2019 GMC Savana 3500 Engine: 6.0L V8;. 1997 GMC Savana 3500 4 Ports;. 1998 GMC Savana 3500 4 Ports;. 1999 GMC Savana 3500 4 Ports;. 2000 GMC Savana 3500 4 Ports;. Vacuum Closes Bypass Heater Valve. Heater Valve.
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FOUR SEASONS HVAC Heater Core Fits 1987-1989 GMC R2500