Affects 2011-2014 Chevrolet Express and GMC Savana Vans
With High Pressure GFI Regulators and DiaCom Diaphragms
General Motors has initialed a safety recall of 3,196 model year 2011-2014 Chevrolet Express and GMC Savana Vans converted to dedicated compressed natural gas operation by Impco Automotive.
“Some of these vehicles may have a CNG high pressure regulator that leaks natural gas,” GM told dealers last month. “This could cause an explosion or a fire if an ignition source is present.
“To correct this condition, dealers are to replace the regulator.”
GM and Impco began looking into the matter in March after learning from a fleet customer that a leaking regulator had been replaced on a CNG van in January.
30 Leaks Identified
“By the end of May 2014, GM had identified 30 cases of regulator leaks,” the company told NHTSA, the National Highway Traffic Safety Administration, last month. GM said it “continued to analyze parts returned from the field and found 17 cases that could not be attributed to [last year’s] regulator solenoid recall replacement” (F&F, June 4, 2013).
“These leaks were attributed to three additional conditions related to assembly of the regulator, machining of the regulator, and manufacturing of the internal diaphragm assembly,” GM field product investigations and evaluations director Brian Latouf told the agency.
He said that the regulator was manufactured by GFI Control Systems of Kitchener, Ont. and the regulator diaphragm by DiaCom, of Amherst, N.H.
The GM assigned recall number is 14321.
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Source: NHTSA with Fleets & Fuels follow-up