Chevrolet Silverado 2004–2005 — technical service bulletin
Bulletin 050603001 · NHTSA communication 10014989 · issued Mar 1, 2005
Technical service bulletin
communication type
Engine and Engine Cooling
component
2004–2005
model years
4
vehicle entries
Official summary
Revised engine electrical and automatic transmission - 4l60e/4l65e subsections - new caution statements added. *tt
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.