Chevrolet Silverado 2005–2006 — technical service bulletin
Bulletin 050601029 · NHTSA communication 10017567 · issued Sep 1, 2005
Technical service bulletin
communication type
Engine and Engine Cooling
component
2005–2006
model years
4
vehicle entries
Official summary
Information on 4.3l engine front crankshaft pulley appearing to be out of round (normal condition). *tt
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.