I had my passenger headlight bulb replaced. Now when I go to start my 2009 buick lacrosse, my horn honks, wipers come on, trunk pops open and loud bass static on my radio.

Who replaced the headlamp bulb ? Take it back . Everything your having problems with are all controlled by the BCM - body control module . May have crossed wire's ,shorted etc....
This vehicles BCM functions as the Power Mode Master (PMM). Refer to Power Mode Description and Operation for a complete description of the power mode functions.
Body Control Module
The various body control module (BCM) input and output circuits are described in the corresponding functional areas indicated on the BCM electrical schematics. The BCM functions include the following:
• Battery rundown protection--Inadvertent power--Refer to Interior Lighting Systems Description and Operation .
• BTSI/automatic transmission shift lock control--Refer to Automatic Transmission Shift Lock Control Description and Operation .
• Bulb check--Refer to Instrument Cluster Description and Operation .
• Chimes--Refer to Audible Warnings Description and Operation .
- Check gages
- Content theft deterrent
- Door ajar warning
- Headlamps ON
- Key-in-ignition
- Oil reset
- Park brake warning
- Seat belt not fastened
- Turn signal ON
- Vehicle theft deterrent
• Door lock interface--Refer to Power Door Locks Description and Operation .
• Exterior and interior lighting control--Refer to Exterior Lighting Systems Description and Operation .
- Automatic lighting control
- Backup lamps
- Daytime running lights (DRL)
- Fog lamps
- High/low beam head lamps
- Park brake lights
- Turn hazard lamps
• Gage control--Refer to Instrument Cluster Description and Operation .
• Heated seats--Refer to Heated Seats Description and Operation .
• Horn interface--Refer to Horns System Description and Operation .
• Instrument cluster indicator control--Refer to Instrument Cluster Description and Operation .
• Interior lighting--Refer to Interior Lighting Systems Description and Operation .
• Key-in-ignition sensing--Refer to Audible Warnings Description and Operation .
• Parking brake state sensing--Refer to Brake Warning System Description and Operation .
• Retained accessory power (RAP)--Refer to Retained Accessory Power (RAP) Description and Operation .
• Rear compartment interface--Refer to Power Door Locks Description and Operation .
• Rear defogger--Refer to Rear Window Defogger Description and Operation .
• Remote function control--Refer to Keyless Entry System Description and Operation .
• RFA communication link--Refer to Keyless Entry System Description and Operation .
• Seat belt use sensing--Refer to Seat Belt System Description and Operation .
• Theft deterrent vehicle/content--Refer to Content Theft Deterrent (CTD) Description and Operation or Immobilizer Description and Operation .
• Washer solvent level sensing--Refer to Wiper/Washer System Description and Operation .
• Wiper/washer--Refer to Wiper/Washer System Description and Operation .