2023-2025 Chevrolet / GMC Colorado / Canyon Subwoofer Box Fitment

2023-2025 Chevrolet / GMC Colorado / Canyon 3rd Gen — 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: 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 Unconfirmed

Location	underseat, crew cab
Outer bounding box	Published box footprints are lower bounds on the cavity, not the cavity (read 2026-10-08). Ground Shaker (labelled by the maker): Height 7 1/4", Length 42 1/4", Depth 14 1/2" for its dual 10" and dual 8" sealed and single 10" ported boxes, mounting depth 4". SRQ Customs: 50 x 12 x 12 in (single 10", axes not labelled) and 54 x 16 x 16 in (pair of 8" Kicker L7, axes not labelled). SubThump prints no outside dimensions; mounting depth 3-1/2" (with restrictions), cutout 9-1/8" for 10" and 7-1/8" for 8".
Known obstructions	Plastic cover and support bar under the rear seat must be removed (SubThump, Ground Shaker). Power inverter module under the seat, if equipped, must be relocated (Ground Shaker) or covered (SubThump). Shallow-mount subs only; wide baskets or magnets may not fit (Ground Shaker); SubThump takes no returns if the customer's sub does not fit.

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 Unconfirmed

Factory speaker size	no source gives the 2023-and-later door speaker size: Metra's Colorado / Canyon products are listed for 2015-2022, with no 2023 page, and no GM page was reachable
Adapter bracket needed	unconfirmed

Rear doors Unconfirmed

Adapter bracket needed	unconfirmed

Factory audio integration

Factory amp / premium audio	Bose (optional), seven speakers - the audio maker's own Colorado page, undated and silent on trims, amplifier, subwoofer and active noise cancellation: "Available with a premium Bose system, complete with 7 high-performance speakers." (automotive.bose.com/vehicles/chevrolet/colorado, read 2026-10-08.) Not tied to any model year by the page, so it is not a 2023-2025 statement. No GM source for the 2023+ standard system or trim gating was reachable.
Adding subs without a head-unit swap	Bose trucks: SubThump sells a plug-in harness because "Bose systems have digital inputs from the radio to the amp, which cannot be interecepted for adding amplifiers" (quoted as printed); the harness taps after the amp and gives "Left Front Door, Right Front Door, And Sub". It works only with a Bose amp: "If your truck has no amp at all, then we have no harness for non amp applications at present." Non-Bose trucks: not researched.

Factory amp / premium audio

Bose (optional), seven speakers - the audio maker's own Colorado page, undated and silent on trims, amplifier, subwoofer and active noise cancellation: "Available with a premium Bose system, complete with 7 high-performance speakers." (automotive.bose.com/vehicles/chevrolet/colorado, read 2026-10-08.) Not tied to any model year by the page, so it is not a 2023-2025 statement. No GM source for the 2023+ standard system or trim gating was reachable.

Adding subs without a head-unit swap

Bose trucks: SubThump sells a plug-in harness because "Bose systems have digital inputs from the radio to the amp, which cannot be interecepted for adding amplifiers" (quoted as printed); the harness taps after the amp and gives "Left Front Door, Right Front Door, And Sub". It works only with a Bose amp: "If your truck has no amp at all, then we have no harness for non amp applications at present." Non-Bose trucks: not researched.

Known integration products

SubThump 6G-BZT/ANC - "2015-2026 Colorado/Canyon With BOSE Plug N Play T-Harness And ANC Defeat Harness Kit", $89 (per SubThump's page, 2026-10-08): fits "2015-2026 Colorado/Canyon With BOSE Amplifier (Diagonal fins)"; the ANC defeat harness "simply plugs inline at the X3 connector" and deactivates the noise-cancelling microphones.

