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Home >> GMC >> 2002 >> Jimmy 2D Utility, Part Time, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 127 (Engine Controls - System & Component Testing) >> Emission Systems & Sub-Systems (Diesel) >> Exhaust Gas RECIRCULATION >> EGR Valve Check

EGR Valve Check

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With engine off, disconnect vacuum hose to EGR valve. Connect vacuum pump to EGR and apply 10 in. Hg. vacuum. EGR diaphragm should move up and stay up for at least 20 seconds. If EGR does not operate as specified, replace EGR valve.

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