Frequently Asked Questions About GMC Brigadier Truck Deck Plates & Air Line Boxes

What years and models of GMC Brigadier trucks are these deck plates compatible with?

Our deck plates and air line boxes are designed to fit GMC Brigadier models from 1988 through 2002. However, compatibility can vary based on specific cab configurations and whether you have a day cab or sleeper model. We recommend checking your truck's VIN and measuring your existing deck plate mounting points before ordering. If you're unsure about fitment, our customer service team can help verify compatibility with your specific truck configuration.

Are these deck plates made of steel or aluminum, and how thick is the material?

We offer both steel and aluminum options depending on your needs. Our steel deck plates are typically 3/16" thick with a durable powder-coated finish to resist rust and corrosion. Aluminum options are usually 1/4" thick diamond plate, providing excellent strength while keeping weight down. Steel plates are more budget-friendly and extremely durable, while aluminum offers superior corrosion resistance and weight savings for fuel efficiency.

Do I need to drill new holes or modify my truck to install these deck plates?

Most of our deck plates are designed as direct replacements using existing mounting points on your GMC Brigadier. Installation typically requires removing the old plate and bolting the new one in place using the factory holes. However, some custom configurations or aftermarket air line box additions may require drilling. We include detailed installation instructions with each product, and mounting hardware is typically included unless otherwise noted in the product description.

What finish options are available, and how do they hold up to weather and road chemicals?

We offer several finish options including polished aluminum, mill finish aluminum, black powder-coated steel, and chrome-plated steel. Polished aluminum requires regular maintenance but provides the classic shine many drivers prefer. Powder-coated finishes offer excellent protection against rust, road salt, and UV damage with minimal maintenance. Chrome options provide a mirror finish but may require more frequent cleaning to maintain appearance. All finishes are tested for highway durability and weather resistance.

Can I mount additional accessories like tool boxes or air tanks on these deck plates?

Yes, our deck plates are designed to support various accessories. Most plates can accommodate standard tool boxes, air tanks, and additional air line connections. Load capacity varies by material and thickness - steel plates typically support 300-500 pounds when properly mounted, while aluminum plates support 200-400 pounds. Always ensure the combined weight of accessories doesn't exceed your plate's rating. Pre-drilled accessory mounting holes are available on some models, or you can drill custom mounting points as needed.