2014 GMC Sierra 1500 Speaker Sizes and Audio System Guide
2014 GMC Sierra 1500 Speaker Sizes and Audio System Guide
This page outlines the factory speaker layout for the 2014 GMC Sierra 1500, along with the key upgrade notes that matter before choosing replacement audio parts. Equipment can vary by trim, body style, or audio package, so speaker count and location may differ from one truck to another. Factory amplifier details should be verified by trim and audio package, and selected audio systems may also include tweeters or a subwoofer if equipped.
Data verified by Nick Marchenko, PhD
Speaker Size Chart – 2014 GMC Sierra 1500
Use this table as the main reference. Fitment depends on trim, factory audio package, mounting depth, and adapter availability.
| Location | Type | Factory Size | Note |
|---|---|---|---|
| Front Door | Full-Range | 6 x 9 inch | |
| Dash Corner | Tweeter | 2.5 inch | if equipped |
| Rear Door | Full-Range | 6.75 inch | |
| Mid-Rear Pillar (C) | Full-Range | 4 x 6 inch | |
| Front Center Console | Subwoofer | 6.5 inch | if equipped |
Generic speaker location diagram. The table above shows the specific factory sizes for this vehicle. Exact location details may vary by body style and trim.
Speaker Count by Trim – 2014 GMC Sierra 1500
Speaker count and audio equipment vary by trim and factory audio package. This table lists known configurations from our database.
| Trim | Speakers | Amplifier | Radio | Navigation |
|---|---|---|---|---|
| Denali 4x2 Crew Cab 5.75 ft. box 143.5 in. WB | 7 | – | – | – |
| Denali 4x2 Crew Cab 6.5 ft. box 153.5 in. WB | 7 | – | – | – |
| Denali 4x4 Crew Cab 5.75 ft. box 143.5 in. WB | 7 | – | – | – |
| Denali 4x4 Crew Cab 6.5 ft. box 153.5 in. WB | 7 | – | – | – |
| Base 4x2 Crew Cab 5.75 ft. box 143.5 in. WB | 6 | – | – | – |
| Base 4x2 Crew Cab 6.5 ft. box 153.5 in. WB | 6 | – | – | – |
| Base 4x2 Double Cab 6.6 ft. box 143.5 in. WB | 6 | – | – | – |
| Base 4x4 Crew Cab 5.75 ft. box 143.5 in. WB | 6 | – | – | – |
| Base 4x4 Crew Cab 6.5 ft. box 153.5 in. WB | 6 | – | – | – |
| Base 4x4 Double Cab 6.6 ft. box 143.5 in. WB | 6 | – | – | – |
| SLE 4x2 Crew Cab 5.75 ft. box 143.5 in. WB | 6 | – | – | – |
| SLE 4x2 Crew Cab 6.5 ft. box 153.5 in. WB | 6 | – | – | – |
| SLE 4x2 Double Cab 6.6 ft. box 143.5 in. WB | 6 | – | – | – |
| SLE 4x2 Regular Cab 6.6 ft. box 119 in. WB | 6 | – | – | – |
| SLE 4x2 Regular Cab 8 ft. box 133 in. WB | 6 | – | – | – |
| SLE 4x4 Crew Cab 5.75 ft. box 143.5 in. WB | 6 | – | – | – |
| SLE 4x4 Crew Cab 6.5 ft. box 153.5 in. WB | 6 | – | – | – |
| SLE 4x4 Double Cab 6.6 ft. box 143.5 in. WB | 6 | – | – | – |
| SLE 4x4 Regular Cab 6.6 ft. box 119 in. WB | 6 | – | – | – |
| SLE 4x4 Regular Cab 8 ft. box 133 in. WB | 6 | – | – | – |
| SLT 4x2 Crew Cab 5.75 ft. box 143.5 in. WB | 6 | – | – | – |
| SLT 4x2 Crew Cab 6.5 ft. box 153.5 in. WB | 6 | – | – | – |
| SLT 4x2 Double Cab 6.6 ft. box 143.5 in. WB | 6 | – | – | – |
| SLT 4x4 Crew Cab 5.75 ft. box 143.5 in. WB | 6 | – | – | – |
| SLT 4x4 Crew Cab 6.5 ft. box 153.5 in. WB | 6 | – | – | – |
| SLT 4x4 Double Cab 6.6 ft. box 143.5 in. WB | 6 | – | – | – |
| Base 4x2 Regular Cab 6.6 ft. box 119 in. WB | 4 | – | – | – |
| Base 4x2 Regular Cab 8 ft. box 133 in. WB | 4 | – | – | – |
| Base 4x4 Regular Cab 6.6 ft. box 119 in. WB | 4 | – | – | – |
| Base 4x4 Regular Cab 8 ft. box 133 in. WB | 4 | – | – | – |
Data sourced from manufacturer specifications. Verify with the window sticker or dealer before ordering audio components.
