Roll Down Windows with Remote?

[TightLines612]

I live in Florida and being able to vent the hot air out of the cabin before getting in is a big help. On my last car I was able to do this by holding down the unlock button. It did NOT come like this from the factory but was "unlocked" by accessing the ECU.

 

Anyone know if this is possible on the new Sierras?

[TJay74]

Nope, not an option. nothing in the ECM or TCM that we could access with software controls any of those functions. They are controlled by the BCM which we cant access. Plus the lock/unlock function of the fob is already designated to control the factory electric folding mirrors.

[TightLines612]

Unfortunate but thanks for the detailed response.

 

Windows up with AC blowing it is then.