2003 GMC Sierra Trailer Hitches
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CURT®Over-Bed Folding Ball Gooseneck HitchGMC Sierra 2003, Over-Bed Folding Ball Gooseneck Hitch by CURT®. CURT gooseneck hitches are a premium option in the heavy-duty towing industry, but they are only one of the members in the heavyweight tag team that is CURT gooseneck...Flip-and-store ball keeps the truck bed free of obstructionsT-handle allows for easy operation$201.91Save: 5%$191.81 - Draw-Tite®Gooseneck Rail KitGMC Sierra 2003, Gooseneck Rail Kit by Draw-Tite®. You can easily convert the flip over gooseneck hitch to a smooth bed in mere seconds. Just rotate the handle and flip the ball over. When an ordinary hitch ball is always in the way,...Superior performance in cross windsEasy hookup$382.36 - $394.40
- CURT®20" USCAR Wiring Extension Harness (USCAR to USCAR)GMC Sierra 2003, 20" USCAR Wiring Extension Harness (USCAR to USCAR) by CURT®. A CURT custom wiring connector (sometimes called a T-connector) is a simple, plug-and-play electrical device that eliminates the need for cutting, splicing...Creates a safe, reliable connection between your tow vehicle and your trailerTested in-house for safety$25.84Save: $1.30 (5%)$24.54
- CURT®Custom Wiring ConnectorGMC Sierra 2003, Custom Wiring Connector by CURT®. Output Type: 4-Way Flat. Plugs into USCAR socket to provide a 7-way RV blade connector. A CURT custom wiring connector (sometimes called a T-connector) is a simple, plug-and-play...Creates a safe, reliable connection between your tow vehicle and your trailerTested in-house for safety$28.69 - $29.43Save: 5%$27.25 - $27.96
- CURT®Replacement USCAR PlugGMC Sierra 2003, Replacement USCAR Plug by CURT®. 7-Way Vehicle End with 24" Bonded Wire. Material: Plastic. A CURT custom wiring connector (sometimes called a T-connector) is a simple, plug-and-play electrical device that eliminates...Creates a safe, reliable connection between your tow vehicle and your trailerTested in-house for safety$17.61Save: 5%$16.73
- CURT®T-ConnectorGMC Sierra 2003, T-Connector by CURT®. 2-wire System, Location: T3. A CURT custom wiring connector (sometimes called a T-connector) is a simple, plug-and-play electrical device that eliminates the need for cutting, splicing and...Creates a safe, reliable connection between your tow vehicle and your trailerTested in-house for safety$15.28 - $40.16Save: 5%$14.51 - $38.15
- CURT®5th Wheel and Gooseneck Wiring HarnessGMC Sierra 2003, 5th Wheel and Gooseneck Wiring Harness by CURT®. There is nothing like the luxury and power that go along with heavy-duty towing. 5th wheel RVs offer a deluxe, home-away-from-home experience unlike any other, while...Provides an extra connector for plugging in your trailer wiringIncludes a right-angle plug for easy installation$72.95 - $117.95
- Dorman®Trailer Hitch Electrical Connector PlugGMC Sierra 2003, Trailer Hitch Electrical Connector Plug by Dorman®. 7 Way Terminals. 7 Way Terminals Connector. Restore the brake lights and turn signal on your trailer to proper operation with Dorman’s Trailer Hitch Plug. The Plug...Hitch Plug cap flips over to prevent corrosion and other damageDirect replacement for a proper fit$27.14
- CURT®OEM Car Socket for 7-Way RV BladeGMC Sierra 2003, OEM Car Socket for 7-Way RV Blade by CURT®. Plugs into USCAR socket to provide a 7-way RV blade connector. Plugs into USCAR socket to provide a 7-way RV blade connector. There are several different types of connectors...Splices into the vehicle’s wiring to provide a connection for a trailer plugProudly made in Wisconsin, from start to finish$15.45 - $16.71Save: 5%$14.68 - $15.87
- Tekonsha®T-One ConnectorGMC Sierra 2003, T-One Connector by Tekonsha®. One-year warranty. 2 Wire System. T-One Connectors require no splicing of vehicle wires. Simply locate your vehicles wiring harness connector, unplug the connection and insert the T-One..."Factory" appearanceQuick and easy installation$52.65
