Reduce road noise and heat transfer in your GMC with a precision-fit sound deadener kit designed specifically for your vehicle. Each kit is manufactured to match the original floor pan contours, firewall dimensions, and interior layout of your GMC —delivering a factory-correct installation and a noticeably quieter cabin.

Our GMC sound deadener kits are available in EVA, Mastic with Pad, and Jute materials depending on the original factory specification for your application. Multi-piece kits provide complete coverage of the passenger area, transmission tunnel, and firewall in a single order. All materials are automotive-grade and engineered for long-term durability, heat resistance, and vibration damping—restoring the insulation performance your vehicle had from the factory.

Use the Vehicle Selector above to find the correct sound deadener kit for your year and model, or browse below to explore available options for your GMC . Whether you’re completing a full interior restoration or simply addressing road noise in a daily driver, Factory Interiors makes it easy to achieve a quieter, more comfortable cabin with sound deadener kits proudly made in the USA.

1979-1986 GMC C2500 Reg Cab Sound Deadener 2pc EVA

Restore a quieter, more comfortable cabin in your 1979-1986 GMC C2500 with this 2-piece EVA Sound Deadener kit. Each piece is custom-cut to match the original floor pan, transmission tunnel, and firewall contours of your GMC C2500 for a precise, factory-correct installation. Lightweight and moisture-resistant, EVA significantly reduces road noise and heat transfer.

1979-1986 GMC C3500 Crew Cab Sound Deadener 3pc EVA

Restore a quieter, more comfortable cabin in your 1979-1986 GMC C3500 with this 3-piece EVA Sound Deadener kit. Each piece is custom-cut to match the original floor pan, transmission tunnel, and firewall contours of your GMC C3500 for a precise, factory-correct installation. Lightweight and moisture-resistant, EVA significantly reduces road noise and heat transfer.

$129.52
• SALE $85.95
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1979-1986 GMC C3500 Crew Cab Sound Deadener 3pc EVA
1979-1986 GMC K1500 Sound Deadener 2pc EVA

Restore a quieter, more comfortable cabin in your 1979-1986 GMC K1500 with this 2-piece EVA Sound Deadener kit. Each piece is custom-cut to match the original floor pan, transmission tunnel, and firewall contours of your GMC K1500 for a precise, factory-correct installation. Lightweight and moisture-resistant, EVA significantly reduces road noise and heat transfer.

1979-1986 GMC K2500 Reg Cab Sound Deadener 2pc EVA

Restore a quieter, more comfortable cabin in your 1979-1986 GMC K2500 with this 2-piece EVA Sound Deadener kit. Each piece is custom-cut to match the original floor pan, transmission tunnel, and firewall contours of your GMC K2500 for a precise, factory-correct installation. Lightweight and moisture-resistant, EVA significantly reduces road noise and heat transfer.

1979-1986 GMC K3500 Sound Deadener 2pc EVA

Restore a quieter, more comfortable cabin in your 1979-1986 GMC K3500 with this 2-piece EVA Sound Deadener kit. Each piece is custom-cut to match the original floor pan, transmission tunnel, and firewall contours of your GMC K3500 for a precise, factory-correct installation. Lightweight and moisture-resistant, EVA significantly reduces road noise and heat transfer.

(85 Total Products)