Chevrolet Silverado 2002–2004 — technical service bulletin
Bulletin 3299 · NHTSA communication 10013563 · issued Apr 21, 2005
Technical service bulletin
communication type
Engine and Engine Cooling
component
2002–2004
model years
6
vehicle entries
Official summary
Diesel oil leak from pcv vent tube. *eh
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.