Geo Metro 1990 — technical service bulletin
Bulletin CAMP/90C51 · NHTSA communication 37961 · issued Dec 1, 1994
Technical service bulletin
communication type
Engine and Engine Cooling
component
1990
model years
1
vehicle entries
Official summary
The administrator of the us environmental protection agency (epa) and general motors have determined that certain 1990 geo metro vehicles with 1.0l engines may exceed high altitude carbon monoxide federal emission standards. This condition applies to vehicles registered in colorado, nevada new mexico and utah (vehicles which have moved to thes states from california which are equipped with rpo yf5 do not require this campaign repair). These standards were established to protect the the public health and welfare from dangers of air pollution. Excess emission of pollutants may cause a vehicle to
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.