Transmission for 2003 GMC Sierra 1500 HD with 4.3L, 4x2, AT, 4.3L, 4x2, Regular Cab

Transmission for 2003 GMC Sierra 1500 HD with 4.3L, 4x2

Sierra 1500 HD

Transmission Locator

2003 GMC Sierra 1500 HD Automatic Transmission

4L80-E 4WD / AWD 4 speed 4L80-E, 4WD / AWD, 4 speed Transmission for 2003 GMC Sierra 1500 HD. Transmission for sale

4L80-E Transmission 4WD / AWD 4 speed for 2003 GMC Sierra 1500 HD 6.0

Bell Housing Included

Billet Torque Converter

Casing Material

Dyno Tested

Flex Plate Included

Radiator Included

Transmission External Cooler Included

Transmission Fluid Included

Transmission Fluid Type

Transmission Speeds

Transmission Type

Conversion Harness Adapter Included

Grade Type

Heat Exchanger Included

Length

Return Cooler Bypass Filter Included

Tag Id

Thermal Bypass Valve Included

Throttle Cable Included

Torque Converter Included

Transmission Manufacturer Code

Transmission Oil Cooler Replacement Required

Warranty Requires

Pressure Switch Included

For expert assistance and technical support on Transmission Locator Remanufactured Transmissions, please contact Transmission Locator directly. Their knowledgeable team is ready to help with any inquiries, installation guidance, or troubleshooting you may need.  Transmission Locator Technical Support  Phone: 1-877-531-2723 Ext 2 (Toll-Free)

4L80E Remanufactured Automatic Transmission

Advanced Remanufacturing Process: Each transmission is completely disassembled, and critical components are replaced or upgraded to ensure long-lasting performance

Dyno Testing: All Transmission Locator transmissions are dyno-tested under real-world driving conditions to ensure reliable, consistent performance before leaving the factory

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

Nationwide Warranty: Every transmission comes with a comprehensive warranty, giving you confidence and peace of mind, no matter where you are on the road

OEM-Level Quality: Each transmission is remanufactured to meet or exceed original manufacturer specifications for seamless compatibility and superior performance

Precision Engineering: Each valve body is remanufactured to OEM specifications, ensuring proper hydraulic flow and consistent shift performance

Transmission Locator 4L80E Remanufactured Automatic Transmission

Transmission Locator 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 Transmission Locator 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.

Transmission Locator M00046AC Remanufactured 4L80E Automatic Transmission Assembly

Flexplate Included

Transmission Oil Cooler Included

Transmission Locator Pro 4L80E Remanufactured Automatic Transmission

Transmission Locator Pro M00046ACP Remanufactured 4L80E Automatic Transmission Assembly

Tail Housing Included

Transfer Case Assembly Included

Lockup

Output Shaft Yoke Included

Shifter Included

Valve Body Recalibrated

Valve Body Style

Pan Mounting Hole Quantity

Prop 65 Y/N

Prop 65 – Long Label

Radiator Replacement Required

Premium Remanufactured Automatic Transmission

Professionally remanufactured automatic transmission assembly with all new seals, gaskets, and friction components. Precision inspected, rebuilt to OEM specs, and dyno tested for smooth shifting and lasting reliability.

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.

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. All of friction components are replaced with upgraded heavy duty parts. Drum assemblies are air checked and side play is checked to assure proper clearance. All of seals, o’rings and gaskets are replaced. All 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. All 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 test.  Transmission park locking mechanism is checked during dyno test. (where applicable). [Torque Converter] All of converters are dynamic balanced  All of pumps are furnaced brazed. All new bearings and o’rings. All new springs and rollers in stator. All new thrust washers. All new friction liners in overdrive lockup converters. Converter endplay and hub/pump runout and diameter is checked

Average R&R

Bell Housing

Cooler Lines

Cooler Replacement Required

Neutral Safety Switch

Output Type

Pan Bolts

Shift Type

Transmission Fluid

Bellhousing Bolt Position

Forward Shift Position Quantity

Remove And Replace Time

Reverse Shift Position Quantity

Transmission Extension Housing Included

Transmission Fluid Capacity

Transmission Oil Cooler Fitting Type

• Fully remanufactured valve body, with complete system correction and recalibration kit, improves pressure control and shift quality.
• Upgraded actuator feed limit valve prevents missing shifts and premature transmission failure.
• Upgraded 34 element intermediate sprag increases holding capacity.
• All-new shift solenoids ensure positive shifting.
• EPC solenoid is tested separate from the transmission to confirm precise pressure control.
• Updated force motor for improved pressure control.
• Updated pressure regulator prevents overly high pressure.
• Case connector is updated to the latest design on pre-1994 versions, and a vehicle harness pigtail is provided to address connection issues with the early design.
• Fully remanufactured torque converter is tested for leaks, lock-up, concentricity, and balance. Upgrades exceed OE requirements and eliminate the possibilities of front seal leaks, premature bushing wear, and vibration.
• No Walkout rear case bushing is installed, addressing an OE flaw, to prevent case and output shaft damage.
• All-new custom-spec bushings to improve internal fluid flow control and pressures.
• Every transmission is cold-and hot-tested using a proprietary dynamometer testing program that includes fully synthetic automatic transmission fluid and a filtration system.

4L80-E RWD 4 speed 4L80-E, RWD, 4 speed Transmission for 2003 GMC Sierra 1500 HD. Transmission for sale

4L80-E Transmission RWD 4 speed for 2003 GMC Sierra 1500 HD 6.0

Transmission Locator M00045BA Remanufactured 4L80E Automatic Transmission Assembly

Transmission Locator Pro M00045BA Remanufactured 4L80E Automatic Transmission Assembly

Transmission Locator Pro M00045AAP Remanufactured 4L80E Automatic Transmission Assembly

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AM General

Acura

Airstream

Audi

Buick

Cadillac

Chevrolet

Chinook Motor Coach

Chrysler

Coach House

Coachmen

Damon

Dodge

Dynamax Corp

Eagle

Econoline

Entegra Coach

Fiat

Fleetwood

Ford

Forest River

Four Winds International

Freightliner

Gulf Stream

Holiday Rambler

Honda

Hummer

Hymer

Hyundai

Infiniti

Isuzu

Itasca

Jaguar

Jayco

Jeep

Land Rover

Leisure Travel

Lexus

Lincoln

Mazda

Mercedes-Benz

Mercury

Mini

Mitsubishi

Mobility Ventures

Monaco Coach

National RV

Newmar

Nexus

Nissan

Oldsmobile

Phoenix

Pleasure-Way

Plymouth

Pontiac

R-Vision

Renault

Saab

Safari

Saturn

Scion

Starcraft Bus

Subaru

Suzuki

Thor Motor Coach

Tiffin

Toyota

Volkswagen

Volvo

Winnebago

Workhorse

Workhorse Custom Chassis

Acadia

Acadia Limited

C1500

C1500 Suburban

C2500

C2500 Suburban

C3500

C3500HD

Caballero

Canyon

Envoy

Envoy XL

Envoy XUV

G1500

G2500

G3500

Jimmy

K1500

K1500 Suburban

K2500

K2500 Suburban

K3500

P3500

R1500

R1500 Suburban

R2500

R2500 Suburban

R3500

S15 Jimmy

Savana 1500

Savana 2500

Savana 3500

Savana 4500

Sierra

Sierra 1500

2003 GMC Sierra 1500 HD Automatic Transmission

Options: AT, 4.3L, 4x2, Regular Cab

2003 GMC Sierra 1500 HD Automatic Transmission