1997 Cadillac DeVille BaseFACTORY OEM SERVICE PROCEDURE

PZM Input Codes

PZM input selection provides testing of inputs to PZM. Input status is shown on display as HI or LO. Input test status is shown as "0" until PZM sees a transition in state of switch; status then changes from "0" to "X", indicating test has been passed.

Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

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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.

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