Home >> Cadillac >> 2012 >> Escalade EXT >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Controls/Fuel - 5.3L, 6.0L, 6.2L - DTC P0420 To DTC P3449 And Diagnostic Information And Procedures >> Diagnostic Information and Procedures >> DTC P2635 (Fuel Pump Control Module) >> DTC Descriptor