Chevrolet Silverado 2007–2012 — technical service bulletin
Bulletin SB-09-03-09-001 · NHTSA communication 10030766 · issued Apr 1, 2011
Technical service bulletin
communication type
Suspension
component
2007–2012
model years
12
vehicle entries
Official summary
Chevrolet/gmc: a clunking noise coming from the rear of the vehicle. Upon further investigation, the technician may diagnose the noise coming from the rear suspension leaf spring area. *pe updated 6/30/2011. *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.