This bulletin applies to 2010-2014 Chevy Camaro models. The customer may comment about an intermittent pop or multiple popping noises from the rear of the vehicle (this may occur shortly after a cold start or EVAP purge event).
The cause for this concern is the auxiliary fuel module in the left side of the fuel tank changing height (spring loaded leg) as the fuel tank collapses slightly. Replace the auxiliary fuel module with a newly-designed part.
The new module is available as part number 13592089 (sender kit, fuel).