Start by climbing into the trunk and locating the three metal clips in the back, one in the middle and one each of the far sides. You'll need two people for this project. Have the person in the trunk use a screwdriver to lift up the clips while another person in the back seat of the car pulls the seat toward them. Once all the clips are off the frame, you can pull the seat down. Carefully lift up the thing in the back (don't know what it's called, above the seat and under the window, you'll notice it's directly above the speakers) so not to tear it. Once that is lifted you should be able to see the top of the speakers. Now's the fun part of trying to undo all the screws in a relatively tight space. Once the screws are gone, lift the speaker up and down through the hole. Then simply slip the new speaker through the same hole and fasten the new screws. Keep in mind the speaker are 6"x9" and as long as you get that size, they will fit perfectly (it's a wonderful thing!)
4x6 in the front 6x9 in the back
Back by the fuel tank itself, look around and it is easy to get and replace
Back seat has to come out and the rear package tray too and then you can get to the bolts that hold the speakers in.
6 x9 in the back and 3.5 inch round ones in the dash ........tuner1978
Well I have a 1994 Eddie Bauer and I just had my back door speakers replaced and those were 6x8. I was also told that the front door speakers are the same.
To replace the rear speakers, you have to go in the trunk, look towards upper back section of the trunk and you will see the speakers. The speakers have two black hand-screws that can be unscrewed without tools. It is as simple as this.
My 1992 had 6" Factory Round speakers in the front doors and 6 X 8 Factory speakers in the back. My 1998 has Factory 6X 8 speakers in the back (extended cab) and haven't checked the front ones yet. my 1994 has 6"x8" as well in the front and rear.
5 1/4 in the front, 5x7 in the back
It depends. In my 1994 Eclipse GS there were 3.5" speakers in the dash, 6.5" speakers in the doors and 6X9" speakers in the back. I think some have 6.5" in the back and some do not have the 3.5" in the dash. Best to have someone who knows what they are doing take a look at it. Some people put tweeters where the 3.5" are others just unhook the dash speakers and replace the door speakers with high quality 6.5" Good Luck.
I am assuming you mean there is volume from the blower but it is cold. If so, First check your coolant level, if it is low the first thing to empty is the heater core. Check this and get back.
Remove the rear speaker covers in your 1994 Chevy Cavalier. Remove the rear speaker retaining screws. Remove the wiring harness from the back of the rear speakers.