Geo Metro 1993–1994 — technical service bulletin
Bulletin 436508 · NHTSA communication 37945 · issued Dec 1, 1994
Technical service bulletin
communication type
Engine and Engine Cooling
component
1993–1994
model years
2
vehicle entries
Official summary
Moisture may become trapped in the engine vacuum line between tbi unit and map sensor and freezing, causing a no start condition. *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.