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Home >> GMC >> 2006 >> Sierra 1500 HD, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1149 (Engine Controls And Fuel - 3.6L - DTC P0496 To DTC P2235) >> DTC P0627, P0628, or P0629 >> Diagnostic Fault Information

Diagnostic Fault Information

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.
Circuit Short to Ground Open/High Resistance Short to Voltage Signal Performance
Battery Voltage - Relay Switch 1 2 - -
Fuel Pump Supply Voltage 1 2 3 -
Fuel Pump Relay Control P0628 P0627 P0629 -
Fuel Pump Ground - P0627 - -
  1. The fuel pump fuse opens and the engine cranks but does not run.
  2. The engine cranks but does not run.
  3. The fuel pump operates continuously and the battery will discharge.
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