GM had these valves on back order but I just got a huge order of them in.
If you are looking for them or know someone who is. you can order them here by clicking this link
10-06-02-001 S 01Feb2010 6
ENGINE OVER HEAT/POOR HEATER PERFORMANCE (INSTALL TWO VALVES IN COOLING SYSTEM)
2007-2009 PONTIAC SOLSTICE GXP 2007-2009 SATURN SKY REDLINE 2007-2009 OPEL GT 2007-2009 DAWWOO G2X ALL EQUIPPED WITH RPO LNF
Click here to download Service Bulletin