You'll need a trim puller to remove the door trim, and you'll need to disassemble the dash to get to those speakers. I'd recommend you buy the corresponding Chilton or Haynes manual if you don't know how to do this.
The PItA with the door-mounted speakers is that they're riveted in, so reusing those fasteners for your new speakers is not an option.
To change the front speakers, you will have to remove the door panels to expose the speakers. Once exposed, unhook them by disconnecting all the wires.
my Chevy blazer 2001 4 door has 6 speakers
4x6 in dash 6.5 in door 6x9 in rear
in the rear door panel
try to check the fuses in the dash, they usually have a couple speakers one one fuse
the front door spreakers in a 98 s10 s10 blazer jimmy gmc truck any of them are 6.5, but some aftermarket speakers may not fit due to larger magnets and larger surrounds and also door panel may have problem being put back on if you run some of the speakers that are two way oy three way speakers ( with tweeters on top of the speaker. door panel clearence becomes a problem
The door speakers are 5.25 inches but you have to purchase an insert in order to replace the door speakers.
the front door and back door speakers are 6" x 8 " speakers
If you still have the factory speakers installed, each door speaker is 6 1/2. Be careful removing the door panels though, they can be a pain in the arse! Hope this helps!
Door Speakers are 6x8...
i just recently put new door speakers in a 2000 Chevy blazer. They are 6 and 1/2 in all four doors.
There should be 4 door speakers in a blazer - all of them are 6 1/2" speakers. I do believe you need to pull off the door panels to replace the speakers, I have not done that to my truck yet.. Hope that helps you.