2007 Impala 3.5 no heat

Tiny
DAN010486
  • MEMBER
  • 2007 CHEVROLET ASTRO
  • 3.5L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 70,000 MILES
Hello I have a 2007 Impala with the 3.5. The other day my heat was going in and out and now it has completely gone out I have no heat at all but the cars temp will stay normal and not overheat. Both radiator hoses are hot and both heater hoses are hot as well I'm at a loss
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Saturday, January 9th, 2016 AT 7:43 AM

11 Replies

Tiny
HMAC300
  • EXPERT
Try pulling the hvac fuse inside car it may reset the actuator otherwise the actuator may be bad which you would need to check for power there. There are two one for lh and rh. Rh pictured. If no power scan for codes.
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Saturday, January 9th, 2016 AT 9:13 AM
Tiny
DAN010486
  • MEMBER
Ok update. Upper rad hose is at around 125* lower hose is at 54*. Heater hose is 141* and 145*. Car temp is half way up and been running for about 20 mins
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Saturday, January 9th, 2016 AT 10:39 AM
Tiny
HMAC300
  • EXPERT
If it doens'tget any warmer change your thermostat
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Saturday, January 9th, 2016 AT 1:04 PM
Tiny
DAN010486
  • MEMBER
Changed the tstat and still no heat
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Saturday, January 9th, 2016 AT 2:07 PM
Tiny
HMAC300
  • EXPERT
Then check what I said in first reply
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Saturday, January 9th, 2016 AT 4:10 PM
Tiny
DAN010486
  • MEMBER
You were correct it was the rh air actuator. Thank you so much
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Saturday, January 9th, 2016 AT 4:50 PM
Tiny
DAN010486
  • MEMBER
Hello HMAC300. Ok I'm not getting full heat. When I installed the new actuator I had to manually adjust the door or the actuator would slide on l I don't know if the door is fully opening or what. Do I need to reprogram the actuator or reset it or what? Thank you
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Monday, January 11th, 2016 AT 5:09 PM
Tiny
DAN010486
  • MEMBER
Forgot to add this is a single zone so there is only 1 actuator
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Monday, January 11th, 2016 AT 5:13 PM
Tiny
HMAC300
  • EXPERT
Check to see if door is broken it may not be working right, take the actuator off to do this.
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Tuesday, January 12th, 2016 AT 6:11 AM
Tiny
DAN010486
  • MEMBER
When the actuator is off the door turns with some force so it doesn't seem like it's broken. I've read some places you need to re calibrate the new actuator with the tech 2
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Tuesday, January 12th, 2016 AT 1:26 PM
Tiny
HMAC300
  • EXPERT
Pulling the hvac fuse inside car with key on and leaving it out for 60 seconds resets all actuators
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Tuesday, January 12th, 2016 AT 3:10 PM

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