2020 GMC Yukon Speaker Sizes and Audio System Guide
2020 GMC Yukon Speaker Sizes and Audio System Guide
This page summarizes the 2020 GMC Yukon factory speaker layout, common speaker locations, and the key notes you should verify before planning an upgrade. Equipment can vary by trim, body style, and audio package, so the speaker count and audio hardware may differ from one Yukon to another. Use the generation-based data here as a starting point, and verify fitment details before ordering replacement speakers or audio components.
Data verified by Nick Marchenko, PhD
Speaker Size Chart – 2020 GMC Yukon
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 | Center Channel | 3.5 inch | if equipped |
| Dash Corner | Tweeter | 2.5 inch | if equipped |
| Rear Door | Full-Range | 6.5 inch | |
| Rear Pillar | Tweeter | 2.5 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 – 2020 GMC Yukon
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 | 10 | std | SiriusXM AM/FM/HD/Satellite, seek-scan | ✓ |
| Denali 4x4 | 10 | std | SiriusXM AM/FM/HD/Satellite, seek-scan | ✓ |
| SLE 4x2 | 9 | – | SiriusXM AM/FM/HD/Satellite, seek-scan | – |
| SLE 4x4 | 9 | – | SiriusXM AM/FM/HD/Satellite, seek-scan | – |
| SLT 4x2 | 9 | – | SiriusXM AM/FM/HD/Satellite, seek-scan | ✓ |
| SLT 4x4 | 9 | – | SiriusXM AM/FM/HD/Satellite, seek-scan | ✓ |
| SLT Standard Edition 4x2 | 9 | – | SiriusXM AM/FM/HD/Satellite, seek-scan | ✓ |
| SLT Standard Edition 4x4 | 9 | – | SiriusXM AM/FM/HD/Satellite, seek-scan | ✓ |
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 2020 GMC Yukon?
Aftermarket fitment should start with the factory speaker locations listed for this 2020 GMC Yukon, but diameter alone is not enough. Based on generation data, the front doors use 6 x 9 inch full-range speakers and the rear doors use 6.5 inch full-range speakers, while selected audio systems may also include dash corner and rear pillar tweeters if equipped. Factory amplifier details should be verified by trim and audio package, and speaker count can vary from 9 to 10 depending on configuration.
Usually Safe Upgrades
- If your vehicle uses the front door location, 6 x 9 inch full-range speakers are the factory size to compare against when shopping for replacements.
- If your vehicle uses the rear door location, 6.5 inch full-range speakers are the factory size to compare against when shopping for replacements.
- If your vehicle uses the dash corner location, a 3.5 inch center channel may be present if equipped, and some audio systems may also use a 2.5 inch tweeter there.
- If your vehicle uses the rear pillar location, a 2.5 inch tweeter may be present if equipped.
- If your Yukon is equipped with a premium or factory-amplified audio system, speaker choice should be matched to the system layout and speaker count.
Check Before Buying
- Verify the exact speaker location in your Yukon before ordering, because the 2020 location data is based on generation data and should be confirmed on the vehicle.
- Check mounting depth and bracket style, since the listed factory size does not guarantee the aftermarket speaker will physically fit the opening.
- Confirm connector type and wiring before buying, especially if the vehicle has a premium audio package or factory amplifier.
- Match the replacement to the correct location, since front door, rear door, dash corner, and rear pillar openings can use different sizes.
- If your vehicle has tweeters or a center channel, confirm whether those parts are included in your audio system before selecting replacements.
Installation Notes
The 2020 GMC Yukon uses generation-based speaker data, so verify the exact audio package before ordering parts. Front door locations are listed as 6 x 9 inch full-range speakers, and rear door locations are listed as 6.5 inch full-range speakers. Dash corner and rear pillar tweeters may be present if equipped, and some systems may also include a dash corner center channel. Factory amplifier details should be verified by trim and audio package, since equipment can vary across the lineup. During installation, remove panels carefully to avoid breaking clips and watch for tight wiring paths behind the doors and dash. Check speaker depth before choosing replacements, especially in the front doors where space can be limited. Mounting adapters may be needed to match the factory openings, and harness adapters can help preserve the original wiring. If your vehicle has the factory subwoofer, confirm enclosure access and wiring before planning upgrades. Always test each speaker location after reassembly to confirm balance, polarity, and proper operation.
