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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1137 (Engine Controls And Fuel - 3.6L - Introduction (2 Of 2)) >> Description and Operation >> Fuel System Description (w/LLT) >> Fuel Pump Relay

Fuel Pump Relay

WARNING: This page is about a different car, the 2008 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.

The fuel pump relay allows the ECM to energize the fuel pump. The ECM supplies B+ to the fuel pump relay which enables the fuel pump whenever the crankshaft position (CKP) sensor pulses are detected.

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