Originally Posted by Freq2002
GMC's have a remote speaker housing (I have NO idea where it should go tho,...).
I found that the remote speaker fits above the rear view mirror. theres a knock out for the speaker magnet and wire and a couple dimples for the lower screw holes, the upper screws go into the headliner. It's not a bad looking instal when it's up there. Running the wire down the A-pillar is a bear though!

1956 GMC 370 dump " 'Tater "
1970 VW Volksrod "the Black Bomber"
2007 Chevy Avalanche
2020 Jeep Cherokee Trailhawk,
2005 Harley Davidson FLHTCUI

I dig all cars, old and new, whether they were hammered out of American iron, German steel, or Japanese tin cans. Being unable to appreciate them all is missing out on a world of great things.
But thats just MY opinion! :P