Thank you so much, those two pictures explain so much, i couldn't understand why a shop was showing me different set or corner light for the same year, and there it is the obvious difference between a GMC and a CHEVY, so i'm actually a chevy from some obscur year yet to discover ( i have to decode a vin i found on some part), and going to the gmc badge from his paper, but not year ;p and now i see what parts i need to buy. Some seller show picture for the the parking and highbeam almost like if they were a block, but i never saw that on picture, they must have taken the picture with them very close.
See. that confuse me
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when i was checking bumpers there was no bumper for a "quad" light, not 2+2 if you see what i mean