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November 2, 2015 Service bulletin

14423

Chevrolet technical service bulletin 14423 for 2002-2004 Chevrolet Trailblazer, 2002-2004 GMC Envoy and 2002-2004 Oldsmobile Bravada and others.

Bulletin number
14423
Component
Equipment
Summary
14423 - special coverage. Some 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 vehicle’s service engine soon (ses) light may illuminate, and the owner may notice a fuel odor and/or a few drops of fuel on the ground when refueling the vehicle. Dealers are to replace the fuel tank.

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