Standard Ignition DS-374 Instrument Panel Dimmer Switch

Instrument Panel Dimmer Switch for GM Trucks and SUVs

Standard Ignition DS-374 is an OE replacement instrument panel dimmer switch for select Chevrolet and GMC trucks and SUVs from 1988-1991. It is built with a snap-fit mounting design, a female connector, and 4 blade terminals for direct electrical replacement in the dash lighting circuit.

Key Features

• OE replacement instrument panel dimmer switch
• Push up/down switch actuation style
• Female connector with 1 flat connector shape
• 4 male blade terminals for electrical connection
• Plastic switch body with snap-fit mounting type
• Not lighted and no lever included
• Copper alloy conductors for strong electrical conductivity and low resistive loss
• 100% tested for mechanical and electrical switching performance

Detailed Description

The Standard Ignition DS-374 is designed for vehicles that need a direct replacement for the instrument panel dimmer switch. It serves the dash lighting control function with push up/down operation and OE-style fitment, making it a practical choice for restoring interior light adjustment on Chevrolet Blazer, Chevrolet C/K trucks, GMC C/K trucks, and GMC Jimmy applications. Standard Ignition uses robust materials and copper alloy conductors to support consistent electrical transfer and dependable switching action.

This part cross-references Standard Ignition DS525 and S7227 for the same application.

What It Helps Fix

• Inoperative dash light dimming control
• Intermittent interior lighting adjustment
• Broken or worn switch actuation
• Electrical switching issues at the instrument panel
• Fitment problems caused by a damaged OE-style dimmer switch

Installation Notes and Tips

Compatible With 1988-1991 GMC Jimmy, N/A; 1988-1989 Chevrolet Blazer, N/A; 1988-1989 Chevrolet C1500, N/A; 1988-1989 Chevrolet C2500, N/A; 1988-1989 Chevrolet C3500, N/A; 1988-1989 Chevrolet K1500, N/A; 1988-1989 Chevrolet K2500, N/A; 1988-1989 Chevrolet K3500, N/A; 1989 Chevrolet R2500, N/A; 1989 Chevrolet R3500, N/A; 1989 Chevrolet V3500, N/A; 1988-1989 GMC C1500, N/A; 1988-1989 GMC C2500, N/A; 1988-1989 GMC C3500, N/A; 1988-1989 GMC K1500, N/A; 1988-1989 GMC K2500, N/A; 1988-1989 GMC K3500, N/A; 1988 Chevrolet R20, N/A; 1988 Chevrolet R30, N/A; 1988 Chevrolet V30, N/A.

Verify connector style, terminal count, and mounting style before installation. This switch uses a snap-fit mount and a 4-blade terminal layout, so matching the original dash connector is important for proper operation.

Quality Assurance

Standard Ignition states that this switch is 100% tested to verify both mechanical and electrical switching performance. The design also uses copper alloy conductors and service-grade materials to meet the demands of professional repair work.