Truck / SUV
Jeep®
Restoration
Stock Replacement
Late Model Muscle
Tools
Gifts, Clothing, & More
Circle Track
Street Rod
Powersports
Paint & Body
Marine
Jr Dragster
Availability
2003 GMC YUKON XL 1500 Parts and Accessories
Showing In Stock Items. Show All 766 Items.
Optima RedTop Starting 12-Volt Batteries
Optima RedTop Starting 12-volt batteries are the ultimate power source for cars, trucks, SUVs, hot rods, and other high-performance vehicles. They're engineered with unique Spiralcell technology, delivering a stronger burst of ignition power, while extending the battery life up to three times longer than conventional models. Maintenance-free RedTop AGM batteries are sealed, leak-proof, and resistant to vibrations—so you can mount them anywhere and in virtually any position on your vehicle. Order the Optima battery designed for your application, and expect a perfect start every time.
( 1532 )
$279.99
—
$319.99
HP Tuners VCM Suite MPVI4 Credit Pro Packages
HP Tuners Introduces VCM Suite MPVI4 Credit Pro packages, the latest evolution of their industry-leading OBDII interface. Built for professionals and enthusiasts alike, the computer programmers connect your vehicle to VCM Suite software (5.2+) for faster, smarter, and more powerful tuning and diagnostics than ever before. With upgraded hardware, expanded connectivity, and future-ready Wi-Fi capabilities, the MPVI4 redefines what's possible in performance calibration and data acquisition. Models are available with 0, 2, 4, 6, or 8 credits. HP Tuners VCM Suite MPVI4 Credit Pro packages feature: * Improved standalone logging: the most powerful device yet, capable of delivering standalone logging performance on par with VCM scanner and a wired connection * Upgraded hardware architecture: New internal processor for improved data throughput and flashing performance; 30x more memory than previous generation MPVI3 * High-speed USB-C connectivity: Faster, more reliable communication with your PC and vehicle * Bluetooth 5.2: Seamless wireless connection for scanning, logging, and TDN support * Wi-Fi ready (future update): Wireless VCM Suite connectivity coming soon * Enhanced storage and efficiency: Increased onboard memory for robust logging sessions * Improved OBDII fitment: A revised, tapered design means a more secure connection and better compatibility with even more makes/models * Built-In Pro feature set: Standard on every MPVI4, enabling standalone data logging and external sensor integration with PROLINK+ * RGB status LEDs: Clear visual indicators for power, connection, and activity status * Cross-Platform Compatibility: Works with VCM Suite (5.2+), TrackAddict, and RaceRender
( 5 )
$399.99
—
$499.97
Optima YellowTop Deep-Cycle 12-Volt Batteries
Optima YellowTop Deep-Cycle 12-volt batteries are high-performance, dual-purpose power sources. They're great for applications requiring repetitive amperage drain and quick recharging—like trucks with winches, commercial or public safety fleets, and vehicles loaded with electronics and accessories. YellowTops also power forklifts, tractors, and other heavy equipment. The maintenance-free AGM batteries deliver premium ignition starts, while sustaining high power levels even when system loads exceed the alternator output. Optima deep-cycle models are sealed, spill-proof, and can be mounted in most any position. They are far more resistant to vibrations than standard batteries, and will perform up to three times longer. For consistent power and faster recharges, order the YellowTop designed for your needs.
( 418 )
$319.99
—
$329.99
Yukon Gear & Axle Dura Grip Positraction Carriers
Yukon Gear & Axle Dura Grip positraction carriers offer great traction and strength, and yet are not overly aggressive for the streets. These nodular iron or steel replacements are 4-spring, Raybestos composite, clutch-style, limited-slip carriers—with internal gears machined from forged 4320 steel with stronger teeth. Assembled in the USA, the Yukon differential carriers are rebuildable, allowing for repairs or modifications without buying a new unit. They're available for fitment with nearly two dozen axle models. What are you using to transfer power? Choose smooth operation with strong lockup abilities to transfer torque—benchmarks of the Yukon Gear & Axle Dura Grip positraction carriers.
