Technical Service Bulletin FSB 381-048 — 2011 MACK CHU
ELECTRICAL SYSTEM
Bulletin Details
| TSB ID | FSB 381-048 |
| Manufacturer | |
| Vehicle | 2011 MACK CHU |
| Component | ELECTRICAL SYSTEM |
| Communication Date |
Bulletin Summary
CERTAIN MACK TRUCKS BUILT BETWEEN JANUARY 1, 2010 AND DECEMBER 31, 2012, MAY EXPERIENCE A POPPING SOUND IN THE SPEAKERS WHEN THE KEY IS IN THE OFF POSITION.
About Technical Service Bulletins
A Technical Service Bulletin (TSB) is a document issued by a vehicle manufacturer to its dealers, describing a known issue with a specific vehicle or set of vehicles and the recommended procedure to fix it. Unlike recalls, TSBs are not mandatory and are typically only performed if an owner reports the related issue. However, TSBs can be an indicator of common problems with a vehicle.