Ive seen plenty of 67-72 chevy trucks that has the original speaker underneath the dash and it has like speaker holes on the top of the dash. The Blazer that i have does not have the holes on the dash. Did Gm placed the speakers in different places. Im confused.:confused:

Luis.

Hey Luis, I believe some Blazers had the speaker mounted under the ac/heater controls.

...Dan

Blazers were a mixed bag. I don't know what determined in dash versus under dash. Here is a under dash picture I got off the board:

Thanks guys for the help. That really helps alot.

Luis.

Have had them both ways with no rationale as to why--both had factory radio's, both were from 72----just another one of them things in life that is designed to keep us humble!!hehehhe----Huck

I've even seen them with BOTH the speaker hole in the dash and the speaker underneath.

Maybe that was their idea of 'stereo'

My 1970 has it under the dash on the passenger side... like aimed down towards the passenger's feet area. Is this also a common location?

Darren

My 1970 has it under the dash on the passenger side... like aimed down towards the passenger's feet area. Is this also a common location?

Don't believe it is.
Only seen them as the pics above show.

On a previous thread about this subject there was a theory that 72 was the only year that some Blazers/Jimmys had the hole in the dash and while others did not. This lead to the possibility (theory again) that truck dashes were used when they ran out of Blazer/Jimmy dashes.

Oh and my 71 has no speaker hole.