Tools and Materials:
* New Windshield: Ensure it's the correct size and type for your 1990 Suburban.
* Windshield Installation Kit: This typically includes a suction cup tool, a wire cutting tool, a sealant (usually urethane), and possibly a primer.
* Utility Knife: For carefully cutting the old sealant.
* Wire Brush: For cleaning the old sealant residue from the frame.
* Cleaning Solvent: For cleaning the frame and the new windshield. (Use a solvent designed for this purpose - not just any cleaner.)
* Safety Glasses: Absolutely essential to protect your eyes from flying glass and sealant.
* Gloves: To protect your hands.
* Putty Knife/Plastic Trim Removal Tools: For removing interior trim pieces that may interfere with access.
* Shop Towels/Rags: Many of them.
* Jack Stands (optional but recommended): To support the vehicle safely during the repair.
* Wet/Dry Vacuum: For cleaning up debris.
Steps:
1. Preparation: Park the Suburban on a level surface. Disconnect the battery's negative terminal. Carefully remove any interior trim that obstructs access to the windshield.
2. Removing the Old Windshield:
* Cut the Old Sealant: Using the utility knife, carefully cut through the old urethane sealant around the perimeter of the windshield. Work slowly and deliberately to avoid scratching the paint.
* Remove the Windshield: Use the suction cup tool to gently pull the windshield outward. This may require some prying, but be careful not to break the glass. Once loosened, slowly work it out. Expect some resistance.
* Clean the Frame: Thoroughly clean the frame of any remaining sealant and debris using the wire brush, solvent, and shop towels. The frame must be completely clean for the new sealant to adhere properly.
3. Preparing the New Windshield: Clean the new windshield's edges thoroughly with the appropriate solvent.
4. Applying the Sealant: Apply a bead of urethane sealant to the frame according to the instructions provided with your installation kit. This is crucial for a proper seal. Don't skimp on the sealant!
5. Installing the New Windshield: Carefully position the new windshield into the frame, ensuring it sits evenly. Use the suction cups to hold it in place while the sealant cures.
6. Cleaning Up: Clean any excess sealant that squeezes out.
7. Curing: Allow the sealant to cure completely according to the manufacturer's instructions (usually 24-48 hours). Avoid driving the Suburban until the sealant is fully cured.
8. Reinstallation: Once the sealant is cured, reinstall any removed interior trim. Reconnect the battery.
Important Considerations:
* Safety First: Always wear safety glasses and gloves. Shattered glass is a serious hazard.
* Professional Help: This is a complex job. If you are not comfortable with the level of precision and risk involved, hire a professional auto glass installer. It will save you time, potential frustration, and potential damage to your vehicle.
* Sealant Choice: Use only high-quality urethane sealant designed for automotive windshields.
* Weather Conditions: Avoid working in extremely hot or cold temperatures.
This is a simplified overview. A detailed, step-by-step guide with pictures and videos is highly recommended if you plan to attempt this yourself. Search online for "1990 Suburban windshield replacement" along with videos to better understand the process. Remember, a poorly installed windshield can compromise your safety and the structural integrity of your vehicle. Professional installation is the safest and most reliable option.
