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2018 GMC Sierra 1500

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A custom-fit vehicle-specific sub solution for your Sierra 1500 saves space and offers a finish that is unrivaled.

Overview Upgrade your Stereo Upgrade your Speakers Add a Subwoofer Add an Amplifier Digital Sound Processors Audio Installation & Accessories Add a Backup Camera Add Remote Start Dads & Grads Sale

Sub Boxes Custom-fit for your 2018 Sierra 1500 for 2018 GMC Sierra 1500

A Sierra 1500 custom-fit sub box is the best way to add bass without sacrificing space. You'll get a box that looks and sounds great and matches the factory "look" to a T.  We carry vehicle specific solutions like the NVX BOOST Boxes, JL Audio StealthBoxes, MTX Thunderforms and more.

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Number of Subwoofers
This value represents the number of subwoofers that the enclosure accommodates or that are included in the package or bundled kit.
Subwoofer Size
Refers to the diameter of the subwoofer, measured in inches.
Box Type
Represents the style of the enclosure. Be sure to purchase the appropriate enclosure type and internal volume that will be compatible with your subwoofer's recommendation.

Sealed - Sealed boxes are those that have no holes or vents in it. The only hole in a sealed box is where the subwoofer is installed. Smaller sealed boxes require more power than a larger sealed box. They provide a tight, accurate bass, while the larger sealed enclosures provide a "boomier" and louder bass.

Ported / Vented - Ported/Vented Enclosures provide an even boomier, louder bass, but less accurate then a small, sealed box. Ported enclosures typically require more airspace per sub and also less power output from an amplifier to perform correctly.

Bandpass - Bandpass enclosures make subwoofers perform efficiently, but loose. The bass is not as "boomy" as a ported enclosure nor as punchy as a sealed enclosure. Bandpass enclosures work well with lower to mid-level subwoofers.
Type of Enclosure
Some of our Vehicle Specific enclosures are loaded with a subwoofer and an amplifier, some are only loaded with a subwoofer, while some are empty boxes.
Total Peak Power Handling
This is the Total Peak Power handling of all the subwoofers included in the package or enclosure.

If the loaded enclosure or amplifier and subwoofer package includes more than a single subwoofer, then this is the total peak power handling for all of the subs combined.

Peak power handling refers to the amount of power a speaker can handle during a brief musical burst. The RMS power range figure is a much more reliable rating for determining the speaker's power requirements.
Total RMS Power Handling
This is the total RMS power handling of all the subwoofers included in the package or enclosure.

If the loaded enclosure or amplifier and subwoofer package includes more than a single subwoofer, then this is the total RMS power handling for all of the subs combined.

The RMS power is the amount of power the speaker requires to operate safely and properly. RMS Power Handling refers to the amount of power a speaker can handle on a continuous basis. We recommend giving your subwoofer(s) 75% - 90% of the recommended RMS rating.
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Final Wired Impedance
This is the final impedance of the system as the amplifier will see it. If the final impedance is for two sets, it means that the enclosure has two sets of terminals at the listed impedance.
Box Finish
The material used on the outside of the box. Most boxes are carpeted to prevent exterior scratches; however vinyl is popular as it can often be color-matched to a near exact look of your leather factory interior.
Condition
Availability
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Kicker KGMDL7T12 (51KGMDL7T122)

1200W RMS Loaded Dual 12" Sealed Truck Enclosure for select 2008-2021 Silverado 2500 HD / 1500 / 3500 HD / 1500 LD and Sierra 2500 HD / 1500 Denali / 3500 HD / 1500 and Sierra Denali

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Kicker KGMDL7T12 (51KGMDL7T122)

1200W RMS Loaded Dual 12" Sealed Truck Enclosure for select 2008-2021 Silverado 2500 HD / 1500 / 3500 HD / 1500 LD and Sierra 2500 HD / 1500 Denali / 3500 HD / 1500 and Sierra Denali

