Explore Jeep Grand Cherokee Car Block Heaters & Jeep Grand Cherokee Engine Block Heaters For Sale Purchase Jeep Grand Cherokee Engine Block Heaters Near Me. Maintaining the engine block heater of your Jeep Grand Cherokee is essential for ensuring quick starts in cold weather and preserving engine health. To extend its lifespan, routinely inspect the cord for damage and ensure the plug is dry before connection. Signs that it might be time for a replacement include a heater that fails to warm the engine or a visibly damaged cord. When selecting a new heater, consider frost plug heaters for their direct warmth and easy installation, or oil pan heaters that attach externally. Choose a high-quality, durable material to withstand harsh conditions, and remember to follow the manufacturer's guide for proper installation to maximize efficiency and safety. With the right care and choice, an engine block heater is an invaluable investment for your vehicle's performance in the winter months.