Chevrolet C4500 2004–2006 — technical service bulletin
Bulletin 3504 · NHTSA communication 10016491 · issued Sep 14, 2005
Technical service bulletin
communication type
Engine and Engine Cooling
component
2004–2006
model years
14
vehicle entries
Official summary
Hard start hot only after the engine has reached operating temperature and then shut off. *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.