What is the size of speakers on the dash of a 1991 gmc single cab
6/3" 4 ohms and up to 50 watts
4x6
4x6 are the size of the door speakers on 2004 GMC Sierra. Standard cab
The stock size of the speakers in a GMC Sierra are 4x6 in the rear. If they have not yet been switched out with an aftermarket, they will be the 4x6.
All four speakers are 4x6. I just ordered new 4x6's for my 93 GMC Sierra, and that is the stock size.
The 2001 GMC Sierra has 6 1/2 inch speakers in the front as well as in the rear.
6.5" round door speakers
The speakers in a 2006 GMC Sierra 1500 crew cab are 6.5 inches. However, the speaker manufacturer will refer to this size as 6.75 or 6 3/4 inch speakers.
6.5
6.5"
usually 6.5 or 6.75 (same mounts, same speakers)
The standard speaker size on a 1996 GMC Sierra truck is 9 inches. Larger speakers can be added but required the opening to be enlarged.
5 1/4'' front and rear