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Old 05-01-2012, 01:00 PM   #1
2003 silverado
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Blazer Speaker mounting problems

Ok I just got a under dash speaker .The problem is the mounting holes interfer with the A/C controller .what do I do????????????
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Old 05-01-2012, 01:03 PM   #2
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Re: Blazer Speaker mounting problems

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Originally Posted by 2003 silverado View Post
Ok I just got a under dash speaker .The problem is the mounting holes interfer with the A/C controller .what do I do????????????
Dont you just take out the two screws that mount your control panel, and remount the speaker bracket using the same two screws. Dont have ac, but that is the way it works with the heater control panel

Got pics?
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Old 05-01-2012, 01:18 PM   #3
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Re: Blazer Speaker mounting problems

The ac controller has mounting brackets that get in the way also here is some tidbit of Info

Blazer and Jimmy Speakers
One of the most unusual features of the 1967-1972 series of trucks is the unique placement of the 1969-1972 Chevrolet Blazer and GMC Jimmy radio speaker. Unlike the pickup, Suburban, and large trucks; the radio speaker is not under the top of the dash. In fact, the dash does not even have grille slots to allow sound to come from a speaker.

Because of the Blazer and Jimmy's removable top, GM knew that some would occasionally be caught in the rain. This would quickly ruin a speaker that was in the traditional location. Thus, on the 1969-1972 Blazer and Jimmy only, the factory radio speaker is in the right side interior quarter upholstery panel behind the front seat. If the vehicle did not come with interior rear panels, the speaker was out of sight at the bottom edge of the dash.
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Old 05-01-2012, 01:22 PM   #4
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Re: Blazer Speaker mounting problems

I guess now I need to cut into the panel????????? and find a pic of that to see what it looks like???????
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Old 05-01-2012, 09:37 PM   #5
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Re: Blazer Speaker mounting problems

i had a 72 with ac and it had the speaker bolted with the ac controller dont have that truck any more so i cannot help with details
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Old 05-01-2012, 09:48 PM   #6
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Re: Blazer Speaker mounting problems

My blazer came with the speaker mounted in the dash. It is non AC though.
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Old 05-01-2012, 10:17 PM   #7
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Re: Blazer Speaker mounting problems

I have AC and the speaker bolted up under the dash but on the outside. I assume that is how it was supposed to install as I couldn't get it to work inbetween the dash and AC/heat control.
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Old 05-01-2012, 10:49 PM   #8
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Re: Blazer Speaker mounting problems

Here's where the General mounted the one in my '71.

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Old 05-01-2012, 11:41 PM   #9
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Re: Blazer Speaker mounting problems

2003 or rsavage

Where did you get the under dash speaker and (for rsavage) how does it sound?
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Old 05-02-2012, 02:45 AM   #10
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Re: Blazer Speaker mounting problems

Quote:
Originally Posted by rsavage View Post
I have AC and the speaker bolted up under the dash but on the outside. I assume that is how it was supposed to install as I couldn't get it to work inbetween the dash and AC/heat control.
I ordered mine with A/C and AM, and that's the way they mounted them in St. Louis. (where it was assembled) In the 72's anyway.
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Old 05-02-2012, 06:25 AM   #11
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Re: Blazer Speaker mounting problems

I tryed it between the ac-dash would not work.......tryed to mount the way everyone is talking about ,BUT the bracket on the speaker is treaded and are not as flat as rsavage
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Old 05-02-2012, 06:30 AM   #12
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Re: Blazer Speaker mounting problems

Dmcinfo,
I bought it off the board. They come along once in a blue moon. As for sound, I couldn't tell you as it isn't working. I will probably have to send it for repair. I am almost positive the radio is good but I am loathe to get into it right now. Removing a radio in an ac truck is a pain so before I pull it out I am going to make sure that it is the speaker that isn't functioning. Probably a next winter project as I want to drive the Blazer now.
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Old 05-02-2012, 06:40 AM   #13
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Re: Blazer Speaker mounting problems

