2019-2024 Chevrolet / GMC Silverado 1500 / Sierra 1500 Subwoofer Box Fitment

2019-2024 Chevrolet / GMC Silverado 1500 / Sierra 1500 T1XX — subwoofer box fitment

What we researched for this specific generation: where an enclosure actually fits, what the factory speakers are, how the factory audio is wired, and which real builds and commercial products exist for it. Confidence badges say how well each figure is sourced — this is research, not manufacturer spec.

Body styles covered: Regular Cab, Double Cab, Crew Cab

Where a box actually fits

These are researched envelopes, not a guarantee. Measure your own vehicle — the numbers here tell you what to expect, not what you have.

Crew Cab Likely

Location	underseat storage compartment, crew cab (shared with 2500/3500 HD Crew Cab 2020-2024)
Outer bounding box	~53"L x 10"W x 10"H (front) / 8"H (rear) — from a factory-style storage product; cross-checked against the AudioControl loaded enclosure's own 52"W x 14.25"D x 10.25"H footprint, broadly consistent. A second published footprint agrees on width: Kicker 51KGMDL7T122 is 52"W x 7-7/16"H x 15-1/2"D and installs under the Crew Cab back seat (Kicker lists 1500 LD Crew Cab 2008-2026). Its 15-1/2" depth is a little more than the AudioControl box's 14.25"D. Vehicle-specific enclosure catalogues; published box footprints are lower bounds on the cavity, not the cavity: NET Audio '2019-up Chevy Silverado Crew Cab Sub Box Sealed': 52 x 16 x 13 in (as printed; axes not labelled), 2.21 ft3, under rear seat; SRQ Customs 'Chevrolet Silverado 2014-up Crew Cab Subwoofer Enclosure': 32 x 16 x 12 in (as printed; axes not labelled), 0.7 ft3, under the back seat on the driver side; SRQ Customs 'Chevy Silverado 2019-up Crew Cab Enclosure 4-10's': 54 x 18 x 18 in (as printed; axes not labelled), 3.25 ft3, under back seat (needs a 2.5 in seat lift, not included). Vehicle-specific enclosure catalogues; published box footprints are lower bounds on the cavity, not the cavity: Ground Shaker 'BLACK 8" QUAD PORTED SUB BOX, FITS 19-26 CHEVY SILVERADO DOUBLE & CREW-CAB': Front Height 9 3/4", Rear Height 6 1/2", Length 53", Depth 17", Front Baffle Thickness 1 1/4" (labelled by Ground Shaker), 2.50 FT3 (1 chamber), FITS UNDER REAR SEAT; Ground Shaker 'BLACK 8" SINGLE SEALED SUB BOX, FITS 19-26 CHEVY SILVERADO DOUBLE & CREW-CAB': Front Height 9 1/2", Rear Height 6 1/2", Length 25 1/2", Top Depth 17", Bottom Depth 15" (labelled by Ground Shaker), 0.90 FT^3, FITS UNDER REAR SEAT.
Known obstructions	None specifically documented beyond the front-to-rear height taper already captured
Usable volume estimate	3 ft³

Starting points

Suggested configurations for this vehicle, not prescriptions. Run the numbers in the Box Builder before you buy anything.

Budget

Subwoofers	1x10" or 1x12" sealed
Box type	sealed
Location	under rear seat, respect 5"/7" downfire depth limit

Enthusiast

Subwoofers	2x10" ported (real example: AudioControl TXGM19D10, 600-1400W RMS) or 4x8" ported (Skar quad)
Box type	ported
Location	under rear seat

Door speaker fitment

Sizes and depths below are what research turned up for this generation. Confirm against your own vehicle before cutting or ordering — trim levels vary.

