Part # for C1 outside mirror base/bracket

[Andrew N.]

What's the correct number stamped on the outside mirror mounting bracket/base for C1? I'm assuming it's the same for all C1 since they use the Y-50, if not what's correct for '56? I see the number 5946478 around but this shows as correct for C2 according to GMPartswiki.

[Joe M.]

Re: Part # for C1 outside mirror base/bracket

You won't find the base plate part in any parts books because it does not appear that it was sold separate. The entire mirror was sold as a unit. I thought I had an extra mounting plate in my box of parts, but could not find it. I will look more.