1. Product Overview
The WeatherTech Custom No Drill Splash Guard MudFlaps are designed to provide protection for your Chevrolet Trailblazer's paint finish from road debris, mud, and grime. These mudflaps are custom-fit for specific vehicle models and are engineered for a secure, no-drill installation, preserving your vehicle's integrity. They are manufactured from a proprietary thermoplastic resin for durability.
This set includes both front and rear mudflaps, ensuring comprehensive coverage for your vehicle.

Image 1.1: A complete set of four WeatherTech Custom No Drill Splash Guard MudFlaps, showing their contoured design.
2. Safety Information
Please read and understand all instructions before installation. Ensure your vehicle is parked on a level surface with the parking brake engaged. For your safety, wear appropriate personal protective equipment, such as gloves and eye protection, if necessary. Do not attempt to modify the mudflaps or use them for purposes other than their intended design.
3. Package Contents
Verify that all components are present before beginning installation:
- Front Driver Side MudFlap (1)
- Front Passenger Side MudFlap (1)
- Rear Driver Side MudFlap (1)
- Rear Passenger Side MudFlap (1)
- Installation Hardware (specific to vehicle model, pre-attached or included)
4. Setup (Installation)
The WeatherTech No Drill MudFlaps are designed for a straightforward installation without the need for drilling into your vehicle's painted metal surface. Installation typically involves utilizing existing factory mounting points.
4.1. Tools Required
- Basic hand tools (e.g., screwdriver, wrench) may be required depending on your vehicle's specific mounting points.
4.2. Installation Steps
- Prepare Vehicle: Park your Chevrolet Trailblazer on a level surface and engage the parking brake. It is generally not necessary to remove the wheels or tires for installation.
- Identify Mounting Points: Locate the existing factory mounting points within the wheel well where the mudflaps will attach. These are typically screws or clips that hold the fender liner.
- Position MudFlap: Align the appropriate mudflap (front/rear, driver/passenger side) with the vehicle's fender contour and the identified mounting points. The mudflaps are custom-molded for a precise fit.
- Secure MudFlap: Using the provided hardware or existing factory fasteners, secure the mudflap firmly to the vehicle. Ensure all fasteners are tightened to prevent movement. Do not overtighten.
- Repeat for Remaining MudFlaps: Follow the same procedure for the other three mudflaps.
- Final Check: After installation, visually inspect all mudflaps to ensure they are securely attached and properly aligned with the vehicle's body.

Image 4.1: A WeatherTech MudFlap precisely fitted and installed on the front wheel well of a vehicle.

Image 4.2: A WeatherTech MudFlap installed on a vehicle's rear wheel, demonstrating its protective function against dirt and debris.
5. Operating (Usage)
Once installed, the WeatherTech MudFlaps operate passively, providing continuous protection for your vehicle's lower body and paintwork. They are designed to deflect road spray, rocks, mud, and other debris that can be kicked up by your tires, especially during driving in adverse conditions or on unpaved roads.
The contoured design ensures that the mudflaps integrate seamlessly with your vehicle's aesthetics while effectively performing their protective function.
6. Maintenance
WeatherTech MudFlaps require minimal maintenance. Regular cleaning will help maintain their appearance and effectiveness.
- Cleaning: Wash the mudflaps with soap and water using a soft brush or cloth. For stubborn dirt or grime, a mild automotive cleaner can be used. Rinse thoroughly with clean water.
- Inspection: Periodically check the mudflaps for any signs of damage or loosening of fasteners. Re-tighten any loose fasteners as needed.
- Avoid Harsh Chemicals: Do not use abrasive cleaners, solvents, or harsh chemicals, as these may damage the material or finish of the mudflaps.

Image 6.1: A close-up view of the durable, textured thermoplastic resin material used in WeatherTech MudFlaps.
7. Troubleshooting
- Mudflaps appear loose: Check all mounting fasteners. Ensure they are securely tightened. If a fastener is stripped or damaged, contact WeatherTech customer support for replacement hardware.
- Mudflaps are not fitting correctly: Double-check that the correct mudflap (front/rear, driver/passenger) is being installed in the correct position. Refer to the installation instructions and ensure proper alignment with the vehicle's contours.
- Excessive dirt accumulation: While mudflaps are designed to deflect debris, extreme driving conditions may still result in some accumulation. Regular cleaning as described in Section 6 will help manage this.
8. Specifications
| Feature | Detail |
|---|---|
| Brand | WeatherTech |
| Model Number | 110130-120130 |
| Vehicle Service Type | 2021-2025 Chevrolet Trailblazer Models |
| Auto Part Position | Front, Rear |
| Installation Type | No-Drill, Screw-In |
| Color | Black |
| Material | Proprietary Thermoplastic Resin |
| UPC | 787765587747 |
9. Warranty and Support
For specific warranty information and customer support, please refer to the official WeatherTech website or contact their customer service department directly. Keep your purchase receipt as proof of purchase.
WeatherTech Contact Information:
- Website: www.weathertech.com
- Refer to the website for phone numbers and email contact options.