What size speakers are in a 1999 Chevy Silverado extended cab?
The front doors typically use 6.5-inch speakers, the rear side panels commonly use 4x6-inch speakers, and a 1-inch tweeter is usually installed in the dash or A-pillar. Variations can occur based on trim level and factory options.
In this article, we break down the common factory configurations for the 1999 Silverado extended cab, explain how to verify the exact sizes on your truck, and offer guidance for upgrading or replacing the factory speakers.
Factory speaker sizes by location
Below are the sizes you’ll most often encounter in the factory setup for the 1999 Silverado extended cab. Remember, there can be exceptions based on trim and optional audio packages.
Front doors
Front-door speakers are typically the main woofers in the door panels. Common sizes include:
- 6.5 inches (165 mm) for most trims (2‑way systems).
- 5.25 inches (133 mm) in some base or non-premium trims.
When upgrading, check mounting depth and whether you need adapters or modification to fit 6.5" units in the door openings.
Rear side panels
The extended cab’s rear side panels behind the rear doors usually house a rectangular speaker. Common factory size:
- 4x6 inches (115x150 mm) for a two‑way setup.
Some trucks may have configurations without rear speakers depending on the option package; aftermarket replacements should match the 4x6 dimension or be adapted accordingly.
Dash/A-pillar tweeters
Many trims include a small tweeter as part of a two‑way system, located in the dash or A‑pillar. Typical size:
- 1 inch (25 mm) tweeter for the high‑frequency range.
Some base configurations may omit dash/tweeter components or use alternative locations; verify what your specific truck came with.
Summary
Overall, a typical 1999 Chevrolet Silverado Extended Cab features 6.5-inch front-door woofers, 4x6-inch rear side-panel speakers, and 1-inch tweeters in the dash or A‑pillar. Sizes can vary by trim and factory audio options. To be certain for your exact vehicle, inspect the door panels or consult a parts diagram or service manual. If upgrading, use compatible 6.5" front speakers and 4x6" rear speakers, and ensure the wiring and crossovers match your new system.
What size are the rear speakers in the Silverado extended cab?
Rear door speakers. You'll find 4"x6" speakers in the rear doors in this extended cab Silverado or Sierra, or if you have the Bose system, a round speaker in a 4"x6" bracket. Once you've used a panel tool to remove the door panels to get these speakers, they're extremely easy to take out, thanks to their clip-in plates ...
What size speakers are in a 2000 Chevy Silverado extended cab?
Stock speakers for the front of the Silverado/Sierra are 6-1/2", a common size with great aftermarket support. You won't have trouble finding a speaker to fit any musical taste or budget.
What size speakers are in a 99 Silverado?
6-3/4"
What size are Silverado door speakers?
6x9"
