What size speakers are in a 2004 TrailBlazer?
Front-door speakers are typically 6.5 inches; rear-door speakers are commonly 4x6 inches; dash/tweeter speakers are about 1 inch. The exact configuration varies by trim and whether the vehicle has the base audio or a premium system.
Front-door speaker sizes
Here's what to expect in the front doors for a 2004 TrailBlazer, depending on trim and audio package.
- 6.5-inch (165 mm) two-way speakers are standard across most trims, with mounting depths typically around 2.0–2.5 inches.
- In some premium packages, the same 6.5-inch size is used in the front doors as a component system (separate woofer and tweeter) but still approximately 6.5 inches in diameter.
- Some factory upgrades might use a shallow-mount variant to fit tighter door spaces; verify the exact depth before purchasing replacements.
In short, front-door speakers are most often 6.5 inches in diameter across common 2004 TrailBlazer configurations.
Rear-door and rear area speaker sizes
Rear seating areas and any rear deck or shelf speakers vary by audio package; the following sizes cover the typical setup.
- Rear doors: 4x6 inch speakers are common in many GM SUVs of this era.
- On some higher-end or premium audio configurations, you may encounter larger rear-area speakers (6x9 inch) in the rear deck or rear pillar locations, but this is less common for 2004 TrailBlazer unless a specific system was installed.
- Depth and mounting can vary; check the service manual or remove a panel to confirm exact fit before buying replacements.
Across most 2004 TrailBlazer models, the standard rear-door size is typically 4x6 inches, with rare premium configurations using alternative rear speaker placements.
Dash and small speakers
The TrailBlazer typically includes small high-frequency speakers in the dash or A-pillars to accompany the main front doors.
- 1-inch (25 mm) tweeters are standard in the A-pillars or dash area in most configurations.
- Optional center-channel or mid-range speakers in some trims could use around 3 inches, depending on the audio package.
In summary, you can expect 6.5-inch front doors, 4x6 rear doors, and 1-inch tweeters on a 2004 TrailBlazer, with variations depending on whether a premium system is installed.
Summary
For a 2004 TrailBlazer, the usual factory setup features 6.5-inch front-door speakers, 4x6-inch rear-door speakers, and 1-inch tweeters in the dash/A-pillars. Premium audio packages may modify rear or center speakers, but the 6.5" fronts and 4x6" rears are the standard baseline. To be certain, check the vehicle’s trim for the exact configuration or consult the OEM service information for your VIN.
What size speakers does a 2004 Chevy Trailblazer have?
The standard speaker size for a 2004 Trailblazer is 6-3/4 inches for the front doors, with tweeters in the front corner of the dash. If your model has the Bose premium audio system, the front door speakers are 8-inch units. You will also need 6-1/2 inch component speakers for the kick panels.
- Front Door: 6-3/4" (standard) or 8" (Bose models)
- Dash (Corner): Tweeter
- Kick Panels: 6-1/2" Component
What size door speakers are in a 2004 Chevy?
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 factory door speakers?
And you're going to put down that you got 6.5s. Now you go look for the right 6.5s. Much as I like to say these things are just plugandplay. A lot of times it takes a little bit more thought into it.
What size are Trailblazer door speakers?
Woofer Size 160mm 6.5in. Tweeter Size 25mm 1in.
