2003 GMC Sierra Accessories & Parts
2003 GMC Sierra Parts
- Suspension
- Brakes
- Exhaust
- Engine
- Air Intake
- A/C & Heating
- Driveline & Axles
- Engine Cooling
- Steering
- Fuel Delivery
- Transmission
- Ignition
- Starting & Charging
- Emission Control
- Electrical
- Performance Chips
- Turbo & Superchargers
- Wipers & Washers
- Oils, Fluids, Lubricants
- Power Adders
- Repair Manuals
- Racing Gear
2003 GMC Sierra Wheels & Tires
2003 GMC Sierra Exterior Accessories
- Running Boards
- Custom Grilles
- Chrome Trim
- Body Kits
- Off-Road Bumpers
- Bed Accessories
- Grille Guards
- Towing & Hitches
- Headlights
- Tail Lights
- Tonneau Covers
- Spoilers
- Wind Deflectors
- Custom Hoods
- Roof Racks
- Car Covers
- Fender Flares
- Mirrors
- Bug Deflectors
- Car Bras
- License Plates & Frames
- Vertical Doors
- Light Covers
- Winches
- Bike Racks
- Wiper Blades
- Mud Flaps
- Emblems & Logos
- Sunroof Visors
- Armor & Protection
- Car Tents
- Snow Plows
- Car Wraps
- Spare Tire Covers & Carriers
- Custom Horns
- Auto Detailing
2003 GMC Sierra Automotive Lighting
2003 GMC Sierra Body Parts
2003 GMC Sierra Interior Accessories
2003 GMC Sierra Audio & Electronics
- Installation Parts
- Speakers
- Cameras & Driver Safety
- Alarms & Remote Start
- Antennas & Components
- Stereos
- Amplifiers
- Subwoofers
- CB Radios & Components
- iPhone & Android Integration
- Bluetooth
- Equalizers & Processors
- Batteries & Power
- Video
- Radar Detectors
- GPS Systems
- Mounts & Chargers
- Action Cameras & Accessories
2003 GMC Sierra Automotive Tools
- Oil Change Tools
- Spark Plug & Ignition Tools
- Wheel & Tire Service Tools
- Engine Service Tools
- Brake Service Tools
- Suspension & Steering Service Tools
- Fuel System Service
- Transmission & Drivetrain Service Tools
- Pullers & Installers
- Cooling System Service Tools
- A/C Tools & Equipment
- Electrical System Tools
- Diagnostic & Testing Tools
- Auto Glass Tools
- Lockout Kits
- Automotive Lifts & Stands
- Repair Manuals
- Automotive Paint
- Exhaust System Service Tools
- Jacks
- EV Charging
- Battery Chargers & Jump Starters
- Dollies & Movers
- Creepers
- Auto Detailing
- Key Cutting Machines
- Dent Repair Tools
- Service Carts
- Vehicle & Parts Protection
The GMC Sierra enters the 2003 model year offering a broad range of upgrades, both inside and out. The truck now looks bolder thanks to a redesigned front end and more distinctive wheel designs. Almost all versions of the 2003 Sierra come with a new grille and new chrome front bumper featuring two airflow cutouts, with the only exception being the Sierra Denali. The new grille has a 3-horizontal-bar black design with a more prominent automaker’s logo. The base version of the new GMC Sierra comes with a light gray lower fascia, while higher trims feature a body-colored one. New body side moldings and a single roof antenna create a clean look.
The 2003 GMC Sierra employs an extensively upgraded braking system that now delivers improved feel and works quieter. In addition, it meets the FMVSS 135 requirements. Some of the key improvements are enhanced ABS performance and increased stopping power. Now you have to apply less pedal force for high deceleration stops. Vortec power plants employed by the Sierra were upgraded and now come with more efficient oxygen sensors and electronic throttle control as standard, providing enhanced driveability and fuel economy as well as lower emissions. A 4.3 L V6 engine now delivers smoother and longer-lasting performance along with decreased emissions thanks to standard multi-point fuel injection. A 5.3 L V8 is flexible fuel capable – it can operate on a mix of 85% ethanol.
The 2003 GMC Sierra comes with an extensively redesigned cab, providing enhanced refinement and comfort. The dashboard now features new switch controls, trim plates, ISO symbols instead of text, and more functional cluster that provides easier-to-read information. The cluster features a new driver info center that shows status of more than 27 functions on a single-line LCD screen. The cluster in the 2003 Sierra Denali has blue backlighting, black background, and white pointers emphasizing its premium character. A dual-zone HVAC system with manual controls is now standard for extended cab versions and optional for regular and crew cabs. It allows for individual temperature settings for the driver and front passenger. Standard on the Denali and available on other models, 8-button steering wheel controls permit calculations for fuel and trip info, provide secondary audio adjustments, and perform many other functions.
In our store, we carry a comprehensive range of 2003 GMC Sierra parts and accessories. While being designed to meet all of your requirements for look, fit, and reliability, 2003 GMC Sierra accessories and parts on offer come at budget-friendly prices. Our 2003 GMC Sierra parts and accessories are sourced from some of the industry's most experienced and renowned brands and provide high quality performance.
Want to make your 2003 GMC Sierra one of a kind, keep it running at its peak, or turn it into a high-powered beast? Our vast selection of premium accessories and parts ticks all the boxes. Quality is at the heart of everything we do at CARiD, so whatever your project, our brand name products and qualified experts will ensure success. Class. Luxury. Durability. We have it all, and we're always here with everything you need to keep your 2003 GMC Sierra in tip top shape, inside and out.