Chevrolet C4500 2006 — technical service bulletin
Bulletin 060601006 · NHTSA communication 10019849 · issued Mar 1, 2006
Technical service bulletin
communication type
Engine and Engine Cooling
component
2006
model years
8
vehicle entries
Official summary
Information on 2006 6.6 lbz lly duramax diesel engine cylinder head gasket change - new head gasket and torque specification. *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.