Driver side temperature control clicking on full cold setting?

HEATH01

MEMBER
2012 CHEVROLET IMPALA
V6
2WD
AUTOMATIC
45,000 MILES

Moving it to a warmer setting it stops. But it clicks when the car is off. It looks like from your site the actuator is bad. I did not see a procedure for doing the driver side temperature actuator.

What is its location?
Is there a calibration procedure?

Thanks, Kevin

5 Replies

JACOBANDNICKOLAS

MECHANIC
109,755 POSTS

Hi,

The actuator is on the left side of the HVAC box under the dash. See pic 1 for location.

Pics 2 and 3 are the directions for replacing the actuator. The last pic I attached is for recalibration. The directions indicate the need for a scan tool that can communicate with the different modules, the HVAC module in this case.

Let me know if this helps or if you have other questions.

Take care,

Joe

See pics below.

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Thursday, September 15th, 2022 AT 8:40 PM

HEATH01

MEMBER
16 POSTS

Joe,

Thanks. I replaced the one behind the glove box a couple years ago. I did not have a scan tool to calibrate. Are these two different in some way? Your site mentioned removing the HVAC fuse for 30 seconds, does that also work?
Kevin

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Friday, September 16th, 2022 AT 2:15 PM

JACOBANDNICKOLAS

MECHANIC
109,755 POSTS

Hi,

They should be the same. As far as the recalibration process, try the fuse. Once you reinstall it, turn the key to the run position for approximately a minute and then off. Turn it back on and see if that worked.

While you have the key on and the fuse installed for recalibrating, don't move any of the system controls.

The manuals only show it being done with a scan tool, but this could work.

Let me know.

Joe

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Friday, September 16th, 2022 AT 8:25 PM

HEATH01

MEMBER
16 POSTS

Joe,

I got on Rock Auto where I bought the actuator which was an original GM part. Their info stated no calibration is needed. I did remove the negative battery clamp just in case I touched something wrong under the dash. They don't make it easy to get that gizmo out!
Put it all back together and started the car, it all worked fine except had to reprogram time and date. Also lost radio settings but no big deal there either. Thanks for the help!
Kevin

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Saturday, September 17th, 2022 AT 5:03 PM

JACOBANDNICKOLAS

MECHANIC
109,755 POSTS

Kevin,

You are very welcome. I'm glad to hear it didn't need to be reprogrammed. If everything is working properly, no need to worry about it.

Regardless, take care of yourself, and please feel free to come back anytime in the future. You are always welcome.

Take care,

Joe