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Blower won't blow on heat or air - TrailBlazer EXT Chevrolet Cars & Trucks

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Check the fuse first thing. If the fuse is good then it is highly likely that the blower motor resistor pack is defective. The blower motor itself can be bad but it is not likely.

Posted on Mar 22, 2011

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6ya6ya
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Posted on Jan 02, 2017

  • 74 Answers

SOURCE: Blower not blowing

the motor is bad, or there is a fuse blown. check all your fuses, if they are all good then replace the blower motor.

Posted on Sep 22, 2008

emissionwiz
  • 75797 Answers

SOURCE: Heat/AC blower not blowing air

heck the blower fan speed control resistor, it is located near the blower motor, they are cheap to replace and the most common cause of this issue

Posted on Nov 24, 2008

  • 9 Answers

SOURCE: air and heat not blowing air through vents

Either Your fan switch is burned out or you blower motor is no good, your blower motor is on the passenger side under the dash. Before you replace any parts you need to check your fuses and relays under your hood and in the car. Usually if your fan switch goes bad you will still get some air blowing thru the vents, so my guess would be blower motor, If its not a blown fuse or relay.

Posted on May 28, 2009

  • 173 Answers

SOURCE: Heater will not blow HOT air

HI"Monitor the flow of the system, by installing a clear hose at the HEATER core assembly, to verify circulation. If necessary, remove the water pump and inspect the impeller for worn fins which could have rust away not producing enough water flow to get water in the heater core.plug heater cores are popular but water pump is more commen

Posted on Sep 23, 2009

  • 11800 Answers

SOURCE: The blower works blowing only cold air no heat? I

The heat is generated by a radiator located in your dash using engine coolant. You don't have heat because the valve that is controlling the coolant flow is closed - either it or the commands that is controlling it are broken - find which and fix them.

Posted on Nov 22, 2009

Testimonial: "Is this valve easily accessible? How do you keep it open? Commands, is that computer realted?"

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