Review on 🚦 GM Genuine Parts D1539J Brake Light Switch: Reliable and Efficient for Enhanced Vehicle Safety by Quintin Boner

A relatively easy installation provided a quick fix for intermittent cruise control on a 2009 Suburban. Sometimes the cruise control worked, sometimes not. Sometimes a light side impact on the brake pedal helped engage the cruise control, and sometimes it didn't. Replaced this switch and now the cruise control works reliably. There is a 10mm(?) bolt holding the derailleur to the brake lever along with a clip that fits over the bolt. The clip is a bit difficult to figure out how to remove and reinstall. Otherwise, replacing the switch is easy.