2003 Blazer 4dr No Defrost/Floor Heat
#1
08-26-2012, 07:29 PM
2003 Blazer 4dr No Defrost/Floor Heat
Blower works, AC works, Heat works, No Defrost or Floor Heat.
How can I tell if the blend door actuator is faulty or if it is the control switch (AC/Heater/Defrost blower door selector switch. There is adequate vacuum to the control switch itself, but rotating the switch does nothing other than turning On/Off the AC or Heater. I disconnected a vacuum hose (Grery) from an actuator and have no vacuum in the hose regardless of where the switch is turned. Does that mean the switch is leaking vacuum and is bad?
How can I tell if the blend door actuator is faulty or if it is the control switch (AC/Heater/Defrost blower door selector switch. There is adequate vacuum to the control switch itself, but rotating the switch does nothing other than turning On/Off the AC or Heater. I disconnected a vacuum hose (Grery) from an actuator and have no vacuum in the hose regardless of where the switch is turned. Does that mean the switch is leaking vacuum and is bad?
Last edited by 3D_Illustrator; 08-26-2012 at 10:57 PM.
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