Jeep Grand Cherokee 1997–1998 — technical service bulletin
Bulletin 182798 · NHTSA communication 602199 · issued Aug 21, 1998
Technical service bulletin
communication type
Engine and Engine Cooling
component
1997–1998
model years
2
vehicle entries
Official summary
Subject pertaining to dtc $b8 and/ or mil illumination. Leak detection pump sw or mechanical fault will be seen caused by apartial vacuum blockage in the leak detection vacuum supply. *ak
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.