NHTSA recall 13V080000

What's wrong: Affects vehicles equipped with a four tank configuration using a pressure relief device (prd) and pressure relief vent pipe assembly. In the affected vehicles, the pressure relief vent pipe assembly may have been built incorrectly.

Why it matters: If a pressure relief device activates with an improperly assembled vent pipe, compressed natural gas may be vented into the passenger compartment. If an ignition source is present, an explosion or fire may result.

The fix: Impco automotive, in cooperation with general motors will inspect and make any necessary repairs on the pressure relief device and vent pipe assembly. The safety recall began on March 28, 2013.