1. Introduction
This manual provides comprehensive instructions for the proper installation, operation, and maintenance of your new Brock Halogen Combination Headlight Assemblies. Adhering to these guidelines will ensure optimal performance and longevity of the product.
Product Model: 1221-0124LR
Compatibility:
- Chevrolet Silverado 1500: 2007, 2008, 2009, 2010, 2011, 2012, 2013
- Chevrolet Silverado 1500 Hybrid: 2009, 2010, 2011, 2012, 2013
- Chevrolet Silverado 2500/3500 HD: 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014
Image 1.1: Brock Halogen Combination Headlight Assemblies (Driver and Passenger Side).
2. Safety Information
Always prioritize safety when working on your vehicle. Failure to follow safety precautions can result in injury or damage to the vehicle.
- Ensure the vehicle is turned off, the parking brake is engaged, and the battery is disconnected before beginning any installation.
- Wear appropriate personal protective equipment, including safety glasses and gloves.
- If you are unsure about any step of the installation process, consult a qualified automotive technician.
- Keep all tools and small parts away from children.
3. Package Contents
Your Brock Headlight Assembly package includes the following components:
- One (1) Driver Side Halogen Combination Headlight Assembly (Lens and Housing)
- One (1) Passenger Side Halogen Combination Headlight Assembly (Lens and Housing)
- Bulbs (typically pre-installed, verify upon receipt)
Inspect all components upon receipt to ensure they are complete and undamaged. If any parts are missing or damaged, contact customer support immediately.
4. Setup and Installation
These headlight assemblies are designed for direct replacement with no modification needed. The following steps provide a general guide for installation. Specific vehicle procedures may vary slightly.
- Prepare the Vehicle: Park the vehicle on a level surface, engage the parking brake, and turn off the engine. Disconnect the negative terminal of the vehicle's battery to prevent electrical shorts.
- Access the Headlight Assembly: Depending on your Silverado model, you may need to remove the grille, bumper cover, or fender liner to access the headlight mounting bolts and electrical connectors. Refer to your vehicle's service manual for specific removal procedures.
- Remove Old Headlight:
- Locate and remove the mounting bolts or clips securing the old headlight assembly.
- Carefully pull the old headlight assembly away from the vehicle.
- Disconnect all electrical connectors from the bulbs and the main harness.
- Install New Headlight:
- Connect the electrical harness to the new Brock headlight assembly. Ensure all connections are secure.
- Position the new headlight assembly into the vehicle's opening, aligning it with the mounting points.
- Secure the headlight assembly with the original mounting bolts or clips. Do not overtighten.
- Reassemble Vehicle: Reinstall any removed grille, bumper cover, or fender liner components.
- Reconnect Battery: Reconnect the negative terminal of the vehicle's battery.
Image 4.1: Front view of a single headlight assembly, showing lens and reflector design.
Image 4.2: Rear view of the headlight assembly, illustrating the bulb sockets and wiring harness.
Image 4.3: Detailed view of the multi-pin electrical connector for the headlight assembly.
5. Operating Instructions
After installation, perform the following checks to ensure proper operation:
- Functionality Test: Turn on your vehicle's headlights (low beam and high beam), turn signals, and parking lights. Verify that all functions of both new headlight assemblies are working correctly.
- Alignment Check: Park the vehicle on a level surface facing a wall approximately 25 feet away. Turn on the low beams and observe the light pattern. The light beams should be level and properly aimed. If adjustment is needed, locate the headlight aiming screws (typically on the top or side of the headlight housing) and adjust them according to your vehicle's specifications.
6. Maintenance
Regular maintenance helps preserve the clarity and functionality of your headlight assemblies.
- Cleaning: Clean the headlight lenses regularly with a mild automotive soap and water. Avoid abrasive cleaners or harsh chemicals, as these can damage the lens surface.
- Bulb Replacement: If a bulb burns out, replace it with a bulb of the correct type and wattage specified for your vehicle. Refer to your vehicle's owner's manual for bulb specifications and replacement procedures. Disconnect the battery before replacing bulbs.
- Inspection: Periodically inspect the headlight assemblies for any signs of damage, cracks, or moisture intrusion. Address any issues promptly to prevent further damage.
Image 6.1: Close-up of a bulb socket, indicating where bulbs are inserted and secured.
7. Troubleshooting
If you encounter issues with your headlight assemblies, consider the following common troubleshooting steps:
- Headlight Not Working:
- Check the bulb: Ensure the bulb is properly seated and not burnt out.
- Check the fuse: Inspect the relevant fuse in your vehicle's fuse box. Replace if blown.
- Check electrical connections: Ensure all connectors are securely attached and free of corrosion.
- Dim or Flickering Light:
- Inspect the bulb for signs of damage or aging.
- Verify proper voltage at the headlight connector.
- Check for loose or corroded ground connections.
- Moisture Inside Headlight:
- Small amounts of condensation can occur due to temperature changes and typically dissipate.
- If significant water accumulation or persistent condensation occurs, check for cracks in the housing or improper sealing. Ensure all caps and covers are securely in place.
If these steps do not resolve the issue, contact Brock customer support or a certified mechanic.
8. Specifications
| Feature | Specification |
|---|---|
| Brand | Brock |
| Model Number | 1221-0124LR |
| OEM Part Number | 22853027, 22853028 |
| ABPA Partslink Number | GM2502280 |
| Auto Part Position | Front |
| Lens Color | Clear |
| Vehicle Service Type | Car, Truck |
| Item Weight (per assembly) | Approximately 8 pounds (16 pounds for the set) |
| Product Dimensions (each) | Approximately 19 x 19 x 17 inches |
| Assembly Required | No |
| Automotive Fit Type | Vehicle Specific Fit |
9. Warranty and Support
Your Brock Headlight Assemblies are protected by a 1-year limited warranty against manufacturing defects. This warranty covers the lens and housing components under normal use.
For warranty claims, technical assistance, or any questions regarding your product, please contact Brock customer support through their official channels or the retailer from whom the product was purchased. Please have your purchase receipt and product model number (1221-0124LR) available when contacting support.