I have a 09 H3T and have done the key in the lock position at lock, holding the lock button until the mode (lock) shows on the cluster. pushing the trip button to go from lock 1, 2 and 3 but tried 1 and 3 and horn still sounds. After getting to lock 1 is there a certain process to save it there? Sorry, very little info on this out there.

 

AI OverviewYour Hummer H3 keyless entry system features a customizable feedback setting that allows you to control whether your horn sounds or lights flash when using your Hummer H3 Keyless Entry Remote. You can easily cycle between these settings—including stealth mode—right from your driver's seat.

How to Program Door Lock/Horn Feedback
To change the feedback settings on your H3, follow these exact steps:

1. Enter Programming Mode: Ensure the engine is OFF and the key is in the LOCK or OFF position.
2. Press Fob Buttons: Simultaneously press and hold the Lock and Unlock buttons on your key fob until the Driver Information Center (DIC) displays "RFA".
3. Navigate Modes: Hold down the DIC reset stem (the trip odometer stem) for about 2 seconds to scroll through the modes.
4. Select Your Mode:

Once you find your preferred mode (listed below), press the control stem for 1 second to select it!

RFA Feedback Modes

• Mode 1 (RFA 1): The park lamps flash when the vehicle is locked and unlocked. The horn does not sound.
• Mode 2 (RFA 2): The park lamps flash and the horn chirps when the vehicle is locked. The lamps flash but the horn does not sound when unlocked.
• Mode 3 (RFA 3): The park lamps flash and the horn chirps when the vehicle is both locked and unlocked.
• Mode 4 (RFA 4): All remote keyless entry feedback is inactive (Stealth Mode). No lights flash and no horn sounds.