Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
Does white wire at brake switch power up when brake pedal is depressed? Does center brake light work?
Has brake switch been replaced?
if you jumper across the orange and white wires, do brake lights come on?
Two possibilities, one is a defective switch. The other is that the switch is not being actuated by the brake pedal/rod. Try taking the switch off, pull rod end off of pedal pin and rotate the rod end 180 degrees, then reinstall the rod and switch and test operation.
Do you see excessive wear at rod end?
The new switch does appear as though it is missing a part. Does black part of switch move separately from white portion?
When switch is put together, does the white portion move and actuate the center spring loaded plunger?
My suggestion is to replace the switch. Try to get the AC Delco replacement part, as this different design is odd and I believe it is the reason you have no brake light operation.
You are welcome. Be sure and keep me posted as to the results.