Chevrolet Trailblazer 2006–2007 — technical service bulletin
Bulletin 3911 · NHTSA communication 10020884 · issued Jan 26, 2007
Technical service bulletin
communication type
Suspension
component
2006–2007
model years
2
vehicle entries
Official summary
Growl, groan, shudder, or bind from the differential when turning. *kb
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.