2001 Cadillac DeVille BaseFACTORY OEM SERVICE PROCEDURE

Power Window System: Description

WARNING: Vehicles are equipped with air bag supplemental restraint system. Before attempting ANY repairs involving steering column, instrument panel or related components, see SERVICE PRECAUTIONS and DISABLING & ACTIVATING AIR BAG SYSTEM in appropriate AIR BAG RESTRAINT SYSTEMS article.

A permanent-magnet motor operates each power window. Each motor raises and lowers window when voltage is supplied by door module. Motor direction depends on polarity of supply voltage. Switches control supply voltage polarity.

Following components are used to control power windows:

  • Driver Door Module (DDM).
  • Passenger Front Door Module (PDM).
  • Left Rear Door Module (LRDM).
  • Right Rear Door Module (RRDM).
  • Driver Door Switch Assembly (DDSA).
  • Right front power window switch.
  • Left rear power window switch.
  • Right rear power window switch.
  • Left front power window motor.
  • Right front power window motor.
  • Left rear power window motor.
  • Right rear power window motor.
  • Class 2 serial data link.
  • PWR WDO circuit breaker.

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.