Chevrolet Silverado 2002 — technical service bulletin
Bulletin 200202 · NHTSA communication 629815 · issued Feb 20, 2002
Technical service bulletin
communication type
Unknown OR Other
component
2002
model years
2
vehicle entries
Official summary
Some owners of 2500 hd and 3500 series trucks with the 6600 duramax diesel engine may experience the malfunction indicator lamp illuminated after the use of the engine coolant heater as well as diagnostic trouble code p0181. *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.