Dodge Ram 1998–2002 — technical service bulletin
Bulletin 1801901 · NHTSA communication 623143 · issued Sep 3, 2001
Technical service bulletin
communication type
Engine and Engine Cooling
component
1998–2002
model years
5
vehicle entries
Official summary
Some vehicles may experience cold idle engine warming *slc
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.