Standard Ignition PSS5 Power Steering Pressure Switch

Power Steering Pressure Switch for GM Applications

Standard Ignition PSS5 is a power steering pressure switch built for vehicles that rely on accurate hydraulic pressure signaling. It uses a screw-in mounting style, a female connector, and male blade terminals to support a direct electrical connection in the steering system.

Compatible With Buick Century, Regal, LeSabre, Park Avenue, Skylark, Reatta, Riviera, Skyhawk, and Roadmaster; Chevrolet Caprice, Impala, Lumina, Monte Carlo, Cavalier, S10, Astro, Celebrity, Corsica, Camaro, Commercial Chassis, and S10 Blazer; Cadillac Commercial Chassis, Fleetwood, Cimarron, and Oldsmobile Cutlass, Cutlass Supreme, Cutlass Ciera, Cutlass Cruiser, Cutlass Calais, Custom Cruiser, Delta 88, 98, Toronado, Firenza, and Calais across the listed model years.

• Screw-in mounting type for a secure pressure port connection
• Female connector with 1 connector interface
• 2 male blade terminals for straightforward electrical hookup
• Black and silver housing finish
• Built with copper alloy conductors for strong electrical conductivity and low resistance
• 100% tested for mechanical and electrical switching performance

This Standard Ignition PSS5 power steering pressure switch monitors steering system pressure and sends the signal needed for proper vehicle operation. It is a direct-fit style replacement for many GM cars and light trucks, including Chevrolet Caprice, Lumina, and S10, as well as Buick Regal and Oldsmobile Cutlass Supreme. This part cross-references 1S6580 and PS106 for the same application.

Common Uses and Symptoms

• Restores pressure-switch signaling in the power steering circuit
• Addresses erratic idle changes tied to steering load
• Helps correct steering-related electrical signal faults
• Supports replacement of a leaking or electrically failed switch
• Useful when diagnosing steering assist pressure input issues

Installation Notes and Tips

Verify the connector style, terminal layout, and screw-in mounting before installation. Clean the pressure port threads and inspect the harness connector for corrosion or damaged terminals. Confirm vehicle application by year, make, and model, especially on GM platforms with shared steering components.

Quality Assurance

Standard Ignition builds this switch with robust materials and copper alloy conductors, then tests each unit for mechanical and electrical switching performance. That process supports consistent operation in service applications.