1999 GMC Jimmy Speaker Sizes
The 1999 GMC Jimmy factory audio system includes a dashboard that can accommodate a 3.5 inch speaker size, alongside a dashboard and front door panel supporting 4x6 inch and 6.5 inch units respectively. Additionally, rear door panels accept 6.5 inch speakers, while rear locations support 6x9 inch units. Full-range and midbass compatible speaker types serve as a replacement upgrade.
Specific details regarding locations, speaker sizes, and types are outlined in the compatibility chart.
| Location | Size | Type | Notes |
|---|---|---|---|
| Dashboard | 3.5 | Full-Range |
|
| Dashboard | 4x6 | Full-Range |
|
| Front Door Panel | 6.5 | Midbass / Full-Range |
|
| Rear | 6x9 | Full-Range |
|
| Rear Door Panel | 6.5 | Midbass / Full-Range |
|
1999 GMC Jimmy Speaker Replacement Summary
5
total positions
2
easy to replace
1
high priority
0
professional only
Replacement difficulty:
Low: 2 Medium: 3 High: 0Replacement priority:
High: 1 Medium: 4 Low: 01999 GMC Jimmy Radio Slot Size (DIN)
| DIN Type | Size (inch) | Size (mm) | Notes |
|---|---|---|---|
| Single DIN or Double DIN | 7"×2" or 7"×4" | 180×50 or 180×100 | Vehicle supports both radio sizes |
- Always measure the slot before purchasing a new radio
- Check slot depth - it may vary
Additional Notes
- The 1999 GMC Jimmy features multiple speaker locations throughout the cabin, with the front door panels housing 6.5 inch speakers that accept either midbass or full-range drivers, potentially making them a primary target for audio enhancement efforts.
- Dashboard locations accommodate two different speaker sizes, with 3.5 inch and 4x6 inch full-range options, suggesting the factory configuration may have varied based on trim level or equipment packages.
- Both front and rear door panels utilize the same 6.5 inch mounting format and support identical driver types, which could simplify component selection when planning a complete door speaker replacement strategy.
- The rear location supports 6x9 inch full-range speakers, a size that typically offers increased bass response compared to smaller formats, though integration depends on the specific mounting area within the vehicle.
- Full-range speakers appear compatible across all listed locations, while midbass drivers present an option only for the door panel positions, indicating these locations may offer better acoustic coupling for lower frequency reproduction.
- The radio opening accepts both single DIN and double DIN head units, providing flexibility for aftermarket stereo installation that could serve as a foundation for broader audio system improvements.
- With five distinct speaker locations documented, the factory audio layout suggests a distributed sound field design rather than a concentrated speaker arrangement.
- The door panel speakers' dual compatibility with midbass and full-range types indicates these positions may benefit from component separation strategies, where dedicated midbass drivers pair with separate tweeters for extended high-frequency response.