1984-91 Square Body Chevy & GMC Truck Rear Glass Seal with Trim Channel, for Original Sliding Rear Window

Keep your original factory sliding rear window sealed from the elements with this 1984-91 Square Body Chevy & GMC Truck Rear Glass Seal with Trim Channel, for Original Sliding Rear Window. Designed specifically for original GM sliding rear windows, this premium rubber seal restores the weather tight fit your truck had when it left the factory. This seal is not designed for aftermarket sliding rear window assemblies.

Over the years, original rear window seals become hard, cracked, and shrink from exposure to sun, heat, and weather. A deteriorated seal can allow water leaks, wind noise, dust, and air infiltration into your cab, potentially leading to rust and interior damage. Replacing the seal helps restore a tight, secure fit while protecting your truck's interior.

Manufactured from high-quality automotive rubber and molded to original GM specifications, this seal fits around both the rear glass and the cab opening for proper alignment and long-lasting performance. The built-in trim channel accepts the factory locking strip, allowing you to retain the original appearance of your Square Body truck. Locking strip is sold separately.

For added convenience, we've also provided a detailed installation video under the Video tab to help guide you through the replacement process.

Key Features

• Fits 1984–1991 Chevy & GMC Square Body trucks, with the original sliding rear window
• Not compatible with aftermarket sliding rear windows
• Premium automotive rubber construction
• Restores a weather tight seal around the rear glass
• Helps eliminate water leaks, wind noise, dust, and air intrusion
• Correct factory style trim channel for locking strip installation
• Manufactured to original GM dimensions for proper fit
• Locking strip sold separately 1973-87 Square Body Chevy & GMC Truck Chrome Rear Window Trim Lockstrip w/2 Corner Joints
• Installation video available

This is a great piece but if you are looking to replace the complete rear sliding window. I recommend taking a look at 1973-87 Square Body Full Size Chevy & GMC Truck Rear Sliding Rear Window Kit. Also you may need some tools to install 1973-87 Square Body Chevy & GMC Truck Windshield & Rear Window Seal Lockstrip Tool, 1973-87 Square Body Chevy & GMC Truck Windshield & Rear Window Seal Chisel Stick, and 1973-87 Square Body Chevy & GMC Truck Weatherstrip Small Hook Tool with Ball.