Ford Expedition 1997–1999 — technical service bulletin
Bulletin 6686 · NHTSA communication 610729 · issued Jul 2, 1999
Technical service bulletin
communication type
Equipment
component
1997–1999
model years
5
vehicle entries
Official summary
Subject regarding air conditioner vacuum reservoir / check valve 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.