2001 Cadillac DeVille BaseFACTORY OEM SERVICE PROCEDURE

Cruise Control DTCS

CRUISE CONTROL DIAGNOSTIC TROUBLE CODE (DTC) LIST

DTC Description
DTC P0574 Powertrain Control Module Detects High Vehicle Speed
DTC P1554 Powertrain Control Module Detects Cruise Engaged Signal
DTC P1560 Cruise Control Engaged With Vehicle In Neutral Or Park
DTC P1564 Powertrain Control Module Detects Rapid Acceleration
DTC P1566 Powertrain Control Module Detects High Engine Speed
DTC P1567 Traction Control System Applied Brakes
DTC P1570 Traction Control Active Cruise Disabled
DTC P1574 Stoplight Switch Circuit
DTC P1585 Cruise Control Inhibit Output 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.