2002 GMC Sonoma heater control valve

2002 GMC SONOMA
138,000 MILES • 6 CYL • 2WD • AUTOMATIC
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KENNETH PORTER
  • MEMBER
  • 1 POST
where is the heater control valve located
Sep 19, 2010 at 10:23 AM
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KHLOW2008
  • ✓ASE Certified Mechanic
  • 41,814 POSTS
  • ASE Certified Mechanic
Hi kenneth,

Thank you for the donation.

Heater system is not equipped with any control valve. Heater core has coolant running through all the time and the air temperature actuator is the one controling between heat and A/C.
Sep 19, 2010 at 12:40 PM
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