Standard Ignition DS-1557 Door Lock Switch

Door Lock Switch for GM Trucks

Standard Ignition DS-1557 is a door lock switch for power door lock systems in select Chevrolet and GMC trucks. It is built with a female connector, 5 pin terminals, and a male terminal layout to support reliable electrical switching in the vehicle interior.

• Functions: power door locks
• Connector gender: female
• Terminal gender: male
• Terminal quantity: 5
• Terminal type: pin
• Round base application on listed Chevrolet and GMC trucks

Detailed Product Overview

Standard Ignition DS-1557 is engineered for consistent door lock control in 1990-1994 Chevrolet C1500, C2500, C3500, K1500, K2500, and K3500 models, as well as 1990-1994 GMC C1500, C2500, C3500, K1500, K2500, and K3500 models. If you are replacing a worn or intermittent GM truck door lock switch, this part number DS-1557 provides the correct electrical interface for the listed round base applications. Standard Ignition uses copper alloy conductors and tests each part for mechanical and electrical switching performance to support dependable operation.

This part cross-references ACI 87244 and Continental 49240 for the same application.

What It Helps Fix

• Inoperative power door lock switch response
• Intermittent lock or unlock operation
• Electrical contact wear inside the switch
• Broken or unreliable interior door lock control
• Switch replacement needs on GM truck door panels

Installation Notes and Tips

Verify the connector style, terminal count, and round base configuration before installation. Match the vehicle application carefully, especially on 1990-1994 Chevrolet and GMC C/K trucks, to confirm the switch layout aligns with the existing wiring and door panel design. Compare the old switch to DS-1557 before final assembly.

Quality Assurance

Standard Ignition builds this switch with durable materials and conducts 100% testing to verify both mechanical action and electrical switching performance. The design focuses on the demands of professional service work and consistent operation in power door lock systems.