( 140 )
$394.00
On Sale
Edge Insight CTS3 Monitors
Edge Insight CTS3 monitors are the most comprehensive, state-of-the-art, multi-gauge touch screen display on the market. This third generation design is faster and more capable than ever. A simple installation that just plugs into an OBDII port and works on most domestic gas and diesel vehicles. They are the perfect tool for those who want to monitor their vehicle's performance and prefer not to program their vehicle--or for those who already have significant performance upgrades and want to safely monitor their vehicle's performance. Edge Insight CTS3 features include: * 5 in. full color, 720P high-resolution, swipe screen * 1 GB of on-board Ram * High-speed data logging export * Test and track performance runs such as 0 to 60 mph and 1/4 mile * Log, graph, and export parameters to track for improved performance * Set audible and visual alert notifications when certain parameters or temperatures are met * Multiple shift-on-the-fly performance tuning settings with EAS * Custom color mixer for gauge arcs, needles, and backgrounds * Multiple gauge screen layouts * Fully customizable backgrounds * One-touch easy menu navigation * Notification center * Switch between US or metric units of measure * Displays dozens of parameters * Light sensitivity meter to dim screen as ambient light decreases * Wi-Fi update-able * Backup camera adaptable
( 23 )
$511.95
$459.95
On Sale
Summit Bucks
Mishimoto Oil Cooler Kits
Enthusiasts who push their high performance cars to the limit understand the importance of keeping their oil temperatures low to prevent damage, or even seizure of the engine. Mishimoto oil cooler kits are designed to extend the life of your engine by ensuring that your essential high-wear engine components, such as piston rings, skirts, and cam bearings, are sufficiently lubricated with cooler oil. The kits include a durable aluminum oil cooler, stainless steel braided hose lines, fittings, and all necessary adapters. Models are also available to cool transmission oil/fluid. Order the universal or vehicle-specific cooler that's best suited for your application.
( 47 )
$396.95
Auto Metal Direct Hoods
Auto Metal Direct hoods are manufactured from steel and are fully coated with EDP to keep the hoods looking great on your ride for a long time. So, if your ride's hood has rust, dents, body filler, or hood scoop holes, just replace it with a brand new, factory-style hood from Auto Metal Direct. All underside bracing and brackets are faithful reproductions of the originals to offer an exceptional fit, authentic look, and value to your vehicle. Don't be fooled by cheap reproductions--demand AMD!
( 639 )
$450.50
On Sale
DiabloSport inTune i3 Platinum Computer Programmers
DiabloSport inTune i3 Platinum computer programmers come pre-loaded with industry-best Diablo tunes created by their experienced, professional calibrators. They too, are performance enthusiasts addicted to horsepower and racing—and they appreciate the need for custom tunes to take their vehicles to the next level with additional modifications. inTune i3 Platinum units will get your ride "dialed-in," whether you've added a cam, headers, a supercharger, or power-adder. The i3 performance programmers work hand-in-hand with CMR (Chip Master Revolution), allowing you (and the tuning shop of your choice) to tune specifically for your aftermarket modification—from there, the sky is the limit! You've made a significant investment in premium parts for your vehicle. Now let the DiabloSport inTune i3 Platinum computer programmers tie all the ingredients together to make your ride stand out! Order the model designed for your vehicle application.
( 150 )
$475.95
$427.95
Powermaster High-Amp Alternators
With modern automotive accessories, such as audio/video equipment, navigation systems, aftermarket lights, and other electrical components, the need for higher amperage alternators has increased. Powermaster has responded to this need with these high-amp alternators. They're available in several finishes to suit your style and performance needs. Powermaster high-amp alternators feature: * High output with excellent idle performance * Hand-wound, custom-designed stators * Heavy-duty regulators and rectifiers * Gold plated battery post for better electrical connections * Proof of performance tags
( 122 )
$334.99
—
$416.99
On Sale
B&M Tork Master Torque Converters
Tork Master converters are B&M's most affordable performance torque converters. They feature precision pump drive tubes and are pressure tested, fully balanced, and ready to install. The Tork Masters are excellent all-around performance street converters. They are not recommended for big block or supercharged applications.
