Chevrolet Silverado 2011 — technical service bulletin
Bulletin PIE-0198 · NHTSA communication 10043014 · issued Nov 1, 2011
Technical service bulletin
communication type
Steering
component
2011
model years
2
vehicle entries
Official summary
Chevrolet/gmc: some vehicles may experience fluid leaking from front drive axle area. After inspection, problem found to be pinion seal leaking. *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.