- Standard®Trailer Connector KitGMC Sierra Denali 2003, Trailer Connector Kit by Standard®. Standard is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive prices and the highest reputation for...Committed to being the best, Standard Engine Management manufactures and distributes a full line of engine management related products, including ignition and emission parts, on-board computers, ignition wires, battery cables and fuel system parts.Standard trailer connectors and accessories feature a robust design for installation confidence in every box$35.66 - $108.20
- Standard®Trailer Connector KitGMC Sierra 2003, Trailer Connector Kit by Standard®. Standard is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive prices and the highest reputation for integrity...Committed to being the best, Standard Engine Management manufactures and distributes a full line of engine management related products, including ignition and emission parts, on-board computers, ignition wires, battery cables and fuel system parts.Standard trailer connectors and accessories feature a robust design for installation confidence in every box$35.66 - $108.20
- CURT®Dual-Output Connector with Backup AlarmGMC Sierra 2003, Dual-Output Connector with Backup Alarm by CURT®. Plugs Into Round Uscar Socket. Provides a 7-way RV blade, 4-way flat socket and backup alarm. Whether you're a contractor on your way to the jobsite or just a casual...Splices into the vehicle’s wiring to provide a connection for a trailer plugProudly made in Wisconsin, from start to finish$32.37Save: 5%$30.75
- ACDelco®Professional™ Inline to Trailer Wiring Harness ConnectorGMC Sierra Denali 2003, Professional™ Inline to Trailer Wiring Harness Connector by ACDelco®. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform better than advertised. Perfect...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$35.45 - $62.09Save: 15%$30.13 - $52.77
- ACDelco®Professional™ Inline to Trailer Wiring Harness ConnectorGMC Sierra 2003, Professional™ Inline to Trailer Wiring Harness Connector by ACDelco®. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform better than advertised. Perfect for...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$35.45 - $62.09Save: 15%$30.13 - $52.77
- CURT®Heavy-Duty Replacement OEM 7-Way RV Blade SocketGMC Sierra 1500 / 2500 HD 2003, Heavy-Duty Replacement OEM 7-Way RV Blade Socket by CURT®. A CURT connector provides a reliable connection for your trailer wiring, using an industry-standard format, such as a 4-way flat, 6-way round or...Proudly made in Wisconsin, from start to finishBacked by a one-year parts warranty$17.49Save: $0.87 (5%)$16.62
- Husky Towing®Vehicle End Trailer Wiring ConnectorGMC Sierra 2003, Vehicle End Trailer Wiring Connector by Husky Towing®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship....Perfect blend of leading innovations and superior workmanshipManufactured to offer high value and everlasting reliability$7.30 - $58.52
- Standard®Intermotor™ Trailer Connector KitGMC Sierra 2003, Intermotor™ Trailer Connector Kit by Standard®. Standard is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive prices and the highest reputation...The Intermotor™ brand has built its reputation by engineering and distributing a full line of genuine import parts – parts that are unrivaled for quality, original look, fit, form & function, as well as coverage.Standard trailer connectors and accessories feature a robust design for installation confidence in every box$55.30 - $57.33
- Standard®Intermotor™ Trailer Connector KitGMC Sierra Denali 2003, Intermotor™ Trailer Connector Kit by Standard®. Standard is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive prices and the highest...The Intermotor™ brand has built its reputation by engineering and distributing a full line of genuine import parts – parts that are unrivaled for quality, original look, fit, form & function, as well as coverage.Standard trailer connectors and accessories feature a robust design for installation confidence in every box$55.30 - $57.33
- Standard®Trailer ConnectorGMC Sierra 1500 / 2500 / 2500 HD / 3500 2003, Trailer Connector by Standard®. For over 100 years, professional technicians have trusted Standard® to replace the failed OE part. Standard® manufacturers the highest-quality,...Designed with your specific vehicle in mindMeticulously crafted for an exact fit$24.14 - $32.22
