2013 GMC Sierra 1500 Speaker Sizes and Audio System Guide
2013 GMC Sierra 1500 Speaker Sizes and Audio System Guide
This page covers the factory speaker layout, common upgrade considerations, and the equipment differences that matter on a 2013 GMC Sierra 1500. Speaker and audio equipment can vary by trim, body style, and audio package, so the exact setup should be verified before choosing replacements. Factory amplifier details should also be checked by trim and audio package, since availability is not the same across every version.
Data verified by Nick Marchenko, PhD
Speaker Size Chart – 2013 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 Pillar | Tweeter | .75 inch | if equipped |
| Front Door | Full-Range | 6.5 inch | |
| Rear Door | Full-Range | 5.25 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 – 2013 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 | std | – | – |
| Denali 4x4 Crew Cab 5.75 ft. box 143.5 in. WB | 7 | std | – | – |
| SLT 4x2 Crew Cab 5.75 ft. box 143.5 in. WB | 7 | std | – | – |
| SLT 4x2 Extended Cab 6.6 ft. box 143.5 in. WB | 7 | std | – | – |
| SLT 4x2 Extended Cab 8 ft. box 157.5 in. WB | 7 | std | – | – |
| SLT 4x4 Crew Cab 5.75 ft. box 143.5 in. WB | 7 | std | – | – |
| SLT 4x4 Extended Cab 6.6 ft. box 143.5 in. WB | 7 | std | – | – |
| SLT 4x4 Extended Cab 8 ft. box 157.5 in. WB | 7 | std | – | – |
| SL 4x2 Crew Cab 5.75 ft. box 143.5 in. WB | 6 | – | – | – |
| SL 4x2 Extended Cab 6.6 ft. box 143.5 in. WB | 6 | – | – | – |
| SL 4x4 Crew Cab 5.75 ft. box 143.5 in. WB | 6 | – | – | – |
| SL 4x4 Extended Cab 6.6 ft. box 143.5 in. WB | 6 | – | – | – |
| SLE1 4x2 Crew Cab 5.75 ft. box 143.5 in. WB | 6 | opt | – | – |
| SLE1 4x2 Extended Cab 6.6 ft. box 143.5 in. WB | 6 | opt | – | – |
| SLE1 4x2 Extended Cab 8 ft. box 157.5 in. WB | 6 | opt | – | – |
| SLE1 4x4 Crew Cab 5.75 ft. box 143.5 in. WB | 6 | opt | – | – |
| SLE1 4x4 Extended Cab 6.6 ft. box 143.5 in. WB | 6 | opt | – | – |
| SLE1 4x4 Extended Cab 8 ft. box 157.5 in. WB | 6 | opt | – | – |
| Work Truck 4x2 Crew Cab 5.75 ft. box 143.5 in. WB | 6 | – | – | – |
| Work Truck 4x2 Extended Cab 6.6 ft. box 143.5 in. WB | 6 | – | – | – |
| Work Truck 4x2 Extended Cab 8 ft. box 157.5 in. WB | 6 | – | – | – |
| Work Truck 4x4 Crew Cab 5.75 ft. box 143.5 in. WB | 6 | – | – | – |
| Work Truck 4x4 Extended Cab 6.6 ft. box 143.5 in. WB | 6 | – | – | – |
| Work Truck 4x4 Extended Cab 8 ft. box 157.5 in. WB | 6 | – | – | – |
| Xtra Fuel Economy 4x2 Crew Cab 5.75 ft. box 143.5 in. WB | 6 | opt | – | – |
| SLE1 4x2 Regular Cab 6.6 ft. box 119 in. WB | 4 | – | – | – |
| SLE1 4x2 Regular Cab 8 ft. box 133 in. WB | 4 | – | – | – |
| SLE1 4x4 Regular Cab 6.6 ft. box 119 in. WB | 4 | – | – | – |
| SLE1 4x4 Regular Cab 8 ft. box 133 in. WB | 4 | – | – | – |
| Work Truck 4x2 Regular Cab 6.6 ft. box 119 in. WB | 4 | – | – | – |
| Work Truck 4x2 Regular Cab 8 ft. box 133 in. WB | 4 | – | – | – |
| Work Truck 4x4 Regular Cab 6.6 ft. box 119 in. WB | 4 | – | – | – |
| Work Truck 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 2013 GMC Sierra 1500?
Aftermarket fitment should start with the factory speaker locations listed for this 2013 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 tweeter or a front center console subwoofer if equipped, so confirm the exact layout before ordering.
Usually Safe Upgrades
- If your vehicle uses the front door 6.5 inch location, that is the main full-range speaker position to match first.
- If your vehicle uses the rear door 5.25 inch location, choose a speaker sized for that opening and verify the mounting depth.
- If your vehicle has the front pillar tweeter location, use a .75 inch tweeter only if equipped.
- If your vehicle includes the front center console 6.5 inch subwoofer location, match that opening only if equipped.
Check Before Buying
- Confirm the exact trim and audio package, since speaker count and amplifier setup vary across this model.
- Measure the available mounting depth and check for any factory bracket or adapter requirements before buying.
- Verify the connector style at each location so the replacement matches the vehicle wiring.