Front doors Solid

Factory speaker size	6x9" — confirmed, a genuine change from the older GM-truck family's oval-plus-adapter convention (see the 2014-2018 K2XX page).
Adapter bracket needed	unconfirmed
Tweeter	IMPORTANT ARCHITECTURE FINDING: on non-Bose trims, this generation is confirmed to NOT have a dedicated tweeter at all — the dash-corner unit (2.5"/2.75") is a MIDRANGE speaker, not a true tweeter, per forum sourcing. This is a genuine change from the sister GMT900/K2XX pages' confirmed dash-corner TWEETER — do not assume continuity across this generation boundary. Bose-equipped trims may differ, not independently confirmed.
Midrange	Dash corner

Rear doors Solid

Factory speaker size	6.5" (Crew Cab) — Metra's full audio packages for the 2019-2021 and 2022-2024 1500 Crew Cab (Bose-equipped) use "VIBE 6.5" Rear Door Speakers", matching the 6x9 front and 2.7" dash sizes on file; a replacement-kit size, not a GM spec. Double Cab rear doors are not covered by that source.
Adapter bracket needed	unconfirmed

Factory audio integration

Factory amp / premium audio	Bose available on upper trims (carried over from prior generation) — exact trim cutoffs for this generation not yet confirmed
Adding subs without a head-unit swap	Confirmed straightforward — multiple loaded, plug-and-play underseat enclosures exist specifically for this exact fitment
Head unit	No replacement needed

Known integration products

PAC APSUB-GM61 was CHECKED AND DOES NOT FIT this generation. PAC's only 2019 Silverado row reads "Classic model, With BOSE" as compatible and explicitly lists "New model" as NOT compatible. 2019 is the year GM sold the outgoing Classic body alongside the new T1 body, and this page is the NEW body — so the Classic-model row belongs to the 2014-2018 generation, not here. A different interface is needed for the T1 trucks.
LPHGM72 ($149) — PAC Audio LocPro vehicle-specific T-harness line-output converter, per PAC's own published Application Guide (pac-audio.com, harvested 2026-08-04). THIS IS THE PART THE APSUB NOTE ABOVE SAID WAS NEEDED. PAC's rows "2019 SILVERADO | New model, Without BOSE" and "2020-2026 SILVERADO" plus "2019-2024 GMC SIERRA" cover this T1 generation, for trucks WITHOUT Bose. So the split on this truck is: no interface in the AmpPRO subwoofer line for the Bose cars, but LPHGM72 handles the non-Bose ones. PAC gates this part on the GM RADIO OPTION CODE, not just the trim: IOK, IOS and IOT are compatible, IOR is NOT. Check the RPO sticker (usually in the glovebox or on the spare-tire cover) before ordering — this is a separate question from whether the truck has Bose.

Mounting locations

Crew Cab Solid

under rear seat

Multiple named, spec'd products confirm this fitment. Real mounting-depth constraint found and worth encoding as a general design rule for this platform: downfire without a seat lift = 5" max depth; downfire with a 2" seat lift = 7" max depth; upfire adds 0.55" to either. Compatible across Silverado/Sierra 1500 Crew Cab (2019-2024) AND 2500/3500 Crew Cab (2020-2024) per multiple commercial listings — same underseat geometry across the light and heavy-duty crew cab.

Builds and products found for this vehicle

Outside links. Some are commercial products, some are owner builds posted on forums — the label says which. We do not endorse any of them.

AudioControl / Stinger (2 x 10", ported) off-the-shelf
Dual 10" ported loaded enclosure — full commercial spec: 88dB sensitivity, 20-200Hz response, 600W RMS min (1000W ideal/1400W peak), tuned 34Hz w/ 26Hz subsonic filter, 58 lbs, 10.25"H x 52"W x 14.25"D
DS18 (2 x 10", loaded enclosure (type per product line, likely sealed or ported)) off-the-shelf
Dual ZR10.4D subwoofers, 700W RMS each, dual 2.5" voice coils, 4+4 ohm
Skar Audio (4 x 8", ported) off-the-shelf
Quad 8" ported enclosure, vehicle-specific fit under rear cab seat, 2019-2025 range
Kicker (2 x 12", loaded, down-firing (sealed/ported not stated by Kicker)) off-the-shelf
Chevy/GMC-specific dual 12" L7T 2-ohm loaded down-firing enclosure, installs under the back seat. Kicker publishes 52"W x 7-7/16"H x 15-1/2"D and lists Silverado/Sierra 1500 LD Crew Cab 2008-2026 (HD Crew Cab 2008-2027). Kicker publishes these as the box outside dimensions (W/H/D as printed; it does not say which axis D is) and the box is formed to the cab contours, so W x H x D bounds a contoured shape, not a rectangular block — a lower bound on the cavity, not the cavity.
NET Audio (sealed) off-the-shelf
2019-up Chevy Silverado Crew Cab Sub Box Sealed. NET Audio states fit years 2019-up (Crew Cab). Published outside dimensions: 52 x 16 x 13 in (as printed; NET Audio does not label the axes). Published volume: 2.21 ft3. Mounting depth 6 (10s) / 5.25 (12s) in. Type: sealed (NET Audio also lists a ported version, same outside dimensions). Location: under rear seat. NET Audio also lists the same box for the GMC Sierra Crew Cab (same dimensions).
SRQ Customs (other (sealed/ported not stated by the maker)) off-the-shelf
Chevrolet Silverado 2014-up Crew Cab Subwoofer Enclosure. SRQ Customs states fit years 2014-up (Crew Cab). Published outside dimensions: 32 x 16 x 12 in (as printed; SRQ Customs does not label the axes). Published volume: 0.7 ft3. Type: sealed/ported not stated. Location: under the back seat on the driver side.

