Looking for Info on These Mirrors

[FirstOwner69]

I swear the mirrors in the pictures below were on the 1986 dually I had from 1987 to 1999. I don't recall if I bought them or if they were on the truck when I bought it. Since I still have one of the original boxes, I'd guess I bought them, but I'm confused why the box says they are for 1988 and up trucks. I never owned a truck in the 1988 - 1998 series.

I'm planning to sell them, but am trying to figure out what years they will fit. Were the mounting arms bent at different angles?

[mongocanfly]

I googled 89 gm mirrors..and they came up looking just like those.. but with the black mounting bracket though..
They are very similar to the square body mirrors though

[hatzie]

The 88-01 GMT400 mirrors are likely different mounts and arms.
If they're for an 87-91 RV series they should just fit a 73-86 CK squarebody.

[FirstOwner69]

Good point!

[RUN GMC]

Classic industries shows them as 88-98 models with the more bent J arm with triangular sail mount.......

https://www.classicindustries.com/pr...ts/tc3822.html

but my 98 GMC has these with the triangular sail mount..........

https://www.rockauto.com/en/moreinfo...304671&jsn=719

.....my 87 GMC has these with the less bent J arm mount but similar to the first ones

https://www.rockauto.com/en/moreinfo...163652&jsn=562

always appreciated how the big 3 auto makers slightly changed parts to work on model to model and gen to gen that if you know how you can make work by swapping and changing parts...........

[hatzie]

The mid 90s G vans used a similar mirror with power adjustment.
I've seen the power dumbo heads with turns in the glass like the T800 mirrors.