Chevrolet Silverado 2001 — technical service bulletin
Bulletin 070501 · NHTSA communication 619774 · issued May 7, 2001
Technical service bulletin
communication type
Engine and Engine Cooling
component
2001
model years
2
vehicle entries
Official summary
This message is about engine mechanical cylinder location and the confusion in understanding the correct identification of the 6600 duramax cylinder location. *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.