What size speakers are in a 1993 GMC Sierra?
Front door speakers in most 1993 GMC Sierra pickups are 4x6 inches. Rear speakers, if present, depend on the cab configuration and options, with regular cabs often lacking rear speakers and extended or crew cabs typically including rear speakers that are commonly 4x6 inches, though some trims used different rear sizes. To be certain for your truck, check the door panels or reference the original build sheet.
The 1993 Sierra lineup offered multiple cab styles and audio packages, which means the exact speaker sizes could vary from truck to truck. This article outlines the typical configurations and practical ways to verify the precise sizes for your particular vehicle, as factory options and aftermarket replacements can differ.
Typical configurations by cab style
Understanding how the cab style influences speaker installation helps set expectations for replacement or upgrade. In general, the front doors use standard GM 4x6 inch speakers, while rear speaker setups depend on whether the truck is a regular cab or a longer cab variant.
How to confirm the exact size on your truck
To be sure of your Sierra’s exact speaker sizes, consider these practical checks:
- Inspect the door panels to measure the opening or check the existing speaker diameter if you’re replacing only the driver.
- Look up the vehicle’s original build sheet or window sticker, which sometimes lists the radio/speaker package.
- If in doubt, remove a door panel or consult the service manual for your specific trim and cab configuration to confirm the correct size.
Summary
In short, the usual front-door size for a 1993 GMC Sierra is 4x6 inches, with rear speakers—when present—varying by cab type and option package. Regular cabs often did not include rear speakers, while extended and crew cabs typically featured rear speakers that are commonly 4x6 inches, though variations exist. Verifying on your exact vehicle is the best way to ensure an accurate replacement or upgrade.
