1. Function: Reliable Ignition & Enhanced Performance
The diesel glow plug controller ensures smooth cold starts by intelligently adjusting preheat time based on ambient temperature and engine conditions. It maintains optimal combustion efficiency, reduces emissions, and features real-time diagnostics to prevent overheating and voltage overload—extending engine life and reliability.
2. Premium Materials: Built to Last
Crafted with heat-resistant components and a durable, humidity-proof casing, this module withstands harsh environments. High-quality insulation ensures stable performance in extreme temperatures, delivering long-lasting durability and consistent operation.
3. Fitment: Perfect Compatibility
Direct replacement for Chevrolet Silverado 2500/3500 (2001–2005), for GMC Sierra 2500/3500 (2001–2005), for Chevrolet Tahoe (2005), and for Cadillac Escalade (2005). Replacement part numbers: RY-1556, RY1556, 97304030, 97379635.
4. Critical Pre-Installation Check
Important: Before installation, measure all glow plug resistances (4/6/8 cylinders as applicable). All values must be identical or very close. Replace any faulty glow plug to avoid module damage or harness overheating due to imbalanced current.
5. Module Installation & Testing
After installation, start the engine and monitor for 3–10 minutes. Check the connector harness for overheating signs. Properly matched glow plugs ensure safe operation, while mismatched parts risk doubled current and potential failure.
6. Note
This part is not original parts, the mention of brand names and any related model designation above is only for purposes of demonstrating compatibility.
NO installation instruction and recommend professional installation.