Cutlass Ciera L4-2.2L VIN 4 (1995)
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Rollover Valve: Description and Operation
The roll-over valve is pressed into the Evaporative Emissions (EVAP) pipe of the fuel sender assembly and is not serviced separately. The roll-over
valve prevents fuel from entering the engine compartment if the vehicle rolls over by shutting "OFF" the EVAP pipe to the evaporative emission
canister.