Vehicle and Audio System Specifications
This block helps identify the vehicle and its audio system configuration for fitment decisions.
What Speakers Fit the 2014 GMC Sierra 1500?
Aftermarket fitment should start with the factory speaker locations listed for this 2014 GMC Sierra 1500, but diameter alone is not enough. Check mounting depth, bracket fit, connector type, and whether the vehicle uses a premium or factory-amplified audio system. Factory amplifier details should be verified by trim and audio package. Selected audio systems may also include a 6.5-inch front center console subwoofer if equipped, so confirm the exact layout before ordering.
Usually Safe Upgrades
- If your vehicle uses the front door location, a 6 x 9 inch full-range speaker is the factory size to match.
- If your vehicle uses the rear door location, a 6.75 inch full-range speaker is the factory size to match.
- If your vehicle uses the mid-rear pillar (C) location, a 4 x 6 inch full-range speaker is the factory size to match.
- If your vehicle has dash corner tweeters, the factory opening is 2.5 inch if equipped.
- If your vehicle has the front center console subwoofer, the factory size is 6.5 inch if equipped.
Check Before Buying
- Confirm the exact speaker location in your truck before shopping, since equipment can vary by trim and audio package.
- Measure mounting depth and check for any factory bracket or adapter requirements before choosing a replacement.
- Verify connector style and polarity so the new speaker matches the vehicle wiring.
- If you are upgrading a system with tweeters or a subwoofer, make sure the replacement set matches the equipped audio layout.
Installation Notes
The 2014 GMC Sierra 1500 uses several speaker locations, so confirm your exact audio package before ordering parts. Front door openings use 6 x 9 inch full-range speakers, rear door openings use 6.75 inch full-range speakers, and mid-rear pillar locations use 4 x 6 inch full-range speakers. Dash corner tweeters are listed if equipped, and the front center console subwoofer is also listed if equipped. Factory amplifier details should be verified by trim and audio package. During installation, remove the door or dash panels carefully to avoid breaking clips, and watch for wiring routed behind the trim. Check speaker depth before final assembly, especially in the front doors and dash area, since clearance can vary. Mounting adapters may be needed to match the factory openings, and harness adapters can help keep the wiring clean and reversible. If your vehicle has the factory subwoofer, confirm enclosure access and connector style before replacing it. Always test each speaker for balance and polarity before reinstalling the panels.
Moderate difficulty, since trim-dependent audio equipment and panel removal can affect the install.
Common Mistakes When Replacing Speakers
The biggest audio upgrade mistakes on a 2014 GMC Sierra 1500 usually come from assuming every truck is wired the same when the speaker layout can vary by trim and audio package.
- Buying based only on the body-style label instead of checking actual speaker locations on the vehicle. This truck can have different speaker counts depending on trim, so verify the exact locations and count before ordering parts.
- Skipping trim and audio package checks before choosing speakers or a radio. Speaker count ranges from 4 to 7, and factory amplifier details should be verified by trim and audio package.
- Ignoring optional equipment like the dash corner tweeters if equipped and the front center console subwoofer if equipped. Those pieces may change what you need for a complete upgrade.
- Not checking mounting depth and available space behind the front door, rear door, and dash locations before buying speakers. Size alone is not enough if the new speaker is too deep for the opening.
- Overlooking connector style and harness compatibility. Even when the speaker size matches, the factory plugs and wiring layout still need to be confirmed before installation.
- Reassembling the doors or dash before testing the system. Always test every speaker, balance, and fade setting first so you can catch wiring or polarity issues while access is still easy.
Generation & Model Family
The 2014 GMC Sierra 1500 belongs to the Fourth generation (GMTK2XX) (2014–2015) family. Nearby model years often share similar speaker locations and audio layouts, but exact fitment can vary by trim and audio package – verify before ordering.
