It is fairly simple after you undo a few hidden screws. We have complete instructions at out enthusiasts forum at
www.trailvoy.com
6.5" front and rear door speakers
6/9
The speaker size for a 2004 Chevy Trailblazer is 6 1/2 inches. This includes the front, door, and rear speakers.
6 1/2 front and rear
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!
if it is a non bose factory system your truck takes 6 1/2 inch speakers in bot thte front and rear doors
No
www.trailvoy.com Trailblazer enthusiasts forum!
Your steering linkage get loose. The swaybar end links are also a common failure
Get a Haynes repair manual. These vehicles are too complex to treat like old school vehicles.
need to replace door speaker on 2003 Chevrolet Tahoe
I believe they are 6 - 1/2" speakers.