Mounting locations

Crew Cab Solid

under rear seat, downfire

Ten vehicle-specific listings read, all under the rear seat, all crew cab, all shallow-mount subs only: SubThump 2023-2026 dual 10" downfire (0.45 ft3 per sub sealed, 3-1/2" mounting depth), single 10" with 11" x 15" amp shelf (0.6 ft3 sealed), large single 10" (0.90 ft3 sealed) and single 10" slot-vented (0.85 ft3 net, tuned 33 Hz); SRQ Customs single 10" (0.8 ft3) and a 54 x 16 x 16 in (axes not labelled) pair of 8" Kicker L7; Ground Shaker dual sealed 10" and dual sealed 8" (0.96 ft3 total, 4" mounting depth), single ported 10" (0.86 ft3, 36 Hz). No measured cavity dimensions from a neutral source were found. This is a pickup: the EPA prints no luggage volume for it (every luggage field is 0 on its 2023 record) and no GM cargo figure is on file, so the box makers' listings below are the fit data.

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.

SubThump (sealed) off-the-shelf
*New* 2023-2026 Colorado/Canyon Crew Cab Dual 10 Downfire Sub Box (Part # Col23-210DF). SubThump states fit "2023-2026 Chevy Colorado & GMC Canyon Crew Cab Trucks". No outside dimensions on the page. Published volume: .45 cu.ft per sub. Mounting depth 3-1/2" (with restrictions). Sealed. Fits two 8" or 10" shallow subs (cutout 9-1/8" for 10", 7-1/8" for 8"). Location: under rear seat, speakers fire down, 1-1/2" box-to-floor clearance. Maker notes: "Plastic cover and support bar must be removed for box to fit"; "No modifications to truck are required"; 2023 boxes come with a cover to hide the inverter module. About 26 lbs empty. Price $279.
SubThump (sealed) off-the-shelf
*New* 2023-2026 Colorado/Canyon Crew Cab Single 10 Downfire Sub Box With Amp Space (Part # Col23-110DF-Amp). SubThump states fit "2023-2026 Chevy Colorado & GMC Canyon Crew Cab Trucks". No outside dimensions on the page. Published volume: 0.6 cu. ft. Mounting depth 3-1/2". Sealed. One 8" or 10" shallow sub. Amp shelf 11" x 15". Location: under the rear seat. Maker notes: plastic cover and support bar must be removed; not every shallow sub fits, no returns if the sub does not fit. Price $319.
SubThump (1 x 10", sealed) off-the-shelf
*New* 2023-2026 Colorado/Canyon Crew Cab Large Single 10 Downfire Sub Box (Part # Col23-110DF-NoAmp). SubThump states fit "2023-2026 Chevy Colorado & GMC Canyon Crew Cab Trucks". No outside dimensions on the page. Published volume: .90 cu.ft. Mounting depth 3-1/2". Sealed. "Fits one 10" shallow sub" (cutout 9-1/8"). Location: under rear seat. Maker notes: plastic cover and support bar must be removed. Price $299.
SubThump (1 x 10", ported) off-the-shelf
*New* 2023-2026 Colorado/Canyon Crew Cab Single 10 Slot Vented Sub Box (Part # Col23-110DF-P). SubThump states fit "2023-2026 Chevy Colorado & GMC Canyon Crew Cab Trucks". No outside dimensions on the page. Published volume: .85 cu.ft. net. Port as printed: 3"x4" x 30: Long (the page does not explain the notation). Tuning: 33 Hz. Mounting depth 3-1/2" (with restrictions). Ported. "Fits one 10" shallow sub" (cutout 9-1/8"). Location: under rear seat. Maker notes: plastic cover and support bar must be removed. Price $329.
SRQ Customs (1 x 10", other (sealed/ported not stated by the maker)) off-the-shelf
Chevy Colorado / GMC Canyon Subwoofer Enclosure 10" (SKU COLCANTW3). SRQ Customs states fit "all crew cab models 2015-2025"; not extended or single cabs. Published outside dimensions: 50 x 12 x 12 in (as printed; SRQ Customs does not label the axes). Published volume: 0.8 cubic feet of airspace. Mounting depth not stated; sealed/ported not stated. One 10" sub (built around a JL Audio 10TW3, not included). Location: replaces "the metal bar and plastic tub under the back seat". Built to order, ships in 5 business days. Price $215.
SRQ Customs (2 x 8", other (sealed/ported not stated by the maker)) off-the-shelf
Chevrolet Colorado 2015-25 Crew Cab Subwoofer Enclosure (SKU GMCO28L7T). SRQ Customs states fit 2015-25 crew cab (the URL slug reads 2015-21; the page title is the one used here). Published outside dimensions: 54 x 16 x 16 in (as printed; axes not labelled). Volume, mounting depth and sealed/ported not stated. Two Kicker 8" L7 shallow subwoofers, wired to 1 ohm. Location: "replaces the plastic tray under the back seat". Built to order. Price $625.