• Sealed enclosure with 2 12" Solo-Baric L7T Series Subwoofer
• Compatible with select 2008-2021 Silverado 2500 HD / 1500 / 3500 HD / 1500 LD and Sierra 2500 HD / 1500 Denali / 3500 HD / 1500 and Sierra Denali
• 1200 watts RMS
• Final Impedance: 2-ohm
• Dimensions: 15-1/2" L x 7-7/16" H x 52" W

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Atrend U-8DV

Empty Dual 8” Vented Enclosure for select 2008-2023 Sierra and Silverado 1500 / 3500 HD / 2500 HD

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Atrend U-8DV

Empty Dual 8” Vented Enclosure for select 2008-2023 Sierra and Silverado 1500 / 3500 HD / 2500 HD

• 8" Dual Ported Subwoofer Enclosure
• 1" Medium Density Fiberboard (MDF) construction
• Total box volume: 2.40 cubic feet
• Compatible with select 2008-2023 Sierra and Silverado 1500 / 3500 HD / 2500 HD

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NVX Empty BOOST Box - 2008-2018 Chevy Silverado/GMC Sierra - UBE-GM-08SLVCC-S212

For select 2008-2018 vehicles from GMC, Chevrolet Crew Cab Trucks - Dual 12" Empty BOOST Sealed Truck Enclosure with RGB LED Lighting

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NVX Empty BOOST Box - 2008-2018 Chevy Silverado/GMC Sierra - UBE-GM-08SLVCC-S212

For select 2008-2018 vehicles from GMC, Chevrolet Crew Cab Trucks - Dual 12" Empty BOOST Sealed Truck Enclosure with RGB LED Lighting

• Custom Fit Empty Dual 12" BOOST Sealed Truck Enclosure
• Compatible with select 2008-2018 vehicles from GMC, Chevrolet
• 3/4" Medium Density Fiberboard (MDF) construction
• Illuminated etched plexiglass with RGB LED lighting
• Total box volume: 1.8 cubic feet (common chamber)

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• Custom Fit Empty Dual 12" BOOST Sealed Truck Enclosure
• Compatible with select 2008-2018 vehicles from GMC, Chevrolet
• 3/4" Medium Density Fiberboard (MDF) construction
• Illuminated etched plexiglass with RGB LED lighting
• Total box volume: 1.8 cubic feet (common chamber)

Atrend A181-12CPV

Empty Single 12" Vented Rear Underseat Enclosure for select 2007-2021 Silverado 2500 HD / 1500 / 3500 HD / 1500 HD / 1500 LD and Sierra 2500 HD / 1500 / 3500 HD / 1500 Denali / 1500 HD and Sierra Denali

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Atrend A181-12CPV

Empty Single 12" Vented Rear Underseat Enclosure for select 2007-2021 Silverado 2500 HD / 1500 / 3500 HD / 1500 HD / 1500 LD and Sierra 2500 HD / 1500 / 3500 HD / 1500 Denali / 1500 HD and Sierra Denali

• 12" Single Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Total box volume: 0.83 cubic feet
• Compatible with select 2007-2021 Silverado 2500 HD / 1500 / 3500 HD / 1500 HD / 1500 LD and Sierra 2500 HD / 1500 / 3500 HD / 1500 Denali / 1500 HD and Sierra Denali

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Alpine R2-DB8V-TRK

2000W Peak (700W RMS) Loaded Dual 8" R-Series Vented Truck Enclosure for select 2007-2024 vehicles from Ford, Jeep, Ram

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Alpine R2-DB8V-TRK

2000W Peak (700W RMS) Loaded Dual 8" R-Series Vented Truck Enclosure for select 2007-2024 vehicles from Ford, Jeep, Ram

• Ported truck enclosure with 2 8" R Series Subwoofer
• 350 watts each RMS (1000 watts each Peak)
• Final Impedance: 2-ohm
• Dimensions: 13-3/4" L x 8-3/4" H x 40" W x 40" W2

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JL Audio Stealthbox® SB-GM-3GSLVCNSL/10TW1

Custom fit subwoofer enclosure for select 2014-2018 Silverado 2500 HD / 1500 / 3500 HD and Sierra 3500 HD / 1500 / 2500 HD Front Bucket Seats and OEM Console