- Tow Ready®5th Wheel Adapter HarnessGMC Sierra 2003, 5th Wheel Adapter Harness by Tow Ready®. One-year warranty. Allows remote wiring in pickup beds or other hard to access areas when towing a fifth wheel or gooseneck trailer, using an OEM USCAR connector. Features...Plug and Play T-harnesses to connect to vehicle wiringTrailer wiring connectors, for both truck and trailer$118.19 - $148.06
- Roadmaster®Baseplate BracketGMC Sierra 2003, Baseplate Bracket by Roadmaster®. Install time: 2 hours. This superior product is perfect to make your trailer towing experience safe and convenient. Designed to meet the highest quality standards, it is second to none...Designed to safely and efficiently haul your loadsMade from the highest quality materials$550.00
- CURT®Brake Control Harness with Quick PlugGMC Sierra 2003, Brake Control Harness with Quick Plug by CURT®. Connects any CURT brake control to specific GM trucks and others. It takes a lot of power to stop a moving trailer, especially when that trailer is hauling livestock,...Precisely welded for a perfect fit and functionProtected by an industry-leading, dual-coat finish - inside and out$14.52 - $18.11Save: 5%$13.80 - $17.20
- CURT®TriFlex™ Proportional Brake ControlGMC Sierra 2003, TriFlex™ Proportional Brake Control by CURT®. Compatible with anti-lock brakes and cruise control, operates 2-8 brakes, automatic leveling and calibration. Automatically adjusts brake output when going up or down a...Can be mounted at various angles on your vehicle's dashComes with a digital display that shows output settings$101.01Save: 5%$96.30
- Tekonsha®2-Plug Brake Control Wiring AdapterGMC Sierra 2-Plug 2003, 2-Plug Brake Control Wiring Adapter by Tekonsha®. Tekonsha 2-Plug units are designed for brake controls that have a wiring port built into the back of the unit. Simply plug the brake control end of the wiring...$21.89 - $25.30
- CURT®Assure™ Proportional Trailer Brake Controller with Dynamic ScreenGMC Sierra 2003, Assure™ Proportional Trailer Brake Controller with Dynamic Screen by CURT®. Staying safe on the road, protecting your cargo and maximizing the life of your vehicle and trailer requires a sophisticated brake control,...Pressure-sensitive manual override button for precise braking powerLarge, high-quality 1-1/2" OLED screen displays full text readoutMail-in RebateGet $25 prepaid card back - Details$199.95
- CURT®Echo™ Mobile Tri-Axis Inertia Brake ControlGMC Sierra 2003, Echo™ Mobile Tri-Axis Inertia Brake Control by CURT®. Operates 2-4 trailer brakes at a time (1-2 axles). Patent pending. The Echo™ brake control is truly a brake control for the modern age. It plugs into your...Stores multiple vehicle-trailer profiles for ease of useEngineered to provide zero-tool, plug-and-play install$289.95Save: 28%$209.95
- CURT®Spectrum™ Tri-Axis Inertia Brake ControlGMC Sierra 2003, Spectrum™ Tri-Axis Inertia Brake Control by CURT®. The CURT Spectrum™ trailer brake controller gives you powerful, precise braking operation in an extremely simple and subtle design inside your vehicle. It features...Controls all brake settings with a simple push-button rotary knobEasily accessible manual override with the press of a button$239.95
- CURT®Echo™ Under-Dash Trailer Brake ControllerGMC Sierra 2003, Echo™ Under-Dash Trailer Brake Controller by CURT®. The Echo™ under-dash trailer brake controller is truly a brake control for the modern age. It plugs into your vehicle and wirelessly connects to your smartphone,...Bluetooth connection to control all brake settings from your smartphoneCustom-designed app monitors brake activity and sends status updates$264.95
- CURT®5-1/2" Drop Ball MountUniversal 5-1/2" Drop Ball Mount by CURT®. When you demand more from your towing equipment, CURT heavy-duty ball mounts answer the call. For towing those especially heavy loads and bulky trailers, you need a ball mount that knows how to...$219.95 - $289.95
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2003 GMC Sierra Towing & Hitches Reviews
1 review
Looks Great and Very Heavy Duty
Draw-Tite® 41944 - Class 5 Ultra Frame Trailer Hitch with 2" Receiver Opening (13000/1950 Weight Capacity)Posted by Nathan (Flushing, MI) / March 01, 20142003 GMC Sierra
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