2007 Chevy Tahoe

Try this:

Get in the car, close the door and turn the key to the run position (DO NOT START THE ENGINE). When you turn the key to run, pump the gas pedal to the floor three times and wait. The light may flash, you may hear a beep. After about 10 seconds, turn the key off and then back on to see if it reset. If it didn't, let me know. Some (a few) need reset through the radio.

Let me know if this works for you.

Joe