( 184 )
$460.95
$413.95
Odyssey Drycell Batteries
Odyssey sealed rechargeable drycell batteries provide high engine-cranking pulses and are capable of 400 deep cycles. They can be installed on their sides or at any angle and have a 2-year storage life at 25 degrees C.
( 230 )
$429.99
Fel-Pro Engine Gasket Kits
Fel-Pro engine gasket kits include the seals needed for a complete rebuild, all in one convenient and affordable package. Each kit features the premium-quality gaskets required for your specific engine—from head, intake, and exhaust gaskets … to valve cover, fuel and water pump gaskets, and many more. These sets are available for thousands of vehicle applications. Match your year/make/model to the Fel-Pro engine gasket kit designed for precise fitment.
( 563 )
$274.99
—
$410.99
SCT BDX Performance Programmers
SCT BDX performance programmers include features that'll keep you in the fast lane! These computer programmers are bred to sharpen and maximize your rig's potential to tackle tough terrain, pull heavy payload, and gain the most fuel economy on the highway. SCT gas and diesel programmers are equipped with on-screen gauges, the capability of holding 10 custom tunes, and data logging/monitoring of critical engine parameters. BDX units allow you to adjust nearly two dozen functions (options vary for each vehicle). All of this is packed into compact, sleek, hand-held designs with full-color, easy-to-use LCD displays. Unleash more horsepower and torque when you need it the most—on and off-road. You'll stay ahead of the pack with SCT BDX performance programmers. Order the model recommended for your vehicle application.
( 18 )
$399.00
Summit Racing™ High-Output Ignition Coils
Our Summit™ high-output ignition coils give you additional volts of spark energy in a simple, direct replacement package. These coils mount in the stock location with no special mounting needed, but have a lower primary resistance, higher rpm capability, and greater output than stock. They're available in a variety of styles, both universal and application-specific, and can be ordered individually or in sets.
( 377 )
$271.99
—
$301.99
Cold Case Performance Aluminum Radiators
Cold-Case performance aluminum radiators are available and affordable for all. These high-quality, tube-and-fin performance radiators are true OE styles for most applications. Each Cold-Case design distributes fluid more evenly, eliminating hot and cold spots. Also, the massive cores take up the entire width of their tanks, so you get the most efficient cooling possible. The radiators drop-in without modifications needed (on most) and look original. Plus, Cold-Case stands behind its quality and research with a limited lifetime warranty on their products. All Cold-Case radiators feature: * Lightweight, efficient aluminum construction * 100 percent TIG-welded * Internally welded filler necks offer a clean, factory look * Two oversized cooling rows for increased capacity * 1 in. to 1 1/4 in. tubes for higher volume * Works with factory filler cap * Includes OEM-style petcock * 42.7 percent lighter than comparable copper radiators * 30 percent thicker materials than no-name aluminum radiators * 60-day COOL guarantee
( 661 )
$432.54
—
$435.54
Richmond Gear Ring and Pinion Sets
Richmond Gear is the leading manufacturer of professional-quality, high performance ring and pinion sets. The superior quality of these gear sets is the result of years of racing development, outstanding design, and state-of-the-art manufacturing methods. Richmond also offers these gear sets in a lightened version for the weight-conscious enthusiast. Their lightened ring and pinion sets feature an outstanding rotating weight loss of up to 6 lbs., ground pinion threads for trouble-free installation, and a special heat treatment for improved strength.
( 307 )
$296.23
—
$483.19
On Sale
Frostbite Performance Cooling Aluminum Radiators
Protect your ride from overheating! Now you can maximize cooling efficiency with Frostbite's performance cooling aluminum radiators. They're engineered to cool more effectively and weigh less than the older OEM-style brass units, enhancing the overall performance of your engine. Frostbite radiators are available in a variety of application-specific fitments, each unit engineered with aircraft-quality aluminum cores, fittings, tanks with billet aluminum filler necks, and OEM-style brass petcocks. A proper cooling system starts with the right radiator—the Frostbite!
