The ACDelco 15-51317 (GM Genuine Parts 22816195) is a high-quality thermal expansion valve (TXV) designed for the rear A/C systems of General Motors SUVs and crossovers, such as the Chevrolet Traverse, GMC Acadia, and Cadillac Escalade (2013-2020). It acts as a crucial refrigerant metering device to maintain consistent rear cabin cooling.
