Sorry for the Type C question, but does anyone have a source for the height sensing proportioning valve used on the rear brakes of the 1980s full size Chevy trucks? I have a 1986 C30 dually and the idiot previous owner decided to remove the valve.

I've been through all the usual sources and no one lists prop valves. The GM part number is 15538213, which obviously is no longer in the system. I checked PartsVoice - no luck. I'm beginning to think that used is my only option.

And to make this Olds-related, I need the truck to tow Oldsmobiles and chase parts.

 

There is a used one on e-bay right now for $50.00. Don't know if this is a good price

 

That's it exactly. Thanks!