Show 31 more

SRQ Customs (4 x 10", other (sealed/ported not stated by the maker)) off-the-shelf
Chevy Silverado 2019-up Crew Cab Enclosure 4-10's. SRQ Customs states fit years 2019-up (Crew Cab). Published outside dimensions: 54 x 18 x 18 in (as printed; SRQ Customs does not label the axes). Published volume: 3.25 ft3. Type: upward firing. Location: under back seat (needs a 2.5 in seat lift, not included).
NET Audio (sealed) off-the-shelf
2019-up Chevy Silverado Double Cab Sub Box Sealed. NET Audio states fit years 2019-up (Double Cab). Published outside dimensions: 52 x 14 x 13 in (as printed; NET Audio does not label the axes). Published volume: 2.21 ft3. Mounting depth 6 (10s) / 5.25 (12s) in. Type: sealed. Location: under rear seat.
SRQ Customs (2 x 10", other (sealed/ported not stated by the maker)) off-the-shelf
Chevy Silverado / GMC Sierra 2020 Level 1 Crew Cab Subwoofer Enclosure. SRQ Customs states fit years 2020-2026 (Crew Cab). Of the 2019-2024 model years here, it covers 2020-2024 only. Published outside dimensions: 54 x 16 x 16 in (as printed; SRQ Customs does not label the axes). Published volume: 1.4 ft3. Mounting depth up to 5-1/2 in. Type: sealed/ported not stated. Location: under back seat; 2.25 in clearance between the floor and woofer.
Skar Audio (2 x 8", ported) off-the-shelf
Dual 8" 2,400W Loaded Subwoofer Enclosure Compatible with 2019-2026 Chevrolet Silverado 1500/GMC Sierra 1500 Double Cab Trucks (L-EVL-VS-2X8GM-2019-UP-DCAB-V). Skar Audio states fit years 2019-2026 (Double Cab). Outside dimensions: not recorded here — check Skar's product page. Type: ported. Location: under the rear seat of the double cab. Skar: does not fit 2014-2018 trucks (different cab interior).
Audio Design SCG (sealed) off-the-shelf
2019 and up Chevrolet Silverado and GMC Sierra 1500 Subwoofer Enclosure. Audio Design SCG states fit years 2019 and up for Chevrolet Silverado and GMC Sierra 1500 (new body style). Published outside dimensions: 51 x 15 x 15 in (as printed; Audio Design SCG does not label the axes). Mounting depth 6" maximum woofer depth. Type: Sealed. Subwoofers: Single or dual 10"/12"; optional 4 x 10" (needs seat lift that raises rear seat 2.5"). Maker notes: Does NOT fit 2019 Classic body.
Ground Shaker (2 x 8", ported) off-the-shelf
BLACK 8" DUAL PORTED SUB BOX, FITS 07-26 CHEVY SILVERADO REGULAR-CAB (SKU GS-CSTCCXLP28B). Ground Shaker states fit years 07-26 for Chevy Silverado Regular-Cab. Published outside dimensions: Height 15", Length 49", Top Depth 6", Bottom Depth 10 1/2" (labelled by Ground Shaker). Published volume: 1.70 FT3. Mounting depth 10 1/2". Type: ported. Location: Fits Behind Seat; Forward Firing. The same outside dimensions, volume and mounting depth are printed for these related listings: 8" dual [GS-GSTCCXLP28B].
Ground Shaker (ported) off-the-shelf
BLACK 8" DUAL PORTED SUB BOX, FITS 19-26 CHEVY SILVERADO DOUBLE & CREW-CAB (SKU GS-LCHVP28B). Ground Shaker states fit years 19-26 for Chevy Silverado Double & Crew-Cab. Published outside dimensions: Height 9 1/2", Length 49 1/2", Depth 17" (labelled by Ground Shaker). Published volume: 1.76 FT^3. Mounting depth 6 1/2". Type: ported. Location: FITS UNDER REAR SEAT; DOWN FIRING. The same outside dimensions, volume and mounting depth are printed for these related listings: 10" dual [GS-LCHVP210B]; 12" dual [GS-LCHVP212B]; 10" dual [GS-LGMP210B]; 12" dual [GS-LGMP212B]; 8" dual [GS-LGMP28B].
