bushing matches the fit and function of the original part
- Ideal solution – designed and manufactured to ensure a seamless installation
- Durable construction – manufactured from quality materials for reliable service
- Trustworthy design – backed by a company with more than 100 years of automotive aftermarket experience
Dorman – HD Solutions – Gearshift Control Cable Assembly (Part No.924-7003)
from
$366.99
Manufactured from durable materials, this manual transmission shift linkage bushing matches the fit and function of the original bushing.
Product Features:
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Product Features:
- Direct replacement – this manual transmission shift linkage bushing matches the fit and function of the original part
- Ideal solution – designed and manufactured to ensure a seamless installation
- Durable construction – manufactured from quality materials for reliable service
- Trustworthy design – backed by a company with more than 100 years of automotive aftermarket experience
Dorman – HD Solutions – Gearshift Control Cable Assembly (Part No.924-7002)
from
$300.99
Manufactured from durable materials, this manual transmission shift linkage bushing matches the fit and function of the original bushing.
Product Features:
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Product Features:
- Direct replacement – this manual transmission shift linkage bushing matches the fit and function of the original part.
- Ideal solution – designed and manufactured to ensure a seamless installation
- Durable construction – manufactured from quality materials for reliable service
- Trustworthy design – backed by a company with more than 100 years of automotive aftermarket experience
Spartan – Automatic Transmission Assembly; GM RWD 4L80E 4-Spd (Part No.1666A-81)
from
$2458.00
Our remanufactured transmissions have improved torque converters included with every transmission to eliminate the possibility of front seal leaks, vibration or premature bushing wear, All torque converters are tested for leaks, lock-up, concentricity & balance. Every fully remanufactured valve body, with complete system correction & recalibration kit, is tested independently & includes updated throttle valve, manual valve, 4-spool switch valve, pressure regulator valve & governor plugs for improved shifting, lubrication & performance. All wear-prone valves are restored to stringent specifications & vacuum tested to confirm proper function. Each remanufactured transmission is hot, cold, load & simulated road testing. All remanufactured transmissions are backed by the industry’s best, no-hassle nationwide warranty(limited).
Product Features:
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Product Features:
- Our Remanufactured Transmissions include torque convertors, trans is completely disassembled & checked then reassembled to spec for tolerances, vacuum, seal & balance, all wear parts replaced & sim tested.
- Our Remanufactured Transmissions include torque convertors, trans is completely disassembled & checked then reassembled to spec for tolerances, vacuum, seal & balance, all wear parts replaced & sim tested.
- Transmissions are securely packaged in a recyclable container that will also protect your core on the return trip. Our nationwide warehouse network means speedy delivery.
- All of our transmissions are Dyno tested to ensure the highest standard of trouble free service and longevity.
Shift Pro by ETE – 4L80E Automatic Transmission Assembly (Part No.T281174)
from
$2371.99
At Shift Pro Inc, fully remanufactured transmissions go beyond the name. So, what’s in that name to start? Pro Engineering: your transmission has been re-engineered to meet or exceed OE standards for tolerances, durability, and quality. Pro Performance: upgraded components and a fully remanufactured torque converter add to enhanced durability over your transmission’s lifetime. Pro Performance: hot-, cold-, load-, and simulated road-tested on custom dynamometers, your transmission is ready to go, wherever you’re headed.
Product Features:
See More
Product Features:
- Fully tested torque converter included. Shift Pro Inc tests for leaks, lock-up, concentricity, and balance to eliminate the possibilities of front seal leaks, premature bushing wear, and vibration.
- All dynamometer testing is conducted with Shift Pro Inc’s custom testing program for at least 30 minutes.
- During dynamometer testing, Shift Pro Inc transmissions are cold, hot, load, and road tested using a fully synthetic transmission fluid and filtration system.
- All wear-prone valves in the completely remanufactured valve body are restored to stringent specifications and vacuum tested to verify proper function.
- Shift Pro Inc’s quality control process includes build specification checks performed by four different specialized technicians during the remanufacturing process.
