2017 GMC Terrain Speaker Sizes
The 2017 GMC Terrain factory audio system includes an a-pillar location that accommodates a 1 inch speaker size, while the dashboard accepts 3.5 inch units, and the front door panel and rear door panel accommodate 6.5 inch speakers. Furthermore, the rear side panel accepts an 8 inch unit. Compatible speaker types for a sound system replacement and upgrade consist of tweeters, full-range units, midbass drivers, and woofers.
Specific details regarding locations, speaker sizes, and types are outlined in the compatibility chart.
| Location | Size | Type | Notes |
|---|---|---|---|
| A-Pillar | 1 | Tweeter |
|
| Dashboard | 3.5 | Full-Range |
|
| Front Door Panel | 6.5 | Midbass / Full-Range |
|
| Rear Door Panel | 6.5 | Midbass / Full-Range |
|
| Rear Side Panel | 8 | Woofer |
|
2017 GMC Terrain Speaker Replacement Summary
5
total positions
2
easy to replace
1
high priority
1
professional only
Replacement difficulty:
Low: 2 Medium: 2 High: 1Replacement priority:
High: 1 Medium: 2 Low: 2Additional Notes
- The A-pillar tweeters in the 2017 GMC Terrain handle high-frequency reproduction, while the 8-inch rear side panel woofers focus on low-frequency output, suggesting a factory system designed with frequency-specific driver placement.
- Door panel speakers at 6.5 inches across both front and rear positions allow for either midbass-focused component system installations or full-range replacements, depending on whether the factory tweeters are retained.
- The 3.5-inch dashboard speakers operate as full-range drivers, though their smaller cone area typically limits low-frequency extension compared to the larger door-mounted units.
- Replacing the front door panel speakers may yield more noticeable sound quality improvements than rear door upgrades, as front-stage imaging generally contributes more to the listening experience in most vehicle audio configurations.
- The rear side panel woofers at 8 inches provide dedicated low-frequency reinforcement, which could make subwoofer additions less critical for listeners satisfied with moderate bass extension.
- Component speaker systems utilizing the existing A-pillar tweeter locations might integrate more naturally into the factory mounting points than coaxial replacements that include their own tweeters.