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JL Audio Stealthbox® SB-GM-3GSLVCNSL/10TW1

Custom fit subwoofer enclosure for select 2014-2018 Silverado 2500 HD / 1500 / 3500 HD and Sierra 3500 HD / 1500 / 2500 HD Front Bucket Seats and OEM Console

• Loaded Vehicle Specific Stealthbox Subwoofer Enclosure with Single JL Audio 10TW1-2
• 300 Watts RMS Power Handling
• Stealthbox Installs Under Center Console

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NVX Empty BOOST Box - 2008-2018 GMC Sierra Crew Cab - UBE-GM-08SLVCC-P210

For select 2008-2018 vehicles from GMC, Chevrolet - Dual 10" Empty BOOST Vented Truck Enclosure with LED Lighting

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NVX Empty BOOST Box - 2008-2018 GMC Sierra Crew Cab - UBE-GM-08SLVCC-P210

For select 2008-2018 vehicles from GMC, Chevrolet - Dual 10" Empty BOOST Vented Truck Enclosure with LED Lighting

• Custom Fit Empty Dual 10" BOOST Vented Truck Enclosure
• Compatible with select 2008-2018 vehicles from GMC, Chevrolet
• 3/4" Medium Density Fiberboard (MDF) construction
• Illuminated etched plexiglass with RGB LED lighting
• Total box volume: 1.6 cubic feet (common chamber)

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• Custom Fit Empty Dual 10" BOOST Vented Truck Enclosure
• Compatible with select 2008-2018 vehicles from GMC, Chevrolet
• 3/4" Medium Density Fiberboard (MDF) construction
• Illuminated etched plexiglass with RGB LED lighting
• Total box volume: 1.6 cubic feet (common chamber)

Alpine S2-DB8V-TRK

600W Peak (300W RMS) Loaded Dual 8" Vented Enclosure for select 2007-2024 vehicles from Jeep, GMC, Ford

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Alpine S2-DB8V-TRK

600W Peak (300W RMS) Loaded Dual 8" Vented Enclosure for select 2007-2024 vehicles from Jeep, GMC, Ford

• Ported enclosure with 2 8" S Series Subwoofer
• 300 watts RMS (600 watts Peak)
• Final Impedance: 2-ohm
• Dimensions: 40-51" L x 8.75" H x 13.75" W

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Kicker KGMDL7T12 (51KGMDL7T122) + NVX NDA15001 w/ Free Amp Install Kit

1200W RMS Loaded Dual 12" Sealed Truck Enclosure, 1500W RMS Monoblock Amp, 4 Gauge Wiring Kit, and Can Insulator Koozies Bundle

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Kicker KGMDL7T12 (51KGMDL7T122) + NVX NDA15001 w/ Free Amp Install Kit

1200W RMS Loaded Dual 12" Sealed Truck Enclosure, 1500W RMS Monoblock Amp, 4 Gauge Wiring Kit, and Can Insulator Koozies Bundle

  • Kicker 1200W RMS Loaded Dual 12 Inch Sealed Truck Enclosure
  • NDA15001 3000W Peak Class D N-Series Monoblock Amplifier with Bass Remote
  • Full Spec 4 Gauge 100% OFC Copper Complete Amplifier Wiring Kit with RCA
  • Premium Polyurethane Foam Can Insulator Sleeve Koozie with Logo
  • Bundle includes additional Can Insulator Sleeve Koozie
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  • Kicker 1200W RMS Loaded Dual 12 Inch Sealed Truck Enclosure
  • NDA15001 3000W Peak Class D N-Series Monoblock Amplifier with Bass Remote
  • Full Spec 4 Gauge 100% OFC Copper Complete Amplifier Wiring Kit with RCA
  • Premium Polyurethane Foam Can Insulator Sleeve Koozie with Logo
  • Bundle includes additional Can Insulator Sleeve Koozie