- No paperwork or registration is required with Shift Pro Inc’s warranty. Each no-hassle warranty is attached to the vehicle VIN and transferrable with ownership.
- Product might not be available in all states due to local laws.
Spartan – Automatic Transmission Assembly; GM RWD 4L80E 4-Spd (Part No.1662A-81)
from
$2458.00
Our remanufactured transmissions have improved torque converters included with every transmission to eliminate the possibility of front seal leaks, vibration or premature bushing wear, All torque converters are tested for leaks, lock-up, concentricity & balance. Every fully remanufactured valve body, with complete system correction & recalibration kit, is tested independently & includes updated throttle valve, manual valve, 4-spool switch valve, pressure regulator valve & governor plugs for improved shifting, lubrication & performance. All wear-prone valves are restored to stringent specifications & vacuum tested to confirm proper function. Each remanufactured transmission is hot, cold, load & simulated road testing. All remanufactured transmissions are backed by the industry’s best, no-hassle nationwide warranty(limited).
Product Features:
See More
Product Features:
- Our Remanufactured Transmissions include torque convertors, trans is completely disassembled & checked then reassembled to spec for tolerances, vacuum, seal & balance, all wear parts replaced & sim tested.
- Our Remanufactured Transmissions include torque convertors, trans is completely disassembled & checked then reassembled to spec for tolerances, vacuum, seal & balance, all wear parts replaced & sim tested.
- Transmissions are securely packaged in a recyclable container that will also protect your core on the return trip. Our nationwide warehouse network means speedy delivery.
- All of our transmissions are Dyno tested to ensure the highest standard of trouble free service and longevity.
Shift Pro by ETE – 4L80E Automatic Transmission Assembly (Part No.T281161)
from
$2371.99
At Shift Pro Inc, fully remanufactured transmissions go beyond the name. So, what’s in that name to start? Pro Engineering: your transmission has been re-engineered to meet or exceed OE standards for tolerances, durability, and quality. Pro Performance: upgraded components and a fully remanufactured torque converter add to enhanced durability over your transmission’s lifetime. Pro Performance: hot-, cold-, load-, and simulated road-tested on custom dynamometers, your transmission is ready to go, wherever you’re headed.
Product Features:
See More
Product Features:
- Fully tested torque converter included. Shift Pro Inc tests for leaks, lock-up, concentricity, and balance to eliminate the possibilities of front seal leaks, premature bushing wear, and vibration.
- All dynamometer testing is conducted with Shift Pro Inc’s custom testing program for at least 30 minutes.
- During dynamometer testing, Shift Pro Inc transmissions are cold, hot, load, and road tested using a fully synthetic transmission fluid and filtration system.
- All wear-prone valves in the completely remanufactured valve body are restored to stringent specifications and vacuum tested to verify proper function.
- Shift Pro Inc’s quality control process includes build specification checks performed by four different specialized technicians during the remanufacturing process.
- No paperwork or registration is required with Shift Pro Inc’s warranty. Each no-hassle warranty is attached to the vehicle VIN and transferrable with ownership.
- Product might not be available in all states due to local laws.
Shift Pro by ETE – 4L80E Automatic Transmission Assembly (Part No.T281173)
from
$2371.99
At Shift Pro Inc, fully remanufactured transmissions go beyond the name. So, what’s in that name to start? Pro Engineering: your transmission has been re-engineered to meet or exceed OE standards for tolerances, durability, and quality. Pro Performance: upgraded components and a fully remanufactured torque converter add to enhanced durability over your transmission’s lifetime. Pro Performance: hot-, cold-, load-, and simulated road-tested on custom dynamometers, your transmission is ready to go, wherever you’re headed.
Product Features:
See More
Product Features:
- Fully tested torque converter included. Shift Pro Inc tests for leaks, lock-up, concentricity, and balance to eliminate the possibilities of front seal leaks, premature bushing wear, and vibration.
- All dynamometer testing is conducted with Shift Pro Inc’s custom testing program for at least 30 minutes.
