CUSTOMER CONCERN The engine intermittently will not crank and may stall while driving; DTCs P1682, P0AC4, P069E and P2534 are stored across the ECM, FPFCM and HPCM. CAUSE The confirmed repair identified an intermittent ignition-switch fault that dropped ignition voltage and caused the module low-voltage and communication symptoms. CORRECTION Remove and replace the failed ignition switch, clear P1682, P0AC4, P069E and P2534, and road test to verify the engine no longer stalls

CUSTOMER CONCERN Vehicle intermittently will not crank and may stall while driving with DTCs P1682, P0AC4, P069E, and P2534 stored. CAUSE Confirmed repair results identified an intermittent internal failure of the ignition switch. CORRECTION Remove and replace the ignition switch and verify reliable starting and continued engine operation.