Les/Roy;
It is an aftermarket switch. I can't remember if I picked it up at Jim Carters, LMC or Classic Chevy as I have been to all three stores. I can't find a name anywhere on the switch but it does match the picture and wiring diagram in the tech tip. It has a small knob underneath the signal lever that you pull out to activate the switch.
My Suburban did come with signal lights. The original switch was all ate up and had some melted/smoked wires. I decided for the quick easy replacement switch as a temporary measure until I get a whole new wiring harness and install a replacement original switch.
Hopefully I will close the book on this issue tomorrow afternoon. Wish me luck.