- During dynamometer testing, Shift Pro Inc transmissions are cold, hot, load, and road tested using a fully synthetic transmission fluid and filtration system.
- All wear-prone valves in the completely remanufactured valve body are restored to stringent specifications and vacuum tested to verify proper function.
- Shift Pro Inc’s quality control process includes build specification checks performed by four different specialized technicians during the remanufacturing process.
- No paperwork or registration is required with Shift Pro Inc’s warranty. Each no-hassle warranty is attached to the vehicle VIN and transferrable with ownership.
- Product might not be available in all states due to local laws.
Moveras – M00541BC Remanufactured 4L80E Automatic Transmission Assembly (Part No.M00541BC)
from
$2069.99
Moveras Remanufactured Transmissions manufactures automatic transmissions for virtually every vehicle on the road; We are committed to remanufacturing transmissions to the same standards and methodologies used for OEM transmissions; Each Moveras transmission is produced in a World Class manufacturing facility; Our entire process has been developed from scratch, utilizing LEAN manufacturing principles; Our transmissions are produced in a Clean Room environment; Every transmission is built to the same exacting standards by using a precisely documented and controlled process.
Product Features:
See More
Product Features:
- OEM-Level Quality: Each transmission is remanufactured to meet or exceed original manufacturer specifications for seamless compatibility and superior performance
- Advanced Remanufacturing Process: Each transmission is completely disassembled, and critical components are replaced or upgraded to ensure long-lasting performance
- High-Quality Torque Converter: A fully remanufactured torque converter is included, tested for leaks, lock-up functionality, and balance to enhance durability and smooth operation
- Precision Engineering: Each valve body is remanufactured to OEM specifications, ensuring proper hydraulic flow and consistent shift performance
- Dyno Testing: All Moveras transmissions are dyno-tested under real-world driving conditions to ensure reliable, consistent performance before leaving the factory
- Nationwide Limited Warranty: Every transmission comes with a comprehensive Limited Warranty, giving you confidence and peace of mind, no matter where you are on the road
Spartan – Automatic Transmission Assembly; GM RWD 4L80E 4-Spd (Part No.1661B-81)
from
$2399.00
Our remanufactured transmissions have improved torque converters included with every transmission to eliminate the possibility of front seal leaks, vibration or premature bushing wear, All torque converters are tested for leaks, lock-up, concentricity & balance. Every fully remanufactured valve body, with complete system correction & recalibration kit, is tested independently & includes updated throttle valve, manual valve, 4-spool switch valve, pressure regulator valve & governor plugs for improved shifting, lubrication & performance. All wear-prone valves are restored to stringent specifications & vacuum tested to confirm proper function. Each remanufactured transmission is hot, cold, load & simulated road testing. All remanufactured transmissions are backed by the industry’s best, no-hassle nationwide warranty(limited).
Product Features:
See More
Product Features:
- Our Remanufactured Transmissions include torque convertors, trans is completely disassembled & checked then reassembled to spec for tolerances, vacuum, seal & balance, all wear parts replaced & sim tested.
- Our Remanufactured Transmissions include torque convertors, trans is completely disassembled & checked then reassembled to spec for tolerances, vacuum, seal & balance, all wear parts replaced & sim tested.
- Transmissions are securely packaged in a recyclable container that will also protect your core on the return trip. Our nationwide warehouse network means speedy delivery.
- All of our transmissions are Dyno tested to ensure the highest standard of trouble free service and longevity.
Moveras – M01413AA Remanufactured 4L80E Automatic Transmission Assembly (Part No.M01413AA)
from
$2069.99
Moveras Remanufactured Transmissions manufactures automatic transmissions for virtually every vehicle on the road; We are committed to remanufacturing transmissions to the same standards and methodologies used for OEM transmissions; Each Moveras transmission is produced in a World Class manufacturing facility; Our entire process has been developed from scratch, utilizing LEAN manufacturing principles; Our transmissions are produced in a Clean Room environment; Every transmission is built to the same exacting standards by using a precisely documented and controlled process.
