GMC TSB #PIT5506A
2011 GMC Sierra 2500
Affected Component: EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
- Summary
- This Preliminary Information communication advises the technician this vibration or growl noise can be difficult to diagnose and using the Pico Scope is recommended for diagnosing this concern. Customers has vibration or growl noise between 45-65 Miles-per-hour.