Show 4 more

Ground Shaker (2 x 10", sealed) off-the-shelf
BLACK 10" DUAL SEALED SUB BOX, FITS 15-26 CHEVY COLORADO CREW-CAB (SKU GS-CXHV210B). Ground Shaker states fit years 15-26 for Chevy Colorado crew cab (covers all of 2023-2025; the URL slug reads 2015-2019). Published outside dimensions: HEIGHT 7 1/4", LENGTH 42 1/4", DEPTH 14 1/2" (labelled by Ground Shaker). Published volume: 0.96 FT^3 total, 0.48 FT^3 per subwoofer, two individual chambers. Mounting depth 4". Cutout diameter 9 1/4". Sealed. Location: "FITS UNDER REAR SEAT", down firing. Maker notes: "POWER INVERTER "IF EQUIPPED" NEEDS TO BE RELOCATED"; "REMOVAL OF PLASTIC COVER & SUPPORT BAR IS REQUIRED"; "SHALLOW MOUNTS ONLY". Ground Shaker also lists the same footprint, volume and mounting depth for the GMC Canyon as GS-CXGM210B (15-24, also listed here); the two titles state different years, so both entries are kept.
Ground Shaker (1 x 10", ported) off-the-shelf
BLACK 10" SINGLE PORTED SUB BOX, FITS 15-26 CHEVY COLORADO CREW-CAB (SKU GS-CXHVP110B). Ground Shaker states fit years 15-26 for Chevy Colorado crew cab (covers all of 2023-2025; the URL slug reads 2015-2017). Published outside dimensions: HEIGHT 7 1/4", LENGTH 42 1/4", DEPTH 14 1/2" (labelled by Ground Shaker). Published volume: 0.86 FT^3. Tuning 36 Hz; "1 SLOT PORT (DIMENSIONS: H-1 1/2" W-5" L-15 1/2")". Mounting depth 4". Cutout diameter 9 1/4". Ported. One 10" sub. Location: "FITS UNDER REAR SEAT", firing down. Maker notes: shallow mounts only; wide baskets or magnets may not fit; inverter must be relocated; plastic cover and support bar must come out. Price $340.
Ground Shaker (2 x 10", sealed) off-the-shelf
BLACK 10" DUAL SEALED SUB BOX, FITS 15-24 GMC CANYON CREW-CAB (SKU GS-CXGM210B). Ground Shaker states fit years 15-24 for GMC Canyon crew cab (covers 2023-2024 of the 2023-2025 model years here; not 2025). Published outside dimensions: HEIGHT 7 1/4", LENGTH 42 1/4", DEPTH 14 1/2" (labelled by Ground Shaker). Published volume: 0.96 FT^3 total, 0.48 FT^3 per subwoofer. Mounting depth 4". Cutout diameter 9 1/4". Sealed. Location: under rear seat, down firing. Same maker notes as the Chevrolet listing. Ground Shaker's Chevrolet-titled listing of the same footprint, volume and mounting depth (GS-CXHV210B, also listed here) states 15-26; the two titles state different years, so both entries are kept.
Ground Shaker (2 x 8", sealed) off-the-shelf
BLACK 8" DUAL SEALED SUB BOX, FITS 15-24 GMC CANYON CREW-CAB (SKU GS-CXGM28B). Ground Shaker states fit years 15-24 for GMC Canyon crew cab (covers 2023-2024 of the 2023-2025 model years here; not 2025). Published outside dimensions: Height 7 1/4", Length 42 1/4", Depth 14 1/2" (labelled by Ground Shaker). Published volume: 0.96 FT^3 total, 0.48 FT^3 per subwoofer. Mounting depth 4". Cutout 7 1/8". Sealed. Location: under rear seat, down firing. The page does not state a sub count; two 8" is read from "dual" and "2 individual chambers".

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.