Mazda Navajo 1991 — technical service bulletin
Bulletin 97083001997 · NHTSA communication 54217 · issued Aug 30, 1997
Technical service bulletin
communication type
Engine and Engine Cooling
component
1991
model years
1
vehicle entries
Official summary
During normal driving conditions or at idle, a "buzzing'' or "rattling" noise may be heard from the exhaust system. *yc
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.