Dorman 924-435 Neutral Safety Switch

Neutral Safety Switch for GM Applications

Dorman 924-435 is a neutral safety switch built to match the fit and function of the original equipment part on specified vehicles. It helps communicate gear position to the PCM or ignition circuit so the vehicle can allow or prevent starting. This replacement is a direct-fit option for many Chevrolet, GMC, Cadillac, Hummer, and Oldsmobile models.

• Electric power source
• External switch mounting type
• 2 connectors
• 5 blade terminals
• Female connector and male terminal design
• No hardware included

Fitment Coverage

• Fits 2003 Cadillac Escalade, N/A, to 7/28/03
• Fits 2002 Cadillac Escalade, N/A
• Fits 1999-2000 Cadillac Escalade, N/A
• Fits 2003 Chevrolet Astro, N/A, to 7/28/03
• Fits 1996-2002 Chevrolet Astro, N/A
• Fits 2003 Chevrolet Avalanche 1500, N/A, to 7/28/03
• Fits 2002 Chevrolet Avalanche 1500, N/A
• Fits 2003 Chevrolet Avalanche 2500, N/A, to 7/28/03
• Fits 2002 Chevrolet Avalanche 2500, N/A
• Fits 2003 Chevrolet Blazer, N/A, to 7/28/03
• Fits 1995-2002 Chevrolet Blazer, N/A
• Fits 2003 Chevrolet Corvette, N/A, to 7/28/03
• Fits 1997-2002 Chevrolet Corvette, N/A
• Fits 2003 Chevrolet Express 1500, N/A, to 7/28/03
• Fits 1996-2002 Chevrolet Express 1500, N/A
• Fits 2003 Chevrolet Express 2500, N/A, to 7/28/03
• Fits 1996-2002 Chevrolet Express 2500, N/A
• Fits 2003 Chevrolet Express 3500, N/A, to 7/28/03
• Fits 1996-2002 Chevrolet Express 3500, N/A
• Fits 2003 Chevrolet S10, N/A, to 7/28/03
• Fits 1995-2002 Chevrolet S10, N/A
• Fits 2003 Chevrolet Silverado 1500, N/A, to 7/28/03
• Fits 1999-2002 Chevrolet Silverado 1500, N/A
• Fits 2003 Chevrolet Silverado 1500 HD, N/A, to 7/28/03
• Fits 2001-2002 Chevrolet Silverado 1500 HD, N/A
• Fits 2003 Chevrolet Silverado 2500, N/A, to 7/28/03
• Fits 1999-2002 Chevrolet Silverado 2500, N/A
• Fits 2003 Chevrolet Silverado 2500 HD, N/A, to 7/28/03
• Fits 2001-2002 Chevrolet Silverado 2500 HD, N/A
• Fits 2003 Chevrolet Silverado 3500, N/A, to 7/28/03
• Fits 2001-2002 Chevrolet Silverado 3500, N/A
• Fits 2003 Chevrolet Suburban 1500, N/A, to 7/28/03
• Fits 1995-2002 Chevrolet Suburban 1500, N/A
• Fits 2003 Chevrolet Suburban 2500, N/A, to 7/28/03
• Fits 2000-2002 Chevrolet Suburban 2500, N/A
• Fits 2003 Chevrolet Tahoe, N/A, to 7/28/03
• Fits 1995-2002 Chevrolet Tahoe, N/A
• Fits 2003 Chevrolet Trailblazer, N/A, to 7/28/03
• Fits 2002 Chevrolet Trailblazer, N/A
• Fits 2003 Chevrolet Trailblazer EXT, N/A, to 7/28/03
• Fits 2002 Chevrolet Trailblazer EXT, N/A
• Fits 2003 GMC Envoy, N/A, to 7/28/03
• Fits 2002 GMC Envoy, N/A
• Fits 2003 GMC Envoy XL, N/A, to 7/28/03
• Fits 2002 GMC Envoy XL, N/A
• Fits 2003 GMC Safari, N/A, to 7/28/03
• Fits 1996-2002 GMC Safari, N/A
