HVAC blower reduces output during phone calls. Is this normal?

[djsassan]

Quick question - I can have the AC on full blast, but when I go to make a call it reduces down to the lowest speed. I would assume this is for noise reduction.

1) Is this normal and does your vehicle do this?

2) Is there a way to override this?

 

[Trey Hardy]

Quick question - I can have the AC on full blast, but when I go to make a call it reduces down to the lowest speed. I would assume this is for noise reduction.

1) Is this normal and does your vehicle do this?

2) Is there a way to override this?

Our crew van does the same thing it’s normal but I don’t know how to override it

 

[Micahsd]

It is normal. Was normal on my last two new GM vehicles.

I’m not aware of a way to override other than transfer the call from Bluetooth back to the handset and hold it up to your ear.

 

[OR VietVet]

Remember when the radio volume would increase a little when you accelerated hard?

 

[iamdub]

Remember when the radio volume would increase a little when you accelerated hard?

I remember!
SCV- Speed-Compensated Volume. And it was easily adjusted or defeated by a knob behind the main volume knob.

 

[djsassan]

Thanks. So annoying on a hot day!

 

[Silverado4x4]

Quick question - I can have the AC on full blast, but when I go to make a call it reduces down to the lowest speed. I would assume this is for noise reduction.

1) Is this normal and does your vehicle do this?

2) Is there a way to override this?

My 2019 Silverado does this also so does our 2022 Tahoe

 

[Doubeleive]

I remember!
SCV- Speed-Compensated Volume. And it was easily adjusted or defeated by a knob behind the main volume knob.

practically all of my vehicles have this option, both oem and aftermarket.
and the ac fan speed reduction is circumvented on my denali with a aftermarket radio but I am sure it could made to work again with programming thru the maestro rr
the 12, 16 & 18 have automatic volume (can be turned on or off) might also be a option on the 05 oem radio but it's sitting on a shelf. the fan speed reduction, may or may not be able to be turned off I haven't checked, but most likely not

 

[gooffeyguy]

I remember!
SCV- Speed-Compensated Volume. And it was easily adjusted or defeated by a knob behind the main volume knob.

Yup, my 2001 has that volume knob setup

 

[MN1965]

It's not a permanent over ride, but manually turning the fan control will bring mine back up during a call. It takes it out of "auto" HVAC mode.