( 322 )
$427.95
$384.95
JET Powr-Flo Mass Airflow Sensors
JET Powr-Flo mass airflow sensors are designed to deliver improved horsepower, torque, and mileage from your car, truck, or SUV by simply replacing the restrictive stock mass air sensor. The factory sensor not only is a major restrictive point in stock intake systems, but it also limits the full potential of aftermarket cold air intake systems. The flow bench tested design of the JET mass air sensors provide airflow increases of up to 45 percent and installs in 10 minutes or less. They are compatible with other aftermarket upgrades including but not limited to: Performance tuning (chips, modules, etc.), exhaust modifications (cat-back, headers, etc.), cold air intakes, and ignition systems. Order the model designed to fit your needs.
( 245 )
$359.99
Bully Dog GT Platinum Tuners
Bully Dog GT Platinum tuners are four products in one: a vehicle engine tuner, monitor, gauge, and diagnostic device. They dramatically improve the utility of your vehicle by increasing horsepower, improving fuel economy, and providing a comprehensive set of monitoring features and diagnostic functions. Bully Dog GT Platinum tuners are incomparable to other tuning products because they have the largest feature set and the widest range of vehicle applications available.
( 65 )
$399.00
Yukon Gear & Axle Ring and Pinion Sets
Yukon Gear & Axle ring and pinion sets are strong but quiet performers. Designed to handle some of the harshest conditions, these sets utilize the latest design and manufacturing technologies to afford you a smooth running gear that's durable and easy to set up. Yukon ring and pinions are available in hundreds of size, ratio, and axle model options. Whether you're on the street, off-road, or at the track, you'll experience unrivaled power and gear performance. Order the model recommended for your application.
( 174 )
$324.99
—
$470.99
Mahle Original Engine Gasket Sets
Mahle Original offers engine gasket sets for a variety of cars, trucks, and Jeeps. These full gasket sets include the many seals needed to rebuild your engine—all in one convenient package. The gaskets are made from a variety of materials, such as multi-layered steel or molded rubber, for use on various components. Order the Mahle Original engine gasket kit recommended for precise fitment on your vehicle application.
( 26 )
$337.99
On Sale
DiabloSport inTune i3 Computer Programmers
DiabloSport inTune i3 is their third generation of computer programmers, delivering the same great power, features, and application coverage that has established DiabloSport as must-haves for performance enthusiasts. The inTune i3 units, while designed to keep drivers equipped with added horsepower and torque, are also available with 50 state certification. DiabloSport has bundled performance and compliance to offer more for your car, SUV, or truck—paired with the assurance of knowing you're covered at your local smog or emissions center. There's no need to sacrifice power when you choose DiabloSport inTune i3 computer programmers. Order the model designed for your vehicle application. Key features of DiabloSport inTune i3: * Vehicle licenses available to tune multiple vehicles with just one device * New intuitive online update software to keep your i3 current with extended coverage/features, add an extended product warranty, and more * Industry-leading vehicle application coverage for thousands of cars, trucks, Jeeps, and SUVs * Update on the go with Wi-Fi connectivity
( 28 )
$475.95
$427.95
On Sale
Superchips Flashpaq Tuners
Superchips Flashpaq tuners will optimize both engine and transmission calibration throughout the entire powerband. They're effective from part-throttle through wide-open throttle. Features include: * Internet updateable * Built-in diagnostic trouble code definitions * Built-in help screens * USB communications * Custom application upgradeable * Multiple tuning levels * Increased user options for more control * Ergonomically-designed case * Large, soft key buttons * Permanently mounted cable * 300 percent larger screen * Backlit screen for easy-to-read night use
( 97 )
$460.95
$413.95
Earl's Performance LS Steam Vent Kits
Earl's Performance LS steam vent kits eliminate trapped air and steam from your engine to prevent hot spots and overheating. They offer a selection of these LS power plumbing kits, with the appropriate braided stainless steel Speed Flex hose with hose ends that make installation easier and much more attractive than OEM hard lines. Plus, they provide more flexibility when you're using aftermarket intakes and other accessories on performance vehicles. The kits are available in front and 4-corner plumbing options, with adjustable anodized aluminum steam vent adapters and/or distribution blocks. Plumb your LS for performance with Earl's steam vent kits.
( 12 )
$306.95
—
$357.95
