if it is a non bose factory system your truck takes 6 1/2 inch speakers in bot thte front and rear doors
The speaker size for a 2004 Chevy Trailblazer is 6 1/2 inches. This includes the front, door, and rear speakers.
what size speakers are in the 2004 Chevy Avalanche
8"
6.5" front and rear door speakers
6/9
6 1/2 front and rear
6in
6.5 in..but depending on if you have onstar, or the boss system they could vary.
6.5 in..but depending on if you have onstar, or the boss system they could vary.
Same as the front (6.5 inch) although the speaker basket does not have the tweeters in it for the rears. www.trailvoy.com All the answers for your Trailblazer!
6 3/4" speakers front and rear in a four door 2004 Chevy Colorado.
Front Door Speakers are 6-1/2"