I just picked mine up from a member- oldschool it doesnt work but thats fine, I went for the look
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Old 05-02-2012, 09:08 AM   #14
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Re: Blazer Speaker mounting problems

[QUOTE=
....Thus, on the 1969-1972 Blazer and Jimmy only, the factory radio speaker is in the right side interior quarter upholstery panel behind the front seat. If the vehicle did not come with interior rear panels, the speaker was out of sight at the bottom edge of the dash.[/QUOTE]

I assume this is a quote from some litereature? My Cheyanne package Jimmy didnt have any speaker in the rear upholstery panel. I dont think Ive ever seen a 'factory' speaker there... anyone else seen one??
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Old 05-02-2012, 10:56 AM   #15
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Re: Blazer Speaker mounting problems

heres a link I found this
http://www.oldchevytrucks.com/blog/i...hp/tag/blazer/
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Old 05-02-2012, 03:21 PM   #16
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Re: Blazer Speaker mounting problems

I was hoping that old man jimmy would chime in here.... I knew he would be the guy to ask!
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Old 05-02-2012, 04:07 PM   #17
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Re: Blazer Speaker mounting problems

My 72 CST Blazer with AM/FM radio had and still has (have not taken it out yet) the original speaker under the dash w/speaker holes in the dash. In the picture it is in the upper left corner, picture is from the glove box as I was pulling the A/C.



Looked but I don't have a pic of the top of the dash.
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Old 05-02-2012, 06:03 PM   #18
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Re: Blazer Speaker mounting problems

If the speaker was placed in the right side panel on trucks with side panels then the survivors with radios would have holes in them. I have a set of originals I bought from a board member and the right side doesn't have a speaker hole. I haven't seen a speaker installed in that way from the factory. I don't think that the blog post can be counted upon as reliable. It refers to the Blazer as having a 107" wheelbase when the diagram below shows the correct 104". Further, it appears that the brackets on the speaker shown have been bent to 90 degrees?
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Old 05-02-2012, 07:05 PM   #19
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Re: Blazer Speaker mounting problems

Ok back to the org problem and I guess I should have posted pics. I think maybe the brackets are wrong????? they are threaded
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Old 05-02-2012, 07:08 PM   #20
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Re: Blazer Speaker mounting problems

Quote:
Originally Posted by 2003 silverado View Post
I tryed it between the ac-dash would not work.......tryed to mount the way everyone is talking about ,BUT the bracket on the speaker is treaded and are not as flat as rsavage
Dont think they should be threaded, got pics of the bracket?
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Old 05-02-2012, 07:10 PM   #21
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Re: Blazer Speaker mounting problems

Man that was quick


That nut shouldnt be welded on there, dont know what application it would be for.....

Maybe dual speakers, across the lower dash
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Old 05-02-2012, 07:44 PM   #22
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Re: Blazer Speaker mounting problems

I believe mine were threaded also (had nuts welded on them). I ground them off and redrilled so AC/heat control screws would go through. Any of the photos I found had it in the center, but perhaps the correct install is as 1949GMC pictures as the threaded nuts would be used. I am going to check my assembly and chassis manuals to see if I can come up with a GM picture.
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Old 05-02-2012, 07:58 PM   #23
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Re: Blazer Speaker mounting problems

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Originally Posted by 1949gmc View Post
Here's where the General mounted the one in my '71.

Attachment 917960

Same place I have my stock speaker mounted. Those welded nuts would come in handy in this location as I believe there are only holes in the dash lip.
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Old 05-02-2012, 09:34 PM   #24
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Re: Blazer Speaker mounting problems

didnt you get any instructions when you bought that speaker
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Old 05-02-2012, 09:42 PM   #25
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Re: Blazer Speaker mounting problems

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Originally Posted by 2003 silverado View Post
Ok back to the org problem and I guess I should have posted pics. I think maybe the brackets are wrong????? they are threaded
Brackets aren't wrong... that's how it's supposed to be.

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