2002 Cadillac Seville SLSFACTORY OEM SERVICE PROCEDURE

Charging DTCS

CHARGING DIAGNOSTIC TROUBLE CODE (DTC) LIST

DTC Description
DTC B1327 BATTERY/SOURCE VOLTAGE - LOW
DTC B1328 BATTERY/SOURCE VOLTAGE - HIGH
DTC B1513 CHARGING SYSTEM VOLTAGE OUT-OF-RANGE - LOW
DTC B1514 CHARGING SYSTEM VOLTAGE OUT-OF-RANGE - HIGH
DTC P0560 SYSTEM VOLTAGE OUT-OF-RANGE
DTC P0562 SYSTEM VOLTAGE - LOW
DTC P0563 SYSTEM VOLTAGE - HIGH
DTC P0621 GENERATOR L-TERMINAL CIRCUIT
DTC P0622 GENERATOR F-TERMINAL CIRCUIT
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.