GMC TSB #PIT5723A
2020 GMC Sierra 1500
Affected Component: FUEL SYSTEM, GASOLINE:STORAGE:EVAPORATIVE EMISSIONS:CANISTER
- Summary
- This Preliminary information communicates information that the EVAP purge pump may be filling with liquid fuel if the customer overfills the fuel tank by over 3 clicks of a normal filler nozzle.   Reference N202324990: Special Coverage - Evaporative Emissions Purge Pump for repair information