GM Clutch Cycling Switch, Normally Open, M12 x 1.5 ThreadGM Clutch Cycling Switch, Normally Open, M12 x 1. 5 Thread 155643, 15 5643, 52473139 M12 x 1. 5 Thread, 1994 2002 Chevy GMC Trucks, Tahoe, Suburban, Yukon Normally Open, Closes 44 Psi, Opens 24 Psi OEM Numbers 155643, 15 5643, 52473139 Related Parts KA83754 Specifications Product Condition: New 100% brand new and high quality. The product is the same size as the original part, and replacement is simple. One year warranty, shipped within 1 2 days and