• Fits 2003 GMC Savana 1500, N/A, to 7/28/03
• Fits 1996-2002 GMC Savana 1500, N/A
• Fits 2003 GMC Savana 2500, N/A, to 7/28/03
• Fits 1996-2002 GMC Savana 2500, N/A
• Fits 2003 GMC Savana 3500, N/A, to 7/28/03
• Fits 1996-2002 GMC Savana 3500, N/A
• Fits 2003 GMC Sierra 1500, N/A, to 7/28/03
• Fits 1999-2002 GMC Sierra 1500, N/A
• Fits 2003 GMC Sierra 1500 HD, N/A, to 7/28/03
• Fits 2001-2002 GMC Sierra 1500 HD, N/A
• Fits 2003 GMC Sierra 2500, N/A, to 7/28/03
• Fits 1999-2002 GMC Sierra 2500, N/A
• Fits 2003 GMC Sierra 2500 HD, N/A, to 7/28/03
• Fits 2001-2002 GMC Sierra 2500 HD, N/A
• Fits 2003 GMC Sierra 3500, N/A, to 7/28/03
• Fits 2001-2002 GMC Sierra 3500, N/A
• Fits 2003 GMC Sonoma, N/A, to 7/28/03
• Fits 1995-2002 GMC Sonoma, N/A
• Fits 2003 GMC Yukon, N/A, to 7/28/03
• Fits 1995-2002 GMC Yukon, N/A
• Fits 2003 GMC Yukon XL 1500, N/A, to 7/28/03
• Fits 2000-2002 GMC Yukon XL 1500, N/A
• Fits 2003 GMC Yukon XL 2500, N/A, to 7/28/03
• Fits 2000-2002 GMC Yukon XL 2500, N/A
• Fits 2003 Hummer H2, N/A, to 7/28/03
• Fits 2003 Oldsmobile Bravada, N/A, to 7/28/03
• Fits 1996-2002 Oldsmobile Bravada, N/A
• Fits 1995-2001 GMC Jimmy, N/A
• Fits 1995-2000 Chevrolet C2500, N/A
• Fits 1995-2000 Chevrolet C3500, N/A
• Fits 1995-2000 Chevrolet K2500, N/A
• Fits 1995-2000 Chevrolet K3500, N/A
• Fits 1995-2000 GMC C2500, N/A
• Fits 1995-2000 GMC C3500, N/A
• Fits 1995-2000 GMC K2500, N/A
• Fits 1995-2000 GMC K3500, N/A
• Fits 1995-1999 Chevrolet C1500, N/A
• Fits 1995-1999 Chevrolet K1500, N/A
• Fits 1996-1999 Chevrolet P30, N/A
• Fits 1999 Chevrolet Silverado, N/A
• Fits 1995-1999 GMC C1500, N/A
• Fits 1995-1999 GMC K1500, N/A

Common Problems This Part Can Address

• No-start condition when the transmission is not recognized in Park or Neutral
• Starter engagement issues tied to gear-position signal loss
• Intermittent ignition enable problems
• Incorrect PCM input from a worn or failed neutral safety switch
• Gear-position communication faults on Chevrolet Silverado and GMC Sierra applications

Installation Notes

Verify connector style, terminal count, and mounting location before installation. This Dorman 924-435 neutral safety switch uses an external mounting design with two female connectors and five blade terminals, so matching the original configuration is important for proper operation. For GM truck, SUV, and van applications such as Chevrolet Tahoe, GMC Yukon, and Chevrolet Silverado, confirm the vehicle build date where noted.

This part cross-references Dorman 924-435 for the same application.

Quality Assurance

Dorman designs this replacement to match original equipment fit and function on specified vehicles, helping restore the gear-position signal needed for starting system operation.