To ensure reliability, purchase GM part # 13398407 Valve Kit,A/C Compressor Pressure Relief. It is sometimes referred to as Buick HVAC Pressure Switch, Buick A/C System Valve Core. Directly from GM, genuine parts are superb with regards to quality, longevity, and fit. Every single part passed stringent quality testing, so you can be sure that it's safe, durable, and built to perform like your original parts. This part fits specific Buick Cascada models.
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