Part Type: HVAC Heater Core. 2003 Chevrolet Silverado 3500 RPO Code D07; w/ Custom Center Console; w/ Rear Vents In Center Console;. Aluminum Heater Core. Heater Core. 2004 Chevrolet Silverado 3500 RPO Code D07; w/ Custom Center Console; w/ Rear Vents In Center Console;.
