Hyundai Sonata 1986–1998 — technical service bulletin
Bulletin 97100120012 · NHTSA communication 54113 · issued Oct 1, 1997
Technical service bulletin
communication type
Engine and Engine Cooling
component
1986–1998
model years
13
vehicle entries
Official summary
Shop manual correction on cylinder head bolt torque specification. *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.