- Do not assume every Sierra 1500 has the same speaker layout, because equipment can vary by trim and audio system.
Installation Notes
The 2013 GMC Sierra 1500 uses different speaker layouts depending on trim and audio package, so verify the exact system before ordering parts. Front door speakers are 6.5 inch, rear door speakers are 5.25 inch, and some vehicles may also have .75 inch front pillar tweeters and a 6.5 inch front center console subwoofer if equipped. Panel removal is required at the doors, and careful trim handling helps avoid broken clips or scuffed panels. Check speaker depth before installation, especially in the front doors, because clearance can vary with the factory basket and grille design. Mounting adapters may be needed to secure aftermarket speakers properly, and harness adapters help keep factory wiring intact. If your vehicle has the factory subwoofer, confirm the enclosure and wiring before replacing it. Factory amplifier details should be verified by trim and audio package, since some trims include amplified systems and others do not. Always test polarity, balance, and fade after installation to make sure every location plays correctly.
Moderate difficulty, since trim-dependent audio equipment and panel removal can make the job more involved than a basic speaker swap.
Common Mistakes When Replacing Speakers
When shopping for speakers for a 2013 GMC Sierra 1500, the biggest errors usually come from assuming every truck uses the same audio layout or skipping a few fitment checks before ordering parts.
- Buying based only on the body-style label instead of checking actual speaker locations on the vehicle.
- Ignoring trim and audio package differences, since speaker count and amplifier setup can change from 4 to 7 speakers and factory amplifier details should be verified by trim and audio package.
- Ordering front pillar tweeters or a front center console subwoofer without confirming they are equipped on the specific truck, since both are listed as if equipped.
- Skipping mounting depth and connector checks, which can cause a speaker to physically fit the opening but still not install correctly with the factory hardware.
- Assuming the same speaker layout applies everywhere in the cabin instead of matching the actual front door, rear door, and optional upper or center locations on the vehicle.
- Reassembling the door panels before testing the new speakers, which can hide wiring or polarity issues that are easier to catch before everything is put back together.
Generation & Model Family
The 2013 GMC Sierra 1500 belongs to the Third generation (GMT900) (2007–2013) 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 2013 GMC Sierra 1500 uses different audio setups across trims, so equipment can vary from one truck to another. A smart upgrade plan starts with the most important listening positions and then builds from there. Front-stage improvements usually deliver the biggest change in everyday sound, while bass, volume, and factory-style installs can be tailored to the system already in the truck.
| Goal | Best Upgrade Path | Why |
|---|---|---|
| Better clarity | Upgrade the front door speakers first, then add front pillar tweeters if equipped to improve detail and vocal clarity. If the truck has a factory amplifier or premium audio package, verify integration before choosing aftermarket speakers. | Front-stage upgrades have the biggest effect on clarity because most of the music you hear comes from the front of the cabin. Tweeters, if equipped, can sharpen highs and improve the overall sound balance. |
| More bass | If the truck has the factory front center console subwoofer, confirm the trim and audio package before replacing or supplementing it with an aftermarket subwoofer. If no subwoofer is present in your setup, adding a subwoofer is the best way to extend low-end output. | Bass upgrades work best when they are matched to the existing system. A factory subwoofer, if equipped, may need careful integration, while an aftermarket sub can add the low-end impact that factory speakers usually cannot provide on their own. |
| Louder sound | Properly matched speakers and amplifier integration can improve volume and reduce distortion. Before adding an aftermarket amplifier, verify whether your truck has a factory amplifier or premium audio system so the new gear is matched correctly. | Higher volume without harshness depends on system matching. When speakers and amplification are chosen for the truck’s existing audio setup, the result is cleaner output and less strain at higher listening levels. |
| Budget improvement | Replace the front door speakers first using same-size replacement speakers with correct mounting brackets. This gives the best value because the front doors handle the most important day-to-day sound. | A budget-focused upgrade should target the speakers you hear most often. Front doors are the best starting point for a noticeable improvement without replacing the entire system at once. |
| 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. | A factory-style upgrade keeps the cabin looking original while still improving sound. Using the right brackets and harness adapters helps the installation stay neat and consistent with the truck’s interior. |
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 2013 GMC Sierra 1500?
The front door speakers are 6.5 inches. Front pillar tweeters are 0.75 inch if equipped, and the exact audio setup can vary by trim and package.
What size are the rear door speakers?
The rear door speakers are 5.25 inches. Some trims use different speaker counts overall, so the full audio layout should be checked by trim.
Does the 2013 Sierra 1500 have a factory subwoofer?
A 6.5-inch front center console subwoofer is listed if equipped. It is trim-dependent, so verify the audio package before planning upgrades.
Can I replace the speakers without replacing the radio?
Yes, speaker replacement can be done while keeping the factory radio in place. The best approach depends on the trim, speaker count, and whether the vehicle has an amplifier.
Do I need mounting adapters for speaker replacement?
Mounting adapters may be needed depending on the speaker location and the replacement speaker design. Check the front door and rear door sizes before choosing parts.
How do I know if my truck has a factory amplifier?
Factory amplifier details should be verified by trim and audio package. Some trims list a standard amplifier, while others list it as optional or not included.