What’s this hole for? (1955 GMC 2nd Series)
 

Driver’s side roof by a pillar, nothing on the passenger side.

Re: What’s this hole for? (1955 GMC 2nd Series)
 

If you are looking out the front windshield, it is for the visor arm mount just like on my 59 GMC Fleet. My 59 has only one on the driver side. May have been an option or model to get the visor on the passenger side in those years.

Re: What’s this hole for? (1955 GMC 2nd Series)
 

Can anyone share some pics please? I would like to see what they look like, if we should just live with the hole. Seems odd to only have one for the driver. Even heavy duty work trucks have at least one passenger every once in a while. Also odd, because so many people have an exterior visor. We even bought one to add.

Re: What’s this hole for? (1955 GMC 2nd Series)
 

my 58 chevy truk has the visor hole on both sides

Re: What’s this hole for? (1955 GMC 2nd Series)
 

Thanks so much. Yeah, nothing on the passengers. Seems odd. I think the cab is original. The rear glass had decals from a radio station that went defunct in the early 70s.

Re: What’s this hole for? (1955 GMC 2nd Series)
 

Not odd at all when you figure out that the passenger side visor was an extra cost option. The passenger side visor came original on the Deluxe cabs but were an extra cost option on standard cabs. I'm thinking that a lot of things we see as standard equipment on 73 and up trucks may have been optional on the earlier trucks. Even in the mid 60's a lot of rather common accessories were extra cost options and you could buy a new basic six cylinder three speed shot box pretty cheap off the dealers lot if got the basic fleet delivery truck.

Re: What’s this hole for? (1955 GMC 2nd Series)
 

Looking back my 57 Panel only had the drivers seat (single) with no passenger seat ever having been installed and no visor on the passenger side. It had racks fastened to the inside braces in the roof for clothes to hang on as it had been a laundry/dry cleaners delivery truck in it's first life. I used an over stuffed chair for a passenger seat for a while and a couple of guys from Waco can tell you stories about riding in that panel in that chair when I nailed the 327.

Re: What’s this hole for? (1955 GMC 2nd Series)
 

only had one in my 55 but made a template of the driver and made holes on passenger side

Re: What’s this hole for? (1955 GMC 2nd Series)
 

my 57 has both driver's and passenger's sun visors. it is a Custom cab with the big back window etc.
the 56 i had as a parts truck only had the driver's visor. only a key hole to unlock/lock the passenger's door, and only a left brake/turn light.

My dad had an 85 truck formally a University fleet vehicle with only the driver's side visor

they didnt have a long list of Standard Equipment back then

Re: What’s this hole for? (1955 GMC 2nd Series)
 

heater, either visor, 4 fuse "panel"; were all optional, my 59 1T panel had no heater from the factory
my 58 truk is also a big window custom cab, i wonder if that designates 2 visors