Hidden tricks

[apb2148]

Does GM have any hidden tricks that the vehicle can do? I have seen a lot of these with Toyota, such as you can press a certain sequence on the key fob and it will roll all the windows down at once. Thanks!

 

[fiatdale]

I think if you press the panic button, and say biggie smalls 3 times, this happens:

 

[BirchyBoy]

Mine has the opposite tricks. I have to hit the fob 3-4 times to get the doors to lock.

In anyone uncovers the special key sequence to improve the gas mileage, let me know.