Product Features:
See More
Product Features:
- OEM-Level Quality: Each transmission is remanufactured to meet or exceed original manufacturer specifications for seamless compatibility and superior performance
- Advanced Remanufacturing Process: Each transmission is completely disassembled, and critical components are replaced or upgraded to ensure long-lasting performance
- High-Quality Torque Converter: A fully remanufactured torque converter is included, tested for leaks, lock-up functionality, and balance to enhance durability and smooth operation
- Precision Engineering: Each valve body is remanufactured to OEM specifications, ensuring proper hydraulic flow and consistent shift performance
- Dyno Testing: All Moveras transmissions are dyno-tested under real-world driving conditions to ensure reliable, consistent performance before leaving the factory
- Nationwide Limited Warranty: Every transmission comes with a comprehensive Limited Warranty, giving you confidence and peace of mind, no matter where you are on the road
Shift Pro by ETE – 4L80E Automatic Transmission Assembly (Part No.T281152)
from
$2399.99
At Shift Pro Inc, fully remanufactured transmissions go beyond the name. So, what’s in that name to start? Pro Engineering: your transmission has been re-engineered to meet or exceed OE standards for tolerances, durability, and quality. Pro Performance: upgraded components and a fully remanufactured torque converter add to enhanced durability over your transmission’s lifetime. Pro Performance: hot-, cold-, load-, and simulated road-tested on custom dynamometers, your transmission is ready to go, wherever you’re headed.
Product Features:
See More
Product Features:
- Fully tested torque converter included. Shift Pro Inc tests for leaks, lock-up, concentricity, and balance to eliminate the possibilities of front seal leaks, premature bushing wear, and vibration.
- All dynamometer testing is conducted with Shift Pro Inc’s custom testing program for at least 30 minutes.
- During dynamometer testing, Shift Pro Inc transmissions are cold, hot, load, and road tested using a fully synthetic transmission fluid and filtration system.
- All wear-prone valves in the completely remanufactured valve body are restored to stringent specifications and vacuum tested to verify proper function.
- Shift Pro Inc’s quality control process includes build specification checks performed by four different specialized technicians during the remanufacturing process.
- No paperwork or registration is required with Shift Pro Inc’s warranty. Each no-hassle warranty is attached to the vehicle VIN and transferrable with ownership.
- Product might not be available in all states due to local laws.
Moveras – M01230 Remanufactured 4L80E Automatic Transmission Assembly (Part No.M01230)
from
$2069.99
Moveras Remanufactured Transmissions manufactures automatic transmissions for virtually every vehicle on the road; We are committed to remanufacturing transmissions to the same standards and methodologies used for OEM transmissions; Each Moveras transmission is produced in a World Class manufacturing facility; Our entire process has been developed from scratch, utilizing LEAN manufacturing principles; Our transmissions are produced in a Clean Room environment; Every transmission is built to the same exacting standards by using a precisely documented and controlled process.
Product Features:
See More
Product Features:
- OEM-Level Quality: Each transmission is remanufactured to meet or exceed original manufacturer specifications for seamless compatibility and superior performance
- Advanced Remanufacturing Process: Each transmission is completely disassembled, and critical components are replaced or upgraded to ensure long-lasting performance
- High-Quality Torque Converter: A fully remanufactured torque converter is included, tested for leaks, lock-up functionality, and balance to enhance durability and smooth operation
- Precision Engineering: Each valve body is remanufactured to OEM specifications, ensuring proper hydraulic flow and consistent shift performance
- Dyno Testing: All Moveras transmissions are dyno-tested under real-world driving conditions to ensure reliable, consistent performance before leaving the factory
- Nationwide Limited Warranty: Every transmission comes with a comprehensive Limited Warranty, giving you confidence and peace of mind, no matter where you are on the road
Dorman – Transmission Drain Plug – M12-1.75 Pilot Point (Part No.090-208CD)
from
$10.49
This transmission 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:
See More
Product Features:
- Direct replacement – this transmission 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
Dorman – Drain Plug – M12-1.75 Pilot Point (Part No.65416)
from
$10.49
This transmission 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:
See More
Product Features:
- Direct replacement – this transmission 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
Dorman – Transmission Drain Plug – M12-1.75 Pilot Point (sold by each) (Part No.090-208)
from
$9.99
This transmission 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:
See More
Product Features:
- Direct replacement – this transmission 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
Upgrade your 2003 GMC W3500 Forward with Top-Quality Transmission Parts
When it comes to maintaining or upgrading your 2003 GMC W3500 Forward, nothing is more important than using high-quality OEM or aftermarket parts that you can trust. Whether you’re repairing damage to your GMC or enhancing its overall performance, Transmission Parts are key to keeping your W3500 Forward functioning at its best. At Advance Auto Parts, we offer a wide selection of 11 Transmission Parts for the 2003 GMC W3500 Forward, designed to meet your needs without breaking the bank.
