Same as the front (6.5 inch) although the speaker basket does not have the tweeters in it for the rears.
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6.5" front and rear door speakers
The speaker size for a 2004 Chevy Trailblazer is 6 1/2 inches. This includes the front, door, and rear speakers.
Simple procedure is well documented at our Trailblazer enthusiasts forum www.trailvoy.com Article section for replacing door speakers!
Anything is possible with moddification.. but it is a lot easier to just get a set of the 6.5" speakers that it calls for.
Pioneer
; Front speakers : Front Door: 6-3/4" ; ; Rear speakers : Rear Door: 6-3/4"
I believe they are 6 - 1/2" speakers.
6 1/2 front and rear
Front door speakers - 6.5 rear speakers - 6x9
The door speakers are 6 1/2 " round...still looking for the size of the rear ones.
should do.. the body the same...
The front door panels have 6 1/2" speakers and the rear speakers are 6x9"