Ground Shaker (sealed) off-the-shelf
BLACK 8" DUAL SEALED SUB BOX, FITS 07-26 CHEVY SILVERADO REGULAR-CAB (SKU GS-STCC28B). Ground Shaker states fit years 07-26 for Chevy Silverado Regular-Cab. Published outside dimensions: Height 13 3/4", Length 53 1/4", Top Depth 5", Bottom Depth 9" (labelled by Ground Shaker). Published volume: 1.50 FT^3 total; 0.75 FT^3 per subwoofer. Mounting depth 6 3/4". Type: sealed. Location: FITS BEHIND SEAT; FORWARD FIRING. Maker notes: NO NEED TO REMOVE CENTER CONSOLE DURING INSTALLATION; SUBWOOFERS WITH WIDE BASKETS/MAGNETS MAY NOT FIT. The same outside dimensions, volume and mounting depth are printed for these related listings: 10" dual [GS-STCCKK210B]; 8" dual [GS-GSTCC28B]; 10" dual [GS-GSTCC210B]; 12" dual [GS-GSTCC212B]; 8" dual [GS-GSTCCKK28B]; 10" dual [GS-GSTCCKK210B]; 12" dual [GS-GSTCCKK212B]; 10" dual [GS-STCC210B]; 12" dual [GS-STCC212B]; 8" dual [GS-STCCKK28B]; 12" dual [GS-STCCKK212B].
Ground Shaker (sealed) off-the-shelf
BLACK 8" DUAL SEALED SUB BOX, FITS 19-26 CHEVY SILVERADO DOUBLE & CREW-CAB (SKU GS-LCHV28B). Ground Shaker states fit years 19-26 for Chevy Silverado Double & Crew-Cab. Published outside dimensions: Height 9 1/2", Length 49 1/2", Depth 17" (labelled by Ground Shaker). Published volume: 1.85 FT^3 total; 0.92 FT^3 per subwoofer. Mounting depth 6 1/2". Type: sealed. Location: FITS UNDER REAR SEAT; DOWN FIRING. The same outside dimensions, volume and mounting depth are printed for these related listings: 10" dual [GS-LGM210B]; 12" dual [GS-LGM212B]; 12" dual [GS-LGML7T212B] (L7T variant); 10" dual [LCHV210B]; 12" dual [LCHV212B]; 8" dual [GS-LCHVKK28B] (SoloBaric variant); 8" dual [GS-LGM28B]; 10" dual [GS-LGML7T210B] (L7T variant); 8" dual [GS-LGMKK28B] (SoloBaric variant).
Ground Shaker (ported) off-the-shelf
BLACK 8" QUAD PORTED SUB BOX, FITS 19-26 CHEVY SILVERADO DOUBLE & CREW-CAB (SKU GS-FLCHVP48B). Ground Shaker states fit years 19-26 for Chevy Silverado Double & Crew-Cab. Published outside dimensions: Front Height 9 3/4", Rear Height 6 1/2", Length 53", Depth 17", Front Baffle Thickness 1 1/4" (labelled by Ground Shaker). Published volume: 2.50 FT3 (1 chamber). Mounting depth 7 1/4" (with a 6" magnet diameter). Type: ported. Location: FITS UNDER REAR SEAT; FORWARD FIRING. The same outside dimensions, volume and mounting depth are printed for these related listings: 8" dual [GS-FLCHVP28B].
Ground Shaker (ported) off-the-shelf
BLACK 8" QUAD PORTED SUB BOX, FITS 19-26 GMC SIERRA DOUBLE & CREW-CAB (SKU GS-FLGMP48B). Ground Shaker states fit years 19-26 for GMC Sierra Double & Crew-Cab. Published outside dimensions: Front Height 9 3/4", Rear Height 6 1/2", Length 53", Depth 17" (labelled by Ground Shaker). Published volume: 2.50 FT3. Mounting depth 7 1/4" (with a 6" magnet diameter). Type: ported. Location: Fits under rear seat; Forward firing. The same outside dimensions, volume and mounting depth are printed for these related listings: 8" dual [GS-FLGMP28B].
