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07 savanna van ac works until van gets up to temp. New

Customer Question
07 savanna van ac...

07 savanna van ac works until van gets up to temp. New actuator but no movement at blend

Mechanic's Assistant: Have you checked the Freon level?

Full blows cold tubes cold compressor on

Mechanic's Assistant: What is the make/model of your car?

07 savanna

Mechanic's Assistant: Are you fixing your vehicle yourself? What have you tried so far?

Yes and I replaced blend door actuator and manual heater controls

Submitted: 9 months ago.Category: GMC
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Answered in 2 hours by:
8/1/2017
GMC Mechanic: Chris (aka-Moose), GMC Technician replied 9 months ago
Chris (aka-Moose)
Chris (aka-Moose), GMC Technician
Category: GMC
Satisfied Customers: 51,537
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Welcome, I'm Chris (aka Moose).

  • Although I work here everyday, please understand it is not all day and rarely morning time.
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I need a little better explanation. What happens once the van gets up to temp? Does the air coming out of the dash get warm or hot?

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Customer reply replied 9 months ago
Hot the blend actuator isn't moving and I put new one in
GMC Mechanic: Chris (aka-Moose), GMC Technician replied 9 months ago

So once the vehicle gets up to temp, with the AC still on and the engine on, the dash vents are blowing out heat but the AC lines going into the firewall are freezing cold?

With the blend door actuator off, can you manually move the door and change from heated air, to outside air temp, to AC cold air?

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Customer reply replied 9 months ago
I plugged in a new actuator not hooked to vehicle and it doesn't move when controls are moved
GMC Mechanic: Chris (aka-Moose), GMC Technician replied 9 months ago

At the actuator confirm you have black wire ground, brown wire power. If those are good and the light blue wire is not broken, then the actuator is not moving from a faulty HVAC controller.

Now that I have posted a partial or complete answer, you will see you can rate me. The deposit you have already paid is not transferred to me until you rate me. I would like to receive nothing less than 5 star excellent ratings. So if we are not there yet, please reply and let me help more. If you're not pleased, let me know because rating bad does not result in a refund, there are better options. Rating now will not close this post nor prevent replying. Thanks Chris

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Customer reply replied 9 months ago
I have power at blue with key on no power to brown and ground on black
GMC Mechanic: Chris (aka-Moose), GMC Technician replied 9 months ago

Below the left front seat in the body fuse block. HVAC1 fuse 9 is what powers the brown wire to the blend actuator. Is this fuse good and powered?

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GMC Mechanic: Chris (aka-Moose), GMC Technician replied 9 months ago

Hello Chris here again,

I am checking in to make sure you got everything you expected from my answer. The option to rate my response or reply is still available. I want to make sure you were pleased with what you paid for.

Thanks Chris

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