RY-1556 Diesel Glow Plug Controller Fit for Chevrolet Silverado 2500/3500 2001-2005, for GMC Sierra 2500/3500 2001-2005, for Cadillac Escalade/Chevrolet Tahoe 2005, Replace# RY1556 97304030 97379635

Features

• Fitment: This diesel glow plug controller will fit for Chevrolet Silverado 2500 2001-2005, for Chevrolet Silverado 3500 2004-2005, for GMC Sierra 2500 2001-2004, for GMC Sierra 3500 2004-2005, for Chevrolet Tahoe 2005, for Cadillac Escalade 2005. Replace Part Number: RY-1556 RY1556 97304030 97379635.
• Important Notice: For proper installation, always measure the resistance of all glow plugs (4-cylinder: 4 plugs, 6-cylinder: 6 plugs, 8-cylinder: 8 plugs). Resistance values should be close or identical for all plugs. If any glow plug shows a different resistance, it must be replaced to avoid malfunctions when installing the glow plug control module.
• Premium Materials: The diesel glow plug module controller is crafted with heat-resistant materials to ensure stable performance in high-temperature environments. Its durable casing extends lifespan by withstanding humidity and harsh conditions. Inside, high-quality insulating components enhance operational efficiency and reliability.
• Function: The diesel glow plug module controller controls preheat time based on ambient temperature and engine status for smooth startup. Whether you're starting your vehicle in cold weather or after a long period of parking, this module provide the necessary support for a reliable ignitions. It maintains optimal temperature to improve combustion efficiency and reduce emissions, with real-time diagnostics and protection to prevent overheating and voltage overload, extending engine life.
• Module Installation & Testing: After installation, start the vehicle and observe for 3-10 minutes to ensure no glow plugs are damaged or short-circuited. Check the module's connector harness for signs of overheating. If an incorrect glow plug is installed (resulting in differing resistance values), the current will double, potentially causing the original wiring harness to overheat and burn.