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Working on a customers car. First time dealing with this setup. My plastic cap was broken and the actuator was missing. Did not find a lot of information at first. But this thread kept showing up so I thought I'd add my findings.
My replacement switch was not drilled directly in the center. I wanted to leave a little more martial to work with. I drilled the the mount hole to 5/16 instead of 11/32. I then turned the bolt shoulder down to 5/16 using a file and drill chucked into a vise. Mated them together with some cutting compound. Cleaned and greased. Works great.
I'd like to add the dimmer actuator to the list of info. With mine all broken and missing, I had no idea what took up the gap
Little plastic black spacer between the dimmer lever and the dimmer rod. It rides a bump in the cover to actuate properly. (Grease helped keep it in place during install.)
Looks like the cover broke and spit out the actuator part. Never to be seen again. This has been broken for years.
I need one of those brackets if you still have any available.
Originally Posted by bmotojoe
T&T column only:
Now if it is broken pivot bracket any 77-86 GM tilt column pivot bracket can be used, just need to drill out the pivot bolt hole from 13/64" to 11/32"
There were a few design changes made to strengthen the pivot bracket over the years, these brackets shown are all like gen 3 or the latest design used by GM.
Years ago I personally knew a GM parts manager for a local Chevrolet dealership and he gave me these.
Told me to keep them that I might need them later for my 77...
That's how I know the story about the commonly used GM pivot bracket.
The switch in my t&t column broke. It is this cast piece that broke. The actual switch still works. Lmk if you can help me. Thanks.