NVX BOOST Box - 2014-2018 Chevrolet Silverado, GMC Sierra - LVE-GM-SLVDCG3-D12S

For select 2014-2018 Silverado 2500 HD / 1500 / 3500 HD and Sierra 2500 HD / 1500 / 3500 HD Double Cab - Dual 12" 800W RMS Loaded Up Firing BOOST Sealed Truck Enclosure

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NVX BOOST Box - 2014-2018 Chevrolet Silverado, GMC Sierra - LVE-GM-SLVDCG3-D12S

For select 2014-2018 Silverado 2500 HD / 1500 / 3500 HD and Sierra 2500 HD / 1500 / 3500 HD Double Cab - Dual 12" 800W RMS Loaded Up Firing BOOST Sealed Truck Enclosure

• Custom-Fit BOOST Sealed truck enclosure with 2 12" S Series Subwoofers
• Compatible with select 2014-2018 Silverado 2500 HD / 1500 / 3500 HD and Sierra 2500 HD / 1500 / 3500 HD
• 400 watts RMS (800 watts Peak)
• Final Impedance: 1-ohm

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NVX BOOST Box - 2014-2018 Chevrolet Silverado, GMC Sierra - LVE-GM-SLVCCG3-D10S

For select 2014-2018 Sierra 2500 HD / 3500 HD / 1500 and Silverado 2500 HD / 3500 HD / 1500 Crew Cab - Dual 10" 700W RMS Loaded Down Firing BOOST Sealed Truck Enclosure

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NVX BOOST Box - 2014-2018 Chevrolet Silverado, GMC Sierra - LVE-GM-SLVCCG3-D10S

For select 2014-2018 Sierra 2500 HD / 3500 HD / 1500 and Silverado 2500 HD / 3500 HD / 1500 Crew Cab - Dual 10" 700W RMS Loaded Down Firing BOOST Sealed Truck Enclosure

• Custom-Fit BOOST Sealed truck enclosure with 2 10" S Series Subwoofers
• Compatible with select 2014-2018 Sierra 2500 HD / 3500 HD / 1500 and Silverado 2500 HD / 3500 HD / 1500
• 350 watts RMS (700 watts Peak)
• Final Impedance: 1-ohm

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Stinger TXTRB10

800W Peak (400W RMS) Loaded Single 10" Enclosure for select 2007-2020 vehicles from Ford, Chevrolet, GMC

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Stinger TXTRB10

800W Peak (400W RMS) Loaded Single 10" Enclosure for select 2007-2020 vehicles from Ford, Chevrolet, GMC

• 10” Vented Subwoofer Enclosure for Full-Size Trucks and Other Vehicles
• Preloaded with single 10" P-TX10D4 Subwoofers
• Vented enclosure with Durable Texture UAT (Urethane Acrylic Terpolymer) Enclosure Coating
• Enclosure Dimensions: 12.52" TD x 14.13" BD x 18.11" W x 7.72" H

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NVX BOOST Box - 2014-2018 Chevrolet Silverado, GMC Sierra - LVE-GM-SLVDCG3-D10S

For select 2014-2018 Silverado 3500 HD / 2500 HD / 1500 and Sierra 2500 HD / 1500 / 3500 HD Double Cab - Dual 10" 700W RMS Loaded Up Firing BOOST Sealed Truck Enclosure

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NVX BOOST Box - 2014-2018 Chevrolet Silverado, GMC Sierra - LVE-GM-SLVDCG3-D10S

For select 2014-2018 Silverado 3500 HD / 2500 HD / 1500 and Sierra 2500 HD / 1500 / 3500 HD Double Cab - Dual 10" 700W RMS Loaded Up Firing BOOST Sealed Truck Enclosure

• Custom-Fit BOOST Sealed truck enclosure with 2 10" S Series Subwoofers
• Compatible with select 2014-2018 Silverado 3500 HD / 2500 HD / 1500 and Sierra 2500 HD / 1500 / 3500 HD
• 350 watts RMS (700 watts Peak)
• Final Impedance: 1-ohm

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NVX BOOST Box - 2014-2018 Chevrolet Silverado, GMC Sierra - LVE-GM-SLVCCG3-D12S