Ground Shaker (sealed) off-the-shelf
BLACK 8" SINGLE SEALED SUB BOX, FITS 19-26 CHEVY SILVERADO DOUBLE & CREW-CAB (SKU GS-LCHV18B). Ground Shaker states fit years 19-26 for Chevy Silverado Double & Crew-Cab. Published outside dimensions: Front Height 9 1/2", Rear Height 6 1/2", Length 25 1/2", Top Depth 17", Bottom Depth 15" (labelled by Ground Shaker). Published volume: 0.90 FT^3. Mounting depth 6 1/2". Type: sealed. Location: FITS UNDER REAR SEAT; DOWN FIRING. The same outside dimensions, volume and mounting depth are printed for these related listings: 12" single [GS-LCHV112B]; 10" single [GS-LGM110B]; 12" single [GS-LGM112B]; 8" single [GS-LGMKK18B] (SoloBaric variant); 10" single [GS-LCHV110B]; 8" single [GS-LCHVKK18B] (SoloBaric variant); 10" single [GS-LGML7T110B] (L7T variant); 12" single [GS-LGML7T112B] (L7T variant); 8" single [GS-LGM18B].
Ground Shaker (sealed) off-the-shelf
BLACK 10" L7T DUAL SEALED SUB BOX, FITS 19-26 CHEVY SILVERADO DOUBLE & CREW-CAB (SKU GS-LCHVL7T210B). Ground Shaker states fit years 19-26 for Chevy Silverado Double & Crew-Cab. Published outside dimensions: Height 9 1/2", Length 49 1/2", Depth 17" (labelled by Ground Shaker). Published volume: 1.85 FT³ total; 0.92 FT³ per subwoofer. Type: sealed. Location: FITS UNDER REAR SEAT; DOWN FIRING. Maker notes: FOR L7T SUBWOOFERS ONLY. The same outside dimensions, volume and mounting depth are printed for these related listings: 12" dual [GS-LCHVL7T212B] (L7T variant).
Ground Shaker (sealed) off-the-shelf
BLACK 10" L7T SINGLE SEALED SUB BOX, FITS 19-26 CHEVY SILVERADO DOUBLE & CREW-CAB (SKU GS-LCHVL7T110B). Ground Shaker states fit years 19-26 for Chevy Silverado Double & Crew-Cab. Published outside dimensions: Front Height 9 1/2", Rear Height 6 1/2", Length 25 1/2", Top Depth 17", Bottom Depth 15" (labelled by Ground Shaker). Published volume: 0.90 FT3. Type: sealed. Location: FITS UNDER REAR SEAT DRIVER SIDE; down-firing. Maker notes: Designed exclusively for L7T subwoofers. The same outside dimensions, volume and mounting depth are printed for these related listings: 12" single [GS-LCHVL7T112B] (L7T variant).
Ground Shaker (sealed) off-the-shelf
BLACK 10" TW3 SINGLE SEALED SUB BOX, FITS 19-26 CHEVY SILVERADO DOUBLE & CREW-CAB (SKU GS-LCHVTW3110B). Ground Shaker states fit years 19-26 for Chevy Silverado Double & Crew-Cab. Published outside dimensions: Front Height 9 1/2", Rear Height 6 1/2", Length 25 1/2", Top Depth 17", Bottom Depth 15" (labelled by Ground Shaker). Published volume: 0.90 FT³. Mounting depth 4 1/2". Type: sealed. Location: FITS UNDER REAR SEAT; DOWN FIRING. The same outside dimensions, volume and mounting depth are printed for these related listings: 12" single [GS-LCHVTW3112B] (TW3 variant); 12" single [GS-LGMTW3112B] (TW3 variant); 10" single [GS-LGMTW3110B] (TW3 variant).
Ground Shaker (sealed) off-the-shelf
