I have a 2001 suburban LT. Used to, when you would press the lock button on the key fob the lights would blink once and if you pressed a second time the horn would sound and the lights blink again. Well just out of nowhere, the lights stopped blinking. When I unlock the blink twice like normal, but not when i lock. I really use the lights as a conformation because sometimes I'm in situations where i cannot sound the horn. Anyone have an idea? Is there some type of toggle for the lights? and also, is there a toggle for the horn? can i make the horn sound when i press the unlock also? and can i toggle the horn off completely? If anyone has any information it would be greatly appreciated! Thanks!