Re: What determines side marker lights - standard or deluxe?
It has always been talked about how GMC added options without any rhyme or reason. My 70 GMC Custom came with a 350ci w/3spd manual, No power anything, but had the headliner w/trim, deluxe side markers and upper & lower wood grain trim package w/tailgate trim. Front & rear glass trim. Did not come with factory gauges. My SPID just says Custom Option, 350 engine & that's it. So, go figure.....
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1997 GMC Sierra Ext
1965 Mustang
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