Did speakers come default or was that an added option

[1977C20Silverado]

My truck is stock with no radio, it’s got a plastic cover in place of the radio. But it has a dash with holes right in the center that looks like a speaker would go there. Did some digging and some are saying all had speakers, some saying it was an option. Could just be that all dashes were made like that, idk. I’ve read the manual for my truck and for the year and they helped a little but not much. So if y’all got an answer as to whether there’s a speaker or not and if there isn’t, what are those holes for

 

[Originalthor]

Im pretty sure All dashes were made with the center like that. My suburban came with no radio from factory.

 

[SirRobyn0]

I have no real knowledge on the subject, but it would make sense from a cost and production stand point not to make a special dash for the few trucks that came without a radio.

 

[75gmck25]

AFAIK, no trucks had a radio stock (always an option), but all had the holes punched in the top of the dash for speakers.

 

[BadBowtie]

Correct. All holes are already there.

Then there are base model trucks with an AM only radio using the center only dash speaker.

All other "radio levels" eliminated the center speaker and the two front corner speakers appeared along with the two rear corners speakers on the rest. AM/FM only & AM/FM cassette.

 

[75gmck25]

On a ‘77 (like the OP) I don’t think they had the option yet for dash corner speakers. My ‘75 definitely does not have cutouts for them.

 

[TotalyHucked]

^Correct. Early trucks didn't have the corner dash speakers, only the center. I'm not exactly sure when they started getting corner speakers, '81? I know '81-up high trim trucks got them. Later trucks got just a center speaker if it was a super base model with the base radio, otherwise they got the corner speakers and usually the rear corner speakers as well behind the seatbelts.

All dash pads had those holes whether the truck got a radio/speaker or not.

 

[idahovette]

Ordered my 75 K20 with an AM/FM and it had only the center speaker, no other option that I could see??

 

[mibars]

On my 90 Burb I've discovered that ther is no center speaker, other speakers are present. It's like they intentionally added a weak spot to encourage dash cracking...