Dorman 924-978 Shift Interlock Solenoid

Reliable Shift Interlock Solenoid for Select GM and Saab Models

The Dorman 924-978 shift interlock solenoid is designed to provide dependable performance for various Buick, Chevrolet, GMC, Hummer, Oldsmobile, and Saab vehicles. Engineered to fit specific models such as the Trailblazer, Envoy, H3, and 9-7x, this solenoid ensures proper shifter assembly operation and safety.

• Compatible with Buick, Chevrolet, GMC, Hummer, Oldsmobile, and Saab vehicles
• Fits models including Trailblazer, Envoy, H3, H3T, 9-7x, Bravada, Rainier, SSR, and more
• Part number 924-978 for precise identification
• Black plastic housing with durable construction
• Rectangular female connector with 5 terminals
• Two 4 mm mounting holes for secure installation
• Mounts directly to the shifter assembly using screws
• Connector quantity: 1, wiring harness not included

Product Features and Specifications

The Dorman 924-978 shift interlock solenoid features a black plastic housing designed for durability and resistance to wear. It includes a single female rectangular connector with five terminals, ensuring reliable electrical connections within the vehicle's transmission system. The solenoid mounts to the shifter assembly using two 4 mm mounting holes and screws, providing a secure fit without included mounting hardware. This part is engineered specifically for select GM and Saab models, making it a precise replacement component for transmission switch and actuator needs.

Purpose and Common Applications

This shift interlock solenoid is essential for controlling the locking mechanism that prevents the gear shifter from moving out of the park position unless the brake pedal is pressed. It addresses several transmission-related issues, including:

• Failure to release the shifter from park
• Intermittent or no response from the shift interlock system
• Electrical connection problems within the shifter assembly
• Malfunctioning solenoid causing transmission safety lock issues
• Wear or damage to the original solenoid in Buick, Chevrolet, GMC, Hummer, Oldsmobile, and Saab vehicles

Installation Notes and Tips

Installation of the Dorman 924-978 shift interlock solenoid requires removal of the shifter assembly to access the mounting location. The solenoid mounts using screws through two 4 mm holes; however, mounting hardware is not included and must be sourced separately. Ensure the female rectangular connector with five terminals is properly aligned and securely connected to the vehicle’s wiring harness. Since the wiring harness is not included, verify compatibility with the existing harness before installation.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards, providing reliable fit and function. The 924-978 shift interlock solenoid undergoes quality control testing to ensure durability and performance in demanding automotive environments. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in material and workmanship. Consult product documentation or the manufacturer for exact warranty terms.