General Motors LLC (GM) is recalling certain model year 2011-2014 Chevrolet Express compressed natural gas (CNG)vehicles manufactured September 10, 2010, to April 28, 2014, and GMC Savana CNG vehicles manufactured May 23, 2011, to April 21, 2014. The affected vehicles may leak natural gas from the CNG high pressure regulator.
Risk if Unfixed
A natural gas leak in the presence of an ignition source increases the risk of a fire or explosion.
Free Fix
GM will notify owners, and dealers will replace the high pressure regulator, free of charge. The recall began February 13, 2013. Owners may contact Chevrolet customer service at 1-800-222-1020 or GMC customer service at 1-800-462-8782. GM's number for this recall is 14321.
General Motors LLC (GM) and IMPCO Automotive Division of IMPCO Technologies, Inc. (IMPCO) are recalling certain model year 2011-2013 Chevrolet Express and GMC Savana Cargo vans that have a compressed natural gas (CNG) fuel system installed as original equipment by IMPCO. The fuel systems, manufactured February 14, 2011, through February 20, 2013, have a fuel shut-off solenoid connector to the CNG tank that may corrode and form a short.
Risk if Unfixed
A short at the connector may cause overheating, resulting in an increased risk of fire.
Free Fix
GM will notify owners and GM dealers/fleets will perform the remedy which will include replacing the solenoid assemblies and fuel pump fuses and adjusting the wiring routing. The recall began on August 5, 2013. GM's number for this recall is 13139. Impco's number for this recall is FA13GM001. Owner's may contact GM Fleet Action Center at 1-800-353-3867.
Your vehicle's CNG system has a faulty pressure relief device that might not work properly, which could cause gas to leak into the passenger compartment.
Risk if Unfixed
If this happens, and there's an ignition source, it could lead to an explosion or fire in your vehicle.
Free Fix
You can get this fixed for free at a dealership, where they'll inspect and repair the pressure relief device and vent pipe assembly to ensure your safety.
Show original NHTSA language
Original — What Happened
General Motors is recalling certain model year 2011 Chevrolet Express vehicles converted by Impco Automotive to run compressed natural gas (CNG), manufactured between November 23, 2010 and December 23, 2010 and 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.
Original — Risk if Unfixed
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.
Original — Remedy
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. Owners may contact General Motors at 1-800-521-7300.