Review on 🚗 GM Genuine Parts Parking Brake Pump Motor Switch - Part Number 15961566 by Tim Rushing

This is GM's infamous green parking brake pressure sensor. I have a 2000 Workhorse P32 and this is it. Trans liquid flows through them. It's behind the armor plate just behind the gearbox. What a terrible design! At first the brake wouldn't release. We pulled the plug and directly applied 12V to finally turn it on. It has to turn on and withstand 1400psi of pressure to release the brake. Only passing on information that ruined our weekend.