2006 GMC Envoy P0455 EVAP Large Leak

2006 GMC Envoy P0455 EVAP Large Leak

GMC Envoy On the 2006 GMC Envoy, the P0455 is a very general code that simply states there is a large leak in the EVAP (emissions control/recovery) System. First place to start here is with the fuel cap. Check the underside of the fuel cap for any cracks or signs of defects that may keep the cap from sealing correctly. If there are any doubts about the inspection of the cap, replace it. Keep in mind, you will need a cap that meets OE Specs. Those “universal” or “locking” fuel caps…

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