From
Automatic Transmission Pan and Gasket
replacements to
Manual Transmission Parts
upgrades, we’ve got you covered with parts that fit your vehicle perfectly and ensure long-lasting performance.
Affordable Prices and Wide Selection
Shopping for Transmission Parts for any vehicle can be a hassle, especially if you’re on a budget. But with Advance Auto Parts, you can find high-quality Transmission Parts for your 2003 GMC W3500 Forward at great prices.
Our Transmission Parts inventory for this model
ranges from just $8.99 to $2,534.99, with
an average price of $800.76.
Our 11 Transmission Parts in stock come from 6 trusted brands, so you’re sure to find the right part for your 2003 GMC W3500 Forward without overspending.
Top Brands and High Customer Satisfaction
Advance Auto Parts takes pride in offering only the best brands in the automotive industry. For your 2003 GMC W3500 Forward, we stock popular OEM and aftermarket Transmission Parts from top names
like Dorman, and more.
Dorman Transmission Parts
start at just $8.99 and boast an impressive 4.2 stars average rating from customers.
With 10 customer reviews and counting, our 2003 GMC W3500 Forward Transmission Parts have a strong track record of reliability, ensuring you can trust your purchase.
Explore Related Parts and More
While you’re here, don’t forget to check out other essential categories that go hand in hand with Transmission Part upgrades. Explore related part types like Batteries and Chargers, Oil and Lubricants
and more to make sure your 2003 GMC W3500 Forward is always ready to roll. We’re committed to providing you with everything you need to keep your W3500 Forward in top shape, all in one place.
Start shopping confidently below for your 2003 GMC W3500 Forward!
Best-Selling Automatic Transmission Pan and Gaskets for 2003 GMC W3500 Forwards
Enhance the driving experience in your GMC with 4 quality Automatic Transmission Pan and Gasket components, starting at $9.99.
Dorman – Transmission Oil Pan: Direct Fit, Steel, 13.5 Quart (Part No.265-810)
from
$99.99
This replacement transmission oil pan is a direct replacement for a damaged original equipment transmission pan. Made of quality materials, it’s designed for reliable, leak-free service.
Product Features:
See More
Product Features:
- Ideal replacement – this transmission oil pan matches the fit and function of the original pan for a trouble-free replacement
- Durable construction – this transmission oil pan is made of quality materials for durability and leak-free performance
- Cost-effective solution – offers original equipment performance at competitive price
- Quality tested – this part has undergone try-on testing to ensure a quality fit
Dorman – Transmission Drain Plug – M12-1.75 Pilot Point (Part No.090-208CD)
from
$10.49
This transmission 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:
See More
Product Features:
- Direct replacement – this transmission 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
Dorman – Drain Plug – M12-1.75 Pilot Point (Part No.65416)
from
$10.49
This transmission 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:
See More
Product Features:
- Direct replacement – this transmission 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
Dorman – Transmission Drain Plug – M12-1.75 Pilot Point (sold by each) (Part No.090-208)
from
$9.99
This transmission 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:
See More
Product Features:
- Direct replacement – this transmission 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
Most Popular 2003 GMC W3500 Forward Manual Transmission Parts
Customize your GMC with 1 Manual Transmission Parts products
like Manual Transmission Shift Cables, all
priced under $300.99.