For select 2014-2018 Sierra 2500 HD / 1500 / 3500 HD and Silverado 2500 HD / 3500 HD / 1500 Crew Cab - Dual 12" 800W RMS Loaded Down Firing BOOST Sealed Truck Enclosure

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NVX BOOST Box - 2014-2018 Chevrolet Silverado, GMC Sierra - LVE-GM-SLVCCG3-D12S

For select 2014-2018 Sierra 2500 HD / 1500 / 3500 HD and Silverado 2500 HD / 3500 HD / 1500 Crew Cab - Dual 12" 800W RMS Loaded Down Firing BOOST Sealed Truck Enclosure

• Custom-Fit BOOST Sealed truck enclosure with 2 12" S Series Subwoofers
• Compatible with select 2014-2018 Sierra 2500 HD / 1500 / 3500 HD and Silverado 2500 HD / 3500 HD / 1500
• 400 watts RMS (800 watts Peak)
• Final Impedance: 1-ohm

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NVX Loaded BOOST Box - 2008-2018 GMC Sierra Crew Cab - BE-GM-08SLVCC-S212

For select 2008-2018 vehicles from GMC, Chevrolet - Dual 12" 1200W RMS Loaded BOOST Sealed Truck Enclosure with LED Lighting

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NVX Loaded BOOST Box - 2008-2018 GMC Sierra Crew Cab - BE-GM-08SLVCC-S212

For select 2008-2018 vehicles from GMC, Chevrolet - Dual 12" 1200W RMS Loaded BOOST Sealed Truck Enclosure with LED Lighting

• Custom Fit Loaded Dual 12" BOOST Sealed Truck Enclosure
• Fits select 2008-2018 vehicles from GMC, Chevrolet
• 600 watts RMS each (1200 watts Peak each)
• Illuminated etched plexiglass with RGB LED lighting
• Final Impedance: 1-ohm

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NVX Empty BOOST Box - 2008-2018 Chevy Silverado/GMC Sierra - UBE-GM-08SLVCC-P212

For select 2008-2018 vehicles from GMC, Chevrolet - Dual 12" Empty BOOST Vented Truck Enclosure with LED Lighting

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NVX Empty BOOST Box - 2008-2018 Chevy Silverado/GMC Sierra - UBE-GM-08SLVCC-P212

For select 2008-2018 vehicles from GMC, Chevrolet - Dual 12" Empty BOOST Vented Truck Enclosure with LED Lighting

• Custom Fit Empty Dual 12" BOOST Vented Truck Enclosure
• Compatible with select 2008-2018 vehicles from GMC, Chevrolet
• 3/4" Medium Density Fiberboard (MDF) construction
• Illuminated etched plexiglass with RGB LED lighting
• Total box volume: 1.6 cubic feet (common chamber)

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• Custom Fit Empty Dual 12" BOOST Vented Truck Enclosure
• Compatible with select 2008-2018 vehicles from GMC, Chevrolet
• 3/4" Medium Density Fiberboard (MDF) construction
• Illuminated etched plexiglass with RGB LED lighting
• Total box volume: 1.6 cubic feet (common chamber)

Lowest price in 30 days

NVX PBK-GM-08SLVCC-P210 - 2008-2018 GMC Sierra Crew Cab - Complete Bass Package

For select 2008-2018 vehicles from GMC, Chevrolet - Dual 10" 1200W RMS Complete Amplified Subwoofer Bass Package Solution

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NVX PBK-GM-08SLVCC-P210 - 2008-2018 GMC Sierra Crew Cab - Complete Bass Package

For select 2008-2018 vehicles from GMC, Chevrolet - Dual 10" 1200W RMS Complete Amplified Subwoofer Bass Package Solution