Recommended Upgrade Path
The 2014 GMC Sierra 1500 uses a speaker layout that can vary by trim and audio package, so it is worth confirming the exact setup before buying parts. A smart upgrade plan starts with the front stage, then adds bass or amplification only if your current system needs it. That approach helps you spend where the sound improvement will be most noticeable.
| Goal | Best Upgrade Path | Why |
|---|---|---|
| Better clarity | Upgrade the front door speakers first, then add the dash corner tweeters if equipped to improve detail and vocal clarity. If the truck has a factory subwoofer, keep the front stage as the priority and match the new speakers carefully to the rest of the system. | The front stage carries most of the music you hear, so cleaner front speakers make the biggest difference in clarity. Tweeters, if equipped, can sharpen highs and improve the sense of detail without changing the whole system at once. |
| More bass | If the factory subwoofer is equipped, treat it as a starting point and add an aftermarket subwoofer solution for stronger low-end output. If your truck does not have a subwoofer, adding one is the most effective way to build bass without overworking the factory speakers. | Bass improvement usually comes from dedicated low-frequency hardware, not from full-range speakers alone. A separate subwoofer gives you more low-end impact and helps the rest of the system play cleaner. |
| Louder sound | Use properly matched speakers and amplifier integration to improve volume and reduce distortion. Before adding aftermarket amplifiers, verify factory amp details by trim and audio package, since radio and navigation equipment can vary. | Higher volume is easier to achieve when the speakers and power source are matched correctly. Checking the factory audio setup first helps avoid integration problems and keeps the system sounding clean at higher levels. |
| Budget improvement | Replace the front door speakers first with same-size replacement speakers and the correct mounting brackets. This gives you the best value because the front speakers do the most work in everyday listening. | A budget upgrade should focus on the speakers you hear most often. Front door replacements usually deliver the clearest improvement for the money before you spend on the rest of the cabin. |
| Factory look | Use same-size replacement speakers with the correct mounting brackets and harness adapters for a clean install that preserves the factory wiring and appearance. | This approach keeps the interior looking original while still improving sound. Using the right brackets and adapters also helps the installation stay neat and reversible. |
Mounting Adapters and Wiring
The same nominal diameter does not guarantee a direct mount. Before ordering, confirm:
- Speaker depth: Aftermarket speakers often have larger magnets – measure available depth at each location.
- Mounting brackets: Door locations typically need a bracket or spacer to clear the window regulator and achieve correct mounting depth.
- Wiring harness adapters: Use a plug-and-play harness adapter to preserve factory wiring.
- Tweeter mounting cups: Replacing OEM tweeters may require surface-mount cups or brackets depending on the location.
- Factory or premium amplified systems: If the vehicle has a premium or factory-amplified audio system, confirm how the factory radio, amplifier, and speakers are connected before adding aftermarket amplifiers. Depending on the setup, a line output converter, DSP, integration harness, or professional installation may be needed.
- Connector type: Factory connectors vary by trim and model year – confirm compatibility before splicing or using an adapter.
Frequently Asked Questions
What size are the front door speakers in a 2014 GMC Sierra 1500?
The front door speakers are 6 x 9 inch full-range units. Dash corner tweeters may also be present if equipped, depending on the audio package.
What size are the rear speakers in a 2014 GMC Sierra 1500?
Rear speaker size varies by location. The rear door speakers are 6.75 inch full-range, and the mid-rear pillar speakers are 4 x 6 inch full-range.
Does the 2014 GMC Sierra 1500 have a factory subwoofer?
A 6.5 inch front center console subwoofer is listed if equipped. Availability can vary by trim and audio package, so it should be verified for the specific vehicle.
Can I replace the speakers without replacing the radio?
Yes, speaker upgrades can be done while keeping the factory radio. The exact parts needed depend on the speaker location and the vehicle’s audio setup.
Do I need mounting adapters for speaker replacement?
Mounting adapters may be needed because the factory speaker sizes vary by location. The correct adapter depends on whether you are replacing the front door, rear door, or other speakers.
Does the 2014 GMC Sierra 1500 have a factory amplifier?
Factory amplifier details should be verified by trim and audio package. The available trim data does not list a single amplifier setup for every version of this truck.