Dorman – HD Solutions – Gearshift Control Cable Assembly (Part No.924-7002)
from
$300.99
Manufactured from durable materials, this manual transmission shift linkage bushing matches the fit and function of the original bushing.
Product Features:
See More
Product Features:
- Direct replacement – this manual transmission shift linkage bushing matches the fit and function of the original part.
- Ideal solution – designed and manufactured to ensure a seamless installation
- Durable construction – manufactured from quality materials for reliable service
- Trustworthy design – backed by a company with more than 100 years of automotive aftermarket experience
Top Picks for 2003 GMC W3500 Forward Transmission Connectors
Upgrade GMC W3500 Forwards with top-quality Transmission Connectors parts, including 1 OEM and aftermarket selections for your 2003 model.
Dorman – Transmission Line Connector with 3/8 Tube X 1/4-18 In. Thread (Part No.800-604)
from
$8.99
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:
See More
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
In-Demand Automatic Transmission Parts for 2003 GMC W3500 Forwards
Select from 4 premium Automatic Transmission Parts parts for your 2003 GMC W3500 Forward, with prices ranging from $2,069.99 to $2,534.99.
Premium Drive Train – Premium Remanufactured Automatic Transmission (Part No.T4L80E5701P)
from
$2534.99
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 necessary. All friction components are replaced with upgraded heavy-duty parts. Drum assemblies are air-checked and side play is measured to ensure proper clearance. All seals, O-rings, and gaskets are replaced. All solenoids are tested and replaced if they do not pass duty-cycle specifications. Internal wiring harnesses are inspected and replaced as necessary. Valve bodies are disassembled, cleaned, and measured for wear. Valves and valve bores are inspected, and bores are machined as required. Completed valve bodies are tested for proper operation prior to dyno testing.
Product Features:
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Product Features:
- Each transmission undergoes rigorous dyno testing to verify precise hydraulic pressures, smooth shifting, torque converter function, and park lock operation-guaranteeing reliable, trouble-free driving.
- Every transmission is fully disassembled, cleaned, and rebuilt using 100% upgraded heavy-duty seals, friction components, solenoids, and torque converter parts to ensure maximum durability and performance.
- Drum assemblies are air checked and side play is checked to assure proper clearance. 100% of seals, oft.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.
- 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 oft.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
Shift Pro by ETE – 4L80E Automatic Transmission Assembly (Part No.T281152)
from
$2399.99
At Shift Pro Inc, fully remanufactured transmissions go beyond the name. So, what’s in that name to start? Pro Engineering: your transmission has been re-engineered to meet or exceed OE standards for tolerances, durability, and quality. Pro Performance: upgraded components and a fully remanufactured torque converter add to enhanced durability over your transmission’s lifetime. Pro Performance: hot-, cold-, load-, and simulated road-tested on custom dynamometers, your transmission is ready to go, wherever you’re headed.
Product Features:
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Product Features:
- Fully tested torque converter included. Shift Pro Inc tests for leaks, lock-up, concentricity, and balance to eliminate the possibilities of front seal leaks, premature bushing wear, and vibration.
- All dynamometer testing is conducted with Shift Pro Inc’s custom testing program for at least 30 minutes.
- During dynamometer testing, Shift Pro Inc transmissions are cold, hot, load, and road tested using a fully synthetic transmission fluid and filtration system.
- All wear-prone valves in the completely remanufactured valve body are restored to stringent specifications and vacuum tested to verify proper function.
- Shift Pro Inc’s quality control process includes build specification checks performed by four different specialized technicians during the remanufacturing process.
- No paperwork or registration is required with Shift Pro Inc’s warranty. Each no-hassle warranty is attached to the vehicle VIN and transferrable with ownership.
- Product might not be available in all states due to local laws.
