One thing for sure is this, I have always liked the GMC grilles (except 73-75) better than the Chevy grilles
I am the exact opposite. I dislike the GMC grilles.
Martin
I like my GMC front
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My favorite style of all is the '80 model year. I totally dig the large single headlight that year. Other years of single headlight? not so much. But that '80 is what does it for me. Next up would be the '85-'88 quad light grill. Best looking setup for that body style. I really kinda dislike the '89-'91 head light setup, doesn't look right, kind of like they were an afterthought to "update" the Suburbans and Blazers and heavy duty pickups of those years to "look" like the newer body style pickups.'81-'88, and '89-'91 is kind of an odd way to split them up.
A better way to split them up would be as follows:
'81-'82
'83-'84
'85-'88
'89-'91
Also, not all 1980's got the square headlight, only the upper trim levels did (Silverado), so a lot of them look just like a '79.
I prefer '89-'91 > '85-'88 > '81-'82 > '73-'78 (I understand there are quite a few differences in the grilles of these year) > '83-'84 > '79-'80.
Martin
An '80 single headlight looks just like a '79 unless it is a Silverado and got the square headlights.
Martin
My 80 had the square headlights and it was a cheyenne.
The 1980 Cheyenne came standard with the round headlights, unless the RPO code V22 option was ordered...that gave it the square headlights like the Silverado

Actually there was no Cheyenne model in 1980 Blazers. That was the first year of Silverado, and you did not have to get the Silverado package to get it, it was an optional grill. My 1980 was wearing Cheyenne badges, but the glove box sticker showed it was in fact a Silverado. There were two models in 1980, Silverado and base models, no Cheyenne at all that year. Unless you are calling Cheyenne the base model which is incorrect.The 1980 Cheyenne came standard with the round headlights, unless the RPO code V22 option was ordered...that gave it the square headlights like the Silverado
Actually there was no Cheyenne model in 1980 Blazers. That was the first year of Silverado, and you did not have to get the Silverado package to get it, it was an optional grill. My 1980 was wearing Cheyenne badges, but the glove box sticker showed it was in fact a Silverado. There were two models in 1980, Silverado and base models, no Cheyenne at all that year. Unless you are calling Cheyenne the base model which is incorrect.
There is a 1980 base model Blazer here in the valley, and my Silverado, the differences are very few, mine came stock with chrome, rear quarter badges, and chrome grill, his came stock with none of that.

Actually there was no Cheyenne model in 1980 Blazers. That was the first year of Silverado, and you did not have to get the Silverado package to get it, it was an optional grill. My 1980 was wearing Cheyenne badges, but the glove box sticker showed it was in fact a Silverado. There were two models in 1980, Silverado and base models, no Cheyenne at all that year. Unless you are calling Cheyenne the base model which is incorrect.
There is a 1980 base model Blazer here in the valley, and my Silverado, the differences are very few, mine came stock with chrome, rear quarter badges, and chrome grill, his came stock with none of that.

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We have all kinds of grilles here