BLACK 13" DUAL SEALED TW5 SUB BOX, FITS 07-26 CHEVY SILVERADO REGULAR-CAB (SKU GS-STCCTW5213B). Ground Shaker states fit years 07-26 for Chevy Silverado Regular-Cab. Published outside dimensions: Height 13 3/4", Length 53 1/4", Top Depth 5", Bottom Depth 9" (labelled by Ground Shaker). Published volume: 1.42 FT^3 total; 0.71 FT^3 per subwoofer. Mounting depth 6 3/4". Type: sealed. Location: FITS BEHIND SEAT; FORWARD FIRING. Maker notes: no center console removal needed; FOR TW5 SUBWOOFERS ONLY. The same outside dimensions, volume and mounting depth are printed for these related listings: 10" dual [GS-STCCTW3210B] (TW3 variant); 12" dual [GS-STCCTW3212B] (TW3 variant); 12" dual [GS-GSTCCTW3212B] (TW3 variant); 13" dual [GS-GSTCCTW5213B]; 10" dual [GS-GSTCCTW3210B] (TW3 variant).
Ground Shaker (sealed) off-the-shelf
BLACK 13" TW5 DUAL SEALED SUB BOX, FITS 19-26 CHEVY SILVERADO DOUBLE & CREW-CAB (SKU GS-LCHVTW5213B). Ground Shaker states fit years 19-26 for Chevy Silverado Double & Crew-Cab. Published outside dimensions: Height 9 1/2", Length 49 1/2", Top Depth 17", Bottom Depth 15" (labelled by Ground Shaker). Published volume: 1.60 FT^3 total; 0.80 FT^3 per subwoofer. Mounting depth 4 1/2". Type: sealed. Location: FITS UNDER REAR SEAT; DOWN FIRING. The same outside dimensions, volume and mounting depth are printed for these related listings: 10" dual [GS-LCHVTW3210B] (TW3 variant); 12" dual [GS-LCHVTW3212B] (TW3 variant).
Ground Shaker (sealed) off-the-shelf
BLACK 13" TW5 DUAL SEALED SUB BOX, FITS 19-26 GMC SIERRA DOUBLE & CREW-CAB (SKU GS-LGMTW5213B). Ground Shaker states fit years 19-26 for GMC Sierra Double & Crew-Cab. Published outside dimensions: Height 9 1/2", Length 49 1/2", Top Depth 17", Bottom Depth 15" (labelled by Ground Shaker). Published volume: 1.60 FT^3 total; 0.80 FT^3 per subwoofer. Type: sealed. Location: FITS UNDER REAR SEAT; down-firing. Maker notes: WILL ONLY FIT 13" JL AUDIO TW5 SUBWOOFERS. The same outside dimensions, volume and mounting depth are printed for these related listings: 10" dual [GS-LGMTW3210B] (TW3 variant); 12" dual [GS-LGMTW3212B] (TW3 variant).
Ground Shaker (1 x 13", sealed) off-the-shelf
BLACK 13" TW5 SINGLE SEALED SUB BOX, FITS 19-26 CHEVY SILVERADO DOUBLE & CREW-CAB (SKU GS-LCHVTW5113B). Ground Shaker states fit years 19-26 for Chevy Silverado Double & Crew-Cab. Published outside dimensions: Front Height 9 1/2", Rear Height 6 1/2", Length 25 1/2", Top Depth 17", Bottom Depth 15" (labelled by Ground Shaker). Published volume: 0.90 FT^3. Mounting depth 4". Type: sealed. Location: FITS UNDER REAR SEAT; DOWN FIRING. The same outside dimensions, volume and mounting depth are printed for these related listings: 13" single [GS-LGMTW5113B] (TW5 variant).
Ground Shaker (4 x 8", sealed) off-the-shelf
BLACK QUAD 8" SEALED SUB BOX, FITS 19-26 CHEVY SILVERADO DOUBLE & CREW-CAB (SKU GS-FLCHV48B). Ground Shaker states fit years 19-26 for Chevy Silverado Double & Crew-Cab. Published outside dimensions: Front Height 9 3/4", Rear Height 6 1/2", Length 53", Depth 17", Front Baffle Thickness 1 1/4" (labelled by Ground Shaker). Published volume: 2.90 FT^3 total; 0.72 FT^3 per subwoofer. Mounting depth 7 1/4" (With A 6" Magnet Diameter). Type: sealed. Location: FITS UNDER REAR SEAT; FORWARD FIRING.
