How to Install a Sun Roof in a Chevy Avalanche

Installing a sunroof in the Chevy Avalanche is easier than many vehicles but still requires special tools and precision cutting skills. The Chevy Avalanche is capable of having a 24 inch wide by 40 inch long sunroof installed.

Things You'll Need

• Sunroof kit
• Sheet or tarp
• Screwdrivers
• Drill and bits
• Sheet metal shears
• File
• Metal primer
• Sealant
• Razor knife

Instructions

1. Lay out the parts and tools in the work area and read the installation manual carefully. Place a sheet or tarp over the truck's interior to protect the seats and dashboard.

2. Hold the shade tray up to the roof interior and poke a screwdriver through the headliner at each corner using enough pressure to dimple to metal roof slightly. Tape the template to the top of the roof using the dimples as a guide. Remove the headliner carefully and set it aside.

3. Drill a starter hole through one of the dimples and cut out the roof with metal shears. Use the template as a guide making sure to be as precise as possible. Smooth the edges with a file and test the sunroof frame for fit. Make any adjustments needed and coat the bare metal with metal primer to resist rusting.

4. Clean the bottom of the sunroof and run a bead of sealant around the lip. Set the sunroof in place and connect the clamping ring and screws taking care not to overtighten or strip the hardware.

5. Assemble the rest of the sunroof per the manual and clean up any excess sealant with a rag. Replace the headliner on the Avalanche, making alterations with a razor knife if needed and clean the new glass panel.

Tips & Warnings

• Poor quality sunroof hardware is prone to leaking, wind noise and rattling.

• Installing a sunroof improperly in a Chevy Avalanche can cause irreparable damage to the truck.

Resources

• Universal and model specific sunroofs and accessories