Front speakersFront Door: 6-1/2" factory speaker noteFar rear speakersBehind Seat: 4x6"
It has 4x6" speakers.
4x10 rears
All the speakers in a 1991 Chevy Silverado should be 4x6 if they are stock.
1988-1999 Chevy and GMC full size the door speakers are six and a half inch on the extended cab the pillar speakers are 4x6 in. Some Silverados also had a small tweeter inside the door.
6.5" round speakers.
Front Door Speakers are 6-1/2"
Stock speakers should be 4x6's
4 x 6
4x6
4×6
The door speakers are 6 1/2 " round...still looking for the size of the rear ones.
You don't need factory speakers. Just buy the same size speakers and install.