Ground Shaker (4 x 8", sealed) off-the-shelf
BLACK QUAD 8" SEALED SUB BOX, FITS 19-26 GMC SIERRA DOUBLE & CREW-CAB (SKU GS-FLGM48B). Ground Shaker states fit years 19-26 for GMC Sierra Double & Crew-Cab. Published outside dimensions: Front Height 9 3/4", Rear Height 6 1/2", Length 53", Depth 17" (labelled by Ground Shaker). Published volume: 2.90 FT^3 total; 0.72 FT^3 per subwoofer. Mounting depth 7 1/4" (With a 6" Magnet Diameter). Type: sealed. Location: Fits Under Rear Seat; Forward Firing. Maker notes: NEED A CUSTOM CUTOUT (GIVE US A CALL).
Sound Off Audio (4 x 8", ported) off-the-shelf
2019 - 2026 Silverado Crew Cab Quad 8" ported subwoofer box (SKU gmcrew-19-8.4v). Sound Off Audio states fit years 2019-2026 for Silverado Crew Cab (Half Ton only). No outside dimensions on the product page. Published volume: 2.75 cubic ft. Mounting depth Endless (as printed). Type: Ported. Subwoofers: 4x 8". Location: Under seat.
Sound Off Audio (2 x 10", ported) off-the-shelf
2019-26 SILVERADO / SIERRA CREW CAB DUAL 10 PORTED SUBWOOFER BOX (SKU GMCREW19-10.2DF). Sound Off Audio states fit years 2019-26 for Silverado / Sierra Crew Cab. No outside dimensions on the product page. Published volume: 2.6 cubic ft (total). Mounting depth 6.5" for 10"; 6" for 12". Type: Ported. Subwoofers: Dual 10" ported.
Sound Off Audio (other (sealed/ported not stated by the maker)) off-the-shelf
2019-26 SILVERADO CREW CAB DUAL SUBWOOFER BOX (SKU GMCREW-2019-DUAL). Sound Off Audio states fit years 2019-2026 for Silverado Crew Cab. No outside dimensions on the product page. Published volume: 1.0 CUBIC FT PER SIDE. Mounting depth 10" 6.25 or 12" 5.75. Type: downfire (page says; sealed/ported not stated). Subwoofers: 2 (10" or 12").
Sound Off Audio (other (sealed/ported not stated by the maker)) off-the-shelf
2019-26 SILVERADO DOUBLE CAB DUAL SUBWOOFER BOX (SKU GMDBL-19-DUAL). Sound Off Audio states fit years 2019-26 for Silverado Double Cab. No outside dimensions on the product page. Published volume: 1.0 cubic ft per side (2.0 total). Mounting depth 10" 6.25 or 12" 5.75. Subwoofers: Dual 10" or 12". Location: Under rear seat.
Sound Off Audio (other (sealed/ported not stated by the maker)) off-the-shelf
2019-26 SILVERADO DOUBLE CAB SINGLE SUBWOOFER BOX (SKU GMDBL-2019 SINGLE). Sound Off Audio states fit years 2019-2026 for Chevrolet Silverado Double Cab. No outside dimensions on the product page. Published volume: 1.0 cubic ft (per subwoofer). Mounting depth 10" 6.25; 12" 5.75. Subwoofers: Single (10" or 12"). Location: Driver side.
Sound Off Audio (other (sealed/ported not stated by the maker)) off-the-shelf
2019-2026 SILVERADO CREW CAB SINGLE SUBWOOFER BOX (NEW BODY STYLE) (SKU GMCREW-19-SINGLE). Sound Off Audio states fit years 2019-2026 for Silverado Crew Cab. No outside dimensions on the product page. Published volume: 1.0 cubic ft. Mounting depth 10" 6.5; 12" 5.75. Subwoofers: Single (10", 6.5" or 12"). Location: Driver side.
Sound Off Audio (1 x 10", ported) off-the-shelf
