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Home >> GMC >> 2008 >> Envoy 4.2 S, RWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System & Fuel System - 4.2L - DTC P0366 To DTC P2444 >> DTC P0411 >> Component Testing >> Pump >> Notes

Component Testing: Pump: Notes

Connect the AIR pump to fused battery voltage and ground and observe pressurized airflow at the pump outlet.

If pressurized airflow is not observed, replace the pump.

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