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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) >> Fuel System (Gasoline) >> Fuel Pump Relay (3.4L) >> Diagnostic Aids
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Diagnostic Aids

WARNING: This page does not describe the selected car, but rather 31 other vehicles, including the 2002 Saturn Vue, 2002 Pontiac Montana, 2002 Pontiac Aztek, 2002 Oldsmobile Silhouette, and 2002 Oldsmobile Bravada. However, it is still accessible from the selected car via links, so may be relevant.

Listen for an audible hiss from fuel pump when fuel pump relay is commanded ON. A vibration in fuel feed line when fuel pump relay is commanded ON indicates fuel pump is operating. If condition is intermittent, see INTERMITTENTS in TROUBLE SHOOTING - NO CODES - TRUCKS article.

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