Moderate difficulty, with trim-dependent audio equipment and panel removal that require careful verification before installation.
Common Mistakes When Replacing Speakers
The 2020 GMC Yukon can vary by trim and audio package, so the biggest audio upgrade mistakes usually happen when buyers assume every vehicle is wired the same way.
- Buying based only on the body-style label instead of checking actual speaker locations on the vehicle.
- Skipping trim and audio package verification, even though the speaker count can range from 9 to 10 and factory amplifier details should be confirmed by trim.
- Ordering speakers without checking mounting depth, because the listed sizes do not guarantee there is enough clearance behind the panel.
- Ignoring connector and harness differences, which can cause fitment issues even when the speaker size looks correct on paper.
- Assuming tweeters or the dash corner center channel are present on every Yukon, when those components may be included only if equipped.
- Reassembling everything before testing the system, since it is much easier to catch wiring or polarity problems before the panels go back on.
Generation & Model Family
The 2020 GMC Yukon belongs to the Fourth Generation (GMTK2UC/G) (2015–2020) 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 2020 GMC Yukon uses a speaker layout that can vary by trim and audio package, so it is smart to verify the exact system before ordering parts. Based on generation data, the front stage and optional dash or rear tweeters are the best places to start if you want clearer sound, stronger output, or a cleaner factory-style upgrade path.
| Goal | Best Upgrade Path | Why |
|---|---|---|
| Better clarity | Upgrade the front door speakers first, then add front-stage tweeters if equipped or present in your system. A quality front-stage upgrade usually gives the biggest improvement in vocal detail, midrange smoothness, and high-frequency clarity. | The front speakers do most of the work for music detail, and the optional tweeter locations can help sharpen the sound when they are part of the vehicle’s audio package. |
| More bass | Add an aftermarket subwoofer to complement the factory speakers and fill in the low end. If your Yukon has a factory subwoofer in a premium audio package, verify the system layout before choosing an upgrade path so the new bass solution works correctly with the existing setup. | A dedicated subwoofer is the most effective way to add low-frequency output without asking the door speakers to handle bass they were not designed to produce. |
| Louder sound | Use properly matched speakers and amplifier integration to improve volume and reduce distortion. Factory amplifier details should be verified by trim and audio package before adding aftermarket amplifiers, especially on trims with premium audio equipment. | Higher output only works well when the speakers and amplifier are matched correctly, and system integration matters when the vehicle already uses factory amplification. |
| Budget improvement | Replace the front door speakers first, since they handle the most important part of everyday listening. Choose same-size replacement speakers with correct mounting brackets so you can get a noticeable improvement without changing the entire system at once. | Front speakers usually deliver the best value because they affect the sound you hear most often, especially for music, podcasts, and calls. |
| 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 works well when you want better sound without changing the look of the cabin. | Keeping the original mounting points and wiring style helps the upgrade blend in with the interior while still improving audio performance. |
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 2020 GMC Yukon?
Based on generation data, the front door speakers are 6 x 9 inch full-range units. Verify before ordering, since 2020 speaker location data is based on the same generation and can vary by audio package.
What size are the rear speakers in a 2020 GMC Yukon?
Based on generation data, the rear door speakers are 6.5 inch full-range units. Verify fitment before ordering because speaker details for 2020 are based on generation data.
Does the 2020 GMC Yukon have a factory subwoofer?
A factory subwoofer is not listed in the available data. If your Yukon has one, it would depend on the audio package, so verify the trim and equipment before ordering parts.
Do I need mounting adapters to replace the speakers?
Mounting adapters may be needed depending on the speaker location and the replacement speaker design. Check the factory opening and mounting depth before choosing parts, especially since the available data is based on generation information.
Can I replace the speakers without replacing the radio?
Yes, speaker replacement can be done without replacing the radio in many cases. The best setup depends on your trim and audio package, so verify the factory system before ordering new speakers.
How do I verify the factory amplifier on a 2020 GMC Yukon?
Factory amplifier details should be verified by trim and audio package. Some trims list an amplifier, while others do not show one in the available data, so check your exact configuration before planning upgrades.