Spartan – Automatic Transmission Assembly; GM RWD 4L80E 4-Spd (Part No.1661B-81)
from
$2399.00
Our remanufactured transmissions have improved torque converters included with every transmission to eliminate the possibility of front seal leaks, vibration or premature bushing wear, All torque converters are tested for leaks, lock-up, concentricity & balance. Every fully remanufactured valve body, with complete system correction & recalibration kit, is tested independently & includes updated throttle valve, manual valve, 4-spool switch valve, pressure regulator valve & governor plugs for improved shifting, lubrication & performance. All wear-prone valves are restored to stringent specifications & vacuum tested to confirm proper function. Each remanufactured transmission is hot, cold, load & simulated road testing. All remanufactured transmissions are backed by the industry’s best, no-hassle nationwide warranty(limited).
Product Features:
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Product Features:
- Our Remanufactured Transmissions include torque convertors, trans is completely disassembled & checked then reassembled to spec for tolerances, vacuum, seal & balance, all wear parts replaced & sim tested.
- Our Remanufactured Transmissions include torque convertors, trans is completely disassembled & checked then reassembled to spec for tolerances, vacuum, seal & balance, all wear parts replaced & sim tested.
- Transmissions are securely packaged in a recyclable container that will also protect your core on the return trip. Our nationwide warehouse network means speedy delivery.
- All of our transmissions are Dyno tested to ensure the highest standard of trouble free service and longevity.
Moveras – M00541BC Remanufactured 4L80E Automatic Transmission Assembly (Part No.M00541BC)
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$2069.99
Moveras Remanufactured Transmissions manufactures automatic transmissions for virtually every vehicle on the road; We are committed to remanufacturing transmissions to the same standards and methodologies used for OEM transmissions; Each Moveras transmission is produced in a World Class manufacturing facility; Our entire process has been developed from scratch, utilizing LEAN manufacturing principles; Our transmissions are produced in a Clean Room environment; Every transmission is built to the same exacting standards by using a precisely documented and controlled process.
Product Features:
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Product Features:
- OEM-Level Quality: Each transmission is remanufactured to meet or exceed original manufacturer specifications for seamless compatibility and superior performance
- Advanced Remanufacturing Process: Each transmission is completely disassembled, and critical components are replaced or upgraded to ensure long-lasting performance
- High-Quality Torque Converter: A fully remanufactured torque converter is included, tested for leaks, lock-up functionality, and balance to enhance durability and smooth operation
- Precision Engineering: Each valve body is remanufactured to OEM specifications, ensuring proper hydraulic flow and consistent shift performance
- Dyno Testing: All Moveras transmissions are dyno-tested under real-world driving conditions to ensure reliable, consistent performance before leaving the factory
- Nationwide Limited Warranty: Every transmission comes with a comprehensive Limited Warranty, giving you confidence and peace of mind, no matter where you are on the road
Most Sold 2003 GMC W3500 Forward Gear Shifters and Cables
Explore our best-selling GMC parts for the 2003 W3500 Forward among 1 OEM and aftermarket options starting from $131.99.
ATP – Manual Transmission Shift Cable (Part No.Y-1555)
from
$131.99
Manual shift cables connect the transmission selector lever/shifter to the transmission linkage. Old cables can bind, break, or just become sluggish. The best repair is to replace the old cable with a new one. Pioneer Manual shift cables are designed to fit and function just like the original part to ensure durability and long life.
Product Features:
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Product Features:
- Manufactured to OE specifications to restore proper operation.
- High tensile strength steel inner cable provides durability.
- Protective polymer housing protects cable from debris and abbrassion, allowing for smooth operation.
- Includes needed cable ends, brackets and grommet (where applicable) for proper repair.
Top-Rated Transmission Parts Brands For Your 2003 GMC W3500 Forward
Shop for the best-rated brands offering Transmission Parts and other products for your 2003 GMC W3500 Forwards. Below you’ll find some of our best rated Transmission Parts from Dorman, and more. Transmission Parts from these brands that fit a 2003 W3500 Forward start at just $8.99 and are rated as high as 4.2 stars. OEM and aftermarket Transmission Parts don’t get more top quality, durable, and affordable than from the brands below.
