General HHR Discuss anything related to the Chevy HHR that doesnt seem to fit into the more specific categories below.

No ac ,no blower

Old Nov 19, 2021 | 03:22 PM
  #11  
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Yep changed with new resistor,fan motor . When I couldn’t get power to fan I suspected the controls
Old Nov 19, 2021 | 03:32 PM
  #12  
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If you’ve eliminated those items then take out the control panel, look for burnt connector pins
Old Nov 19, 2021 | 04:37 PM
  #13  
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I'm getting tired of posting the schematic to prove that the power side is to the blower NOT the switch/resisters. The power from the fuse goes directly to the motor. If the fan is not running there will be no power at the switch/resister. The power to the fan motor is ALWAYS hot, if there is no power to the motor the problem is between the fuse and the motor.

To be clear; the switch switches GROUND. The resisters go to GROUND. HOT goes to motor. then wire goes to switch.
Old Nov 19, 2021 | 07:59 PM
  #14  
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Originally Posted by Oldblue
If you’ve eliminated those items then take out the control panel, look for burnt connector pins
thanks
Old Nov 19, 2021 | 08:01 PM
  #15  
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Originally Posted by donbrew
I'm getting tired of posting the schematic to prove that the power side is to the blower NOT the switch/resisters. The power from the fuse goes directly to the motor. If the fan is not running there will be no power at the switch/resister. The power to the fan motor is ALWAYS hot, if there is no power to the motor the problem is between the fuse and the motor.

To be clear; the switch switches GROUND. The resisters go to GROUND. HOT goes to motor. then wire goes to switch.
thanks
Old Nov 23, 2021 | 06:16 PM
  #16  
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Cabin blower

Update on no blower in car. I have checked every fuse, swapped out HVAC control panel,have new resistor and fan. I noticed that when I swapped relay for cooling fan it still did not come on. Could this have a effect on internal fan . I think the cooling fan must have gone out
Old Nov 23, 2021 | 08:25 PM
  #17  
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The cabin blower is on #30 relay on the BCM. The cooling fan relay is underhood. Which one did you swap
Old Nov 25, 2021 | 08:22 AM
  #18  
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Under the hood I swapped the relay,cooling fan still didn’t run. Inside I put in a new relay and it still didn’t run . Checked power line that goes in fan blower with control on no power . I’m wondering if cooling fan is bad it some how affects the blower
Old Nov 25, 2021 | 09:21 AM
  #19  
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No connection. Except the blower must be on for the compressor to run and the compressor turns the cooling fan on.



Old Nov 26, 2021 | 07:10 PM
  #20  
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Thanks going to look at this tomorrow

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