What size rear speakers are in a 03 Silverado EXT cab?
In most 2003 Chevrolet Silverado Extended Cab models, the rear door speakers are 4x6 inches (about 10 cm by 15 cm).
This article explains the typical rear speaker size, where those speakers sit, and how to verify or replace them, since trim levels and aftermarket changes can affect the installation.
Where the rear speakers are located
In the 2003 Silverado Extended Cab, the rear speakers are mounted in the rear doors. They fit into a rectangular opening in the door panel and are designed to work with the factory head unit to provide sound to rear-seat passengers. The mounting depth and grille are generally integrated with the door assembly.
Standard rear speaker size
Before listing specifics, note that the standard rear speaker size for the 2003 Silverado Extended Cab is a 4x6 inch opening. This is the most commonly found size when replacing stock rear door speakers on this vehicle.
- Size: 4x6 inches (approximately 10 cm by 15 cm).
- Type: Usually a two-way coaxial speaker; some trims may use component styles, but the opening typically remains 4x6.
- Location: Rear doors (not the rear deck), as part of the extended cab’s door panels.
For buyers and installers, this means 4x6 inch replacements are the standard starting point, with attention to mounting depth and grille clearance behind the door panel.
Verification and replacement tips
To avoid guessing, verify the exact size directly on your truck using measurements, the OEM parts catalog, or a trusted audio retailer’s fit guide. The steps below help confirm the correct size for replacement or upgrade.
- Remove the rear door panel and measure the speaker opening (width by height). A true 4x6 opening measures about 4 inches by 6 inches; also check the mounting depth to ensure it will fit behind the panel.
- Inspect the current speaker for a size label, part number, or imprint that can be cross-checked against GM catalogs or reputable aftermarket databases.
- Consult the vehicle’s owner or service manual, or use fit guides from retailers (e.g., Crutchfield, Sonic Electronix) that list 2003 Silverado Extended Cab rear-door speaker sizes.
- When in doubt, bring the vehicle’s VIN and trim level to a parts counter or online fit tool to confirm the exact rear speaker size for your specific truck.
With these checks, you’ll typically confirm a 4x6 inch rear door speaker fit for the 2003 Silverado Extended Cab unless aftermarket modifications have occurred.
Notes on variations
While 4x6 inches are standard for most 2003 Silverado Extended Cab configurations, variations can occur due to dealer-installed options or aftermarket upgrades. If you’ve upgraded or altered the audio system, dimensions may differ (for example, different mounting depths or nonstandard adapters). Always verify with measurements or official part references for non-stock installations.
Summary
The majority of 2003 Chevrolet Silverado Extended Cab models use 4x6 inch rear door speakers. To upgrade or replace, confirm the size by measuring the opening, checking part numbers, or consulting an OEM/aftermarket fit guide. This ensures a proper fit and optimal sound for the rear seating area.
What size speakers are in the rear door of a 2000 Chevy Silverado 1500 extended cab?
You'll find 4"x6" speakers in the rear doors in the 4-door Extended Cab, or in the rear door and side panel of the 3-door version.
What size speakers are in the back door of a 2004 Silverado?
The standard door speakers in the 2003-04 Silverado/Sierra are 6-1/2" models, so replacement speakers are easy to find. You can also install slightly smaller 5-1/4" speakers with the help of a mounting bracket, or, if you're willing to drill some new screw holes, slightly larger 6-3/4" models.
What size are Chevy Silverado door speakers?
6x9"
Speakers that fit your 2024 Chevrolet Silverado 1500*
| Speaker location | Speaker sizes** |
|---|---|
| Corner Dash | 2 3/4" |
| Front Center Console | SUB |
| Front Door | 6x9" |
What size speakers are in the 2003 Chevy Silverado EXT cab?
A 2003 Chevy Silverado extended cab has 6-1/2" speakers in the front doors and 4"x6" speakers in the rear doors. You can also fit 5-1/4" or 6-1/2" speakers in the front doors with adapter plates, and some 6-3/4" speakers if you're willing to drill new screw holes.
Front doors
- Stock size: 6-1/2"
- Aftermarket options: 5-1/4" or 6-1/2" with an adapter plate
- Larger option: 6-3/4" can fit with new screw holes
- Bose system: Features a tweeter in the A-pillar
Rear doors
- Stock size: 4"x6"
- Bose system: Has a round speaker mounted in a 4"x6" bracket
