Chevrolet Silverado 2500 2008 — technical service bulletin
Bulletin PIP-4414A · NHTSA communication 10030726 · issued Jun 1, 2009
Technical service bulletin
communication type
Suspension
component
2008
model years
4
vehicle entries
Official summary
Chevrolet/gmc: a whine, grind or clunk noise from the rear axle at speeds above approximately 30 mph (50kph). This condition only applies to 10.5 rear axle assemblies, which are used on 2500 and 3500 series pickups equipped with a 5.0l engine. *pe
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.