1988 Cadillac Seville BaseFACTORY OEM SERVICE PROCEDURE

Notes on Intermittents

The Amber cruise "ON" indicator can be used to monitor cruise control switch status. Turn cruise control switch on and manipulate wiring and connectors. If switch or circuit from fuse to switch are open, the Amber indicator light will go out.

If the cruise control 3-amp fuse blows intermittently, turn cruise control switch on, manipulate wiring, connectors, and cruise control/steering column switch. If circuit becomes grounded, the fuse will blow.

Fig 1: ECM Input Code EI79, Cruise Control Enable On/Off Input
G57364
Factory Service Tools

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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.