Popular Dorman 2003 GMC W3500 Forward Transmission Parts
When it comes to maintaining or upgrading your 2003 GMC W3500 Forward, using quality Transmission Parts is essential to ensure durability and a perfect fit. Dorman ticks all of those boxes. We offer a wide selection of Dorman Transmission Parts, specifically designed for the 2003 GMC W3500 Forward. With over 1 Dorman brand Transmission Parts in stock, you’re sure to find what you need. The prices for these top-notch parts start as low as $8.99. Plus, with over 9 customer reviews and an average rating of 4.2 stars, you can trust that our Dorman Transmission Parts will get the job done right. Choose Advance Auto Parts for reliability, quality, and expert-approved parts that keep your vehicle running strong.
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$8.99
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Transmission Line Connector with 3/8 Tube X 1/4-18 In. Thread
“Fit perfectly in my 4L60”
FAQs for 2003 GMC W3500 Forward Transmission Parts
Which Transmission Parts are best-sellers for 2003 GMC W3500 Forwards?
Out of 11 Transmission Parts that fit 2003 GMC W3500 Forwards, the following parts are the top sellers:
- Transmission Drain Plug – M12-1.75 Pilot Point (11909089) – $10.49
- Drain Plug – M12-1.75 Pilot Point (11148817) – $10.49
- Transmission Drain Plug – M12-1.75 Pilot Point (sold by each) (11224129) – $9.99
What’s the price range for 2003 GMC W3500 Forward Transmission Parts?
Transmission Part prices for the 2003 GMC W3500 Forward start at $8.99 and go up to $2,534.99 for the most premium parts.
What’s the average price of a Transmission Part for a 2003 GMC W3500 Forward?
The average price for Transmission Parts for the 2003 GMC W3500 Forward is $800.76. Keep in mind the variety of part types within our Transmission Part category so you are likely to find a wide range of prices across a variety of parts and components.
Does Advance Auto Parts sell Transmission Parts for other GMC W3500 Forward model years?
What are the cheapest Transmission Parts for my 2003 GMC W3500 Forward?
The cheapest 2003 GMC W3500 Forward Transmission Parts we carry in stock are:
- Transmission Line Connector with 3/8 Tube X 1/4-18 In. Thread (9110042) – $8.99
- Transmission Drain Plug – M12-1.75 Pilot Point (sold by each) (11224129) – $9.99
- Transmission Drain Plug – M12-1.75 Pilot Point (11909089) – $10.49
- Drain Plug – M12-1.75 Pilot Point (11148817) – $10.49
- Transmission Oil Pan: Direct Fit, Steel, 13.5 Quart (10055006) – $99.99
What are the top-rated Transmission Parts that fit the 2003 GMC W3500 Forward?
Out of 10 reviews by customers, our 2003 GMC W3500 Forward Transmission Parts have an average customer rating of . These are some of the highest-rated Transmission Part types for the 2003 GMC W3500 Forward and their top-rated products:
- Automatic Transmission Pan and Gaskets
- Transmission Oil Pan: Direct Fit, Steel, 13.5 Quart (10055006) – $99.99
- Transmission Connectors
- Transmission Oil Pan: Direct Fit, Steel, 13.5 Quart (10055006) – $99.99
What types of Transmission Parts do you sell for my 2003 GMC W3500 Forward?
As of 3/1/26, these are some of the most in-demand types of Transmission Parts for a 2003 GMC W3500 Forward:
Can I get help with 2003 GMC W3500 Forward Transmission Part orders?
Contact our customer support team, by chat or phone, through the help desk page, where you can find instant answers about GMC Transmission Parts and more.
What is your return policy for GMC W3500 Forward Transmission Parts?
Advance Auto Parts keeps returns simple. For new GMC W3500 Forward Transmission Parts and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.