  • NVX Loaded BOOST Box for 2008-2018 GMC Sierra Crew Cab
  • Dual 10" 1200W RMS Loaded Vented Truck Enclosure
  • Integrated LED Lighting for Enhanced Visual Appeal
  • Includes SQW104 SQ-Series Dual 4-ohm Subwoofers
  • 1200W Peak (600W RMS) Shallow-Mount Performance
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  • NVX Loaded BOOST Box for 2008-2018 GMC Sierra Crew Cab
  • Dual 10" 1200W RMS Loaded Vented Truck Enclosure
  • Integrated LED Lighting for Enhanced Visual Appeal
  • Includes SQW104 SQ-Series Dual 4-ohm Subwoofers
  • 1200W Peak (600W RMS) Shallow-Mount Performance
Lowest price in 30 days

NVX PBK-GM-08SLVCC-S212 - 2008-2018 GMC Sierra Crew Cab - Complete Bass Package

For select 2008-2018 vehicles from GMC, Chevrolet - Dual 12" 1200W RMS Complete Amplified Subwoofer Bass Package Solution

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NVX PBK-GM-08SLVCC-S212 - 2008-2018 GMC Sierra Crew Cab - Complete Bass Package

For select 2008-2018 vehicles from GMC, Chevrolet - Dual 12" 1200W RMS Complete Amplified Subwoofer Bass Package Solution

  • NVX Loaded BOOST Box for 2008-2018 GMC Sierra Crew Cab
  • Dual 12" 1200W RMS Sealed Truck Enclosure with LED Lighting
  • Two SQW124 12" SQ-Series Dual 4-ohm Shallow-Mount Subwoofers
  • Total System Power Handling of 1200W RMS and 2400W Peak
  • Custom-Fit under-seat design for seamless vehicle integration
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  • NVX Loaded BOOST Box for 2008-2018 GMC Sierra Crew Cab
  • Dual 12" 1200W RMS Sealed Truck Enclosure with LED Lighting
  • Two SQW124 12" SQ-Series Dual 4-ohm Shallow-Mount Subwoofers
  • Total System Power Handling of 1200W RMS and 2400W Peak
  • Custom-Fit under-seat design for seamless vehicle integration

Atrend A184-10V

Empty Dual 10" Vented Underseat Up-Fire Enclosure for select 2014-2018 Silverado 2500 HD / 3500 HD / 1500 and Sierra 3500 HD / 1500 / 2500 HD

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Atrend A184-10V

Empty Dual 10" Vented Underseat Up-Fire Enclosure for select 2014-2018 Silverado 2500 HD / 3500 HD / 1500 and Sierra 3500 HD / 1500 / 2500 HD

• 10" Dual Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Total box volume: 2 cubic feet
• Compatible with select 2014-2018 Silverado 2500 HD / 3500 HD / 1500 and Sierra 3500 HD / 1500 / 2500 HD

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List price $349.99
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JL Audio Stealthbox® SB-GM-SLVD/10TW1/BK

Custom-Fit Loaded Dual 10" Sealed Truck Enclosure with Two 10TW1-4 Subwoofers for select 2014-2018 Silverado 3500 HD / 1500 / 2500 HD and Sierra 2500 HD / 1500 / 3500 HD (Black)

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JL Audio Stealthbox® SB-GM-SLVD/10TW1/BK

Custom-Fit Loaded Dual 10" Sealed Truck Enclosure with Two 10TW1-4 Subwoofers for select 2014-2018 Silverado 3500 HD / 1500 / 2500 HD and Sierra 2500 HD / 1500 / 3500 HD (Black)

• Sealed truck enclosure with 2 10" TW1 Series Subwoofer
• Designed for select 2014-2018 Silverado 3500 HD / 1500 / 2500 HD and Sierra 2500 HD / 1500 / 3500 HD
• 600 watts per pair / 300 watts each RMS
• Final Impedance: 2-ohm
• Includes two JL Audio 10TW1-4 subwoofers
• Easily installs under the rear seat
• Includes two black steel mesh grilles

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    FAQ for Custom-fit Subwoofer Boxes & Enclosures in 2018 Sierra 1500

    Q: Can I upgrade or change the Custom-fit Subwoofer Boxes & Enclosures in 2018 GMC Sierra 1500?

    A: Yes this page includes all the best Custom-fit Subwoofer Boxes & Enclosures that work in your Sierra 1500.

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    Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

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