Brake warning light on dash is throwing a code for the brake proportion valve. I’m not experiencing any adverse functionality with brakes under the mild conditions that I drive it. But the GM part is discontinued and the AC Delco equivalent part seems to be like hens teeth.
Any thoughts about it, what would you do besides start digging through the You-pull-it for a used replacement? Any secret obsolete part dealers out there I should look into?
The usual suspects are no help (GMC truck dealership, NAPA, Summit, Rock, LMC, Oreilly, Advance Discount, etc..)
ACDelco 172-2040 Brake Proportioning Valve
OEM part number is GM PN 15633165
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