Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

1992 Cadillac Seville BaseFACTORY OEM SERVICE PROCEDURE

Note On Intermittents

Manipulate power steering pressure switch connector with engine running. If intermittent is created, code will set. Disconnect and reconnect power steering connector to ensure it is properly latched.

Fig 1: PCM Code E040, Schematic, Opens PSPS Circuit

Courtesy of GENERAL MOTORS CORP.

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:

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