Buick Rainier 2002–2004 — technical service bulletin
Bulletin 14423A · NHTSA communication 10089419 · issued Dec 14, 2015
Technical service bulletin
communication type
Fuel System, Other
component
2002–2004
model years
11
vehicle entries
Official summary
14423a - special coverage (revised part information). Some 2004 model year buick rainier, 2003-2004 model year chevrolet ssr, 2002-2004 model year chevrolet trailblazer, chevrolet trailblazer ext, gmc envoy, gmc envoy xl, and oldsmobile bravada, and 2004 model year gmc envoy xuv vehicles contain a fuel tank inlet check valve (icv) that could fracture. The icv is located above the full fuel level. A fractured icv could allow fuel vapors to pass through and droplets of fuel to accumulate on the side of the fuel tank as it passes over the fracture during refueling. If the icv fractures, the vehic
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.