1999 GMC Jimmy Speaker Sizes

The 1999 GMC Jimmy speaker size chart provides factory audio system specifications for all locations. Information covers dashboard, front door panel, rear door panel, and rear positions. Details include replacement speaker sizes for aftermarket upgrade installations, along with factory speaker specifications and locations within the vehicle audio system.

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Speaker Details by Location
Location Size Type Notes
Dashboard 3.5 Full-Range
  • Requires panel disassembly
  • Medium replacement priority
  • Replacement difficulty: medium
Dashboard 4x6 Full-Range
  • Requires panel disassembly
  • Medium replacement priority
  • Replacement difficulty: medium
Front Door Panel 6.5 Midbass / Full-Range
  • Standard installation
  • High replacement priority
  • Replacement difficulty: low
Rear 6x9 Full-Range
  • Secondary sound location
  • Medium replacement priority
  • Replacement difficulty: medium
Rear Door Panel 6.5 Midbass / Full-Range
  • Standard installation
  • Medium replacement priority
  • Replacement difficulty: low

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: 0

Replacement priority:

High: 1 Medium: 4 Low: 0

1999 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.