2019-2026 SILVERADO/SIERRA CREW CAB SINGLE 10 PORTED BOX (SKU GMCREW-19-10.1V). Sound Off Audio states fit years 2019-2026 for Chevrolet Silverado/GMC Sierra Crew Cab. No outside dimensions on the product page. Published volume: 1.1 cubic feet. Mounting depth 6 inches. Type: Ported. Subwoofers: Single 10-inch. Location: Under driver side back seat.
Super Crew Sound (other (sealed/ported not stated by the maker)) off-the-shelf
Chevy Silverado / GMC Sierra Double Cab 2014 - 2020 Single Subwoofer Box (SKU 14ChevyDCsingle). Super Crew Sound states fit years 2014-2020 for Chevy Silverado / GMC Sierra Double Cab. Of the 2019-2024 model years here, it covers 2019-2020 only. No outside dimensions on the product page. Published volume: .55 cubic foot. Mounting depth 5.5"; Mounting Depth 12" Sub: 5"; Mounting Depth based on: 6" diameter magnet. Subwoofers: Fits 8, 10 or 12 inch subwoofers. Location: Fits under rear seat; Subs fire down. Hole cutouts 8" 7", 10" 9 1/8", 12" 11". 1 1/2" clearance under the box. 5/8" MDF.
Super Crew Sound (other (sealed/ported not stated by the maker)) off-the-shelf
Chevy Silverado & GMC Sierra Crew Cab 2014-2022 Dual Subwoofer Box (SKU 14ChevyDCdual). Super Crew Sound states fit years 2014-2022 for Chevy Silverado/GMC Sierra Crew Cab. Of the 2019-2024 model years here, it covers 2019-2022 only. No outside dimensions on the product page. Published volume: .625 cubic foot Per Sub (1.25 total Mono Chamber). Mounting depth 5.2" (8" & 10") (Optional 5.7"); 4.7" (12") (Optional 5.25"); 2019+ Version 4.00" (Optional 4.625"). Subwoofers: Fits two 8, 10 or 12 inch subwoofers. Location: Fits under rear seat; Subs fire down. Maker notes: Fits 2014-2022 Chevy Silverado/GMC Crew Cab 1500; Fits 2015-2022 Chevy Silverado/GMC Crew Cab 2500/3500 HD. (Does not fit 2014 2500/3500 HD). Hole cutouts 8" 7", 10" 9 1/8", 12" 11". Box divider included.
Super Crew Sound (other (sealed/ported not stated by the maker)) off-the-shelf
Chevy Silverado Crew Cab 2014-2021 Single Subwoofer box (SKU 2014ChevyCCsingle). Super Crew Sound states fit years 2014-2021 for Chevy Silverado/GMC Crew Cab. Of the 2019-2024 model years here, it covers 2019-2021 only. No outside dimensions on the product page. Published volume: .625 cubic foot. Mounting depth 5" (8" & 10") (Optional 5 5/8"); 4 3/8" (12") (Optional 5."). Subwoofers: Fits one 8, 10 or 12 inch subwoofers. Location: Fits under rear seat; Subs fire down. Hole cutouts 8" 7", 10" 9 1/8", 12" 11". 1 1/2" clearance under the box.

Build it for this vehicle

Design a box for this vehicle — Enclosure volume, port tuning, and a see-through render.
Door speaker fitment — No measured door depth on file for this vehicle yet, so there is no fit check to run. The page says how to request one.
See the factory speaker locations — Factory speaker sizes, depths and locations we have researched for this vehicle.

Each link opens the tool with this vehicle already selected.

Before you cut anything

Measure your own vehicle. Trim levels, factory subwoofer options, and mid-generation changes all move these numbers, and a box cut to a researched figure that does not match your truck is wasted wood. Where a badge reads Unconfirmed, treat the value as a starting point for your own measurement, not as an answer.