6.5 in. diameter
4x9
The 2007 Chevrolet Silverado-1500 has a 4.8 L base engine size.
The 2007 Chevrolet Silverado-2500HD has a 6.0 L base engine size.
The 2007 Chevrolet Silverado-3500HD has a 6.0 L base engine size.
The 2007 Chevrolet Silverado-2500HD has a V8 engine.
The 2007 Chevrolet Silverado-1500 has a V8 engine.
The 2007 Chevrolet Silverado-3500HD has a V8 engine.
All the speakers in a 1991 Chevy Silverado should be 4x6 if they are stock.
6.5 in the front and 4x6 in the back
Crutchfield.com has most domestic/import cars and pickups listed with the specifications for speaker size and location Crutchfield.com has most domestic/import cars and pickups listed with the specifications for speaker size and location
I believe the speaker size is 4 x 6. When you go to sites like crutchfield.com, they usually will show the size of speakers that fit your vehicle. For my 2001 Silverado 1500 extended cab, the 4 x 6 was the size they said would fit my truck.
6 1/2 upfront 4x6 in rear