Chevrolet Blazer 1996–1997 — technical service bulletin
Bulletin 776512 · NHTSA communication 52347 · issued Apr 1, 1997
Technical service bulletin
communication type
Engine and Engine Cooling
component
1996–1997
model years
6
vehicle entries
Official summary
Engine rough, miss, and oxygen sensor dtc's (replace oxygen sensor jumper harness). *tw
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.