Replacing the windshield on a 2021 Toyota Tundra pickup is a task best left to professionals due to the specialized tools and expertise required. Here’s a general overview of the process:

1. Assessment: The first step is to assess the damage to the windshield. If it’s a small chip or crack, it might be repairable. Larger, more extensive damage typically requires a complete replacement.

2. Gather Supplies: The replacement windshield, sealant, and any necessary parts or materials are gathered. It’s important to use a windshield that is compatible with the make and model of the vehicle.

3. Safety Precautions: Safety precautions should be taken, including wearing safety glasses, gloves, and any other personal protective equipment needed.

4. Removal of Old Windshield:

   • The old windshield is carefully removed. This process involves cutting away the sealant that holds the windshield in place.
   • Special tools are used to prevent damage to the vehicle’s frame during removal.

5. Cleaning and Preparation:

   • The area where the new windshield will be installed is thoroughly cleaned to ensure a proper seal.
   • Any rust, corrosion, or other issues are addressed.

6. Installation of New Windshield:

   • The new windshield is positioned in place, and a suitable sealant is applied to create a waterproof seal.
   • The windshield is pressed into place, and excess sealant is cleaned up.

7. Curing Time:

   • The sealant needs time to cure and set properly. The duration may vary depending on the specific sealant used.

8. Clean-Up and Inspection:

   • The installer should inspect the work to ensure there are no issues with the seal, alignment, or any damage to the vehicle’s paint or frame.

9. Testing:

   • The windshield is tested to ensure it’s properly sealed, and there are no leaks or issues with visibility.

10. Interior Cleaning: Any debris or dirt that entered the vehicle during the replacement should be cleaned from the interior.

It’s essential to choose a reputable auto glass service or technician who is experienced in working with your specific make and model of vehicle, in this case, a 2021 Toyota Tundra pickup. They can also provide advice on any specific features or technologies integrated into the windshield, such as sensors for advanced driver assistance systems (ADAS), which may need calibration or reprogramming after the replacement to ensure proper functioning. Proper installation is critical for your safety and the structural integrity of your vehicle.