1. Identify the Leak:
* Locate the leak precisely. Is it a hose, a metal pipe, a connection, or a clamp? Take pictures if possible.
* Assess the damage. Is it a small crack, a hole, a perished hose, or a corroded pipe?
2. Gather Supplies (depending on the type of repair):
* For a rubber hose leak (small crack or hole):
* Coolant: Use the correct type specified in your owner's manual. Mixing types can cause problems.
* Hose clamps: Make sure they're the correct size for your hose.
* Repair sleeve/hose clamp: These are flexible clamps that go over the damaged area and provide reinforcement.
* Duct tape (temporary fix ONLY): Use this ONLY as a temporary measure until you can get a proper repair. It's not a long-term solution.
* Shop rags or paper towels: To clean up spills.
* For a rubber hose replacement:
* New hose: Get a hose of the correct length, diameter, and construction (reinforced, etc.) from an auto parts store. Provide them with your vehicle's year, make, and model.
* Hose clamps: The correct size and type for your new hose.
* Coolant: The correct type.
* Shop rags or paper towels: To clean up spills.
* For a metal pipe leak (rare and more complex):
* Welding equipment (if you're experienced): This requires significant skill. Improper welding can lead to further damage and safety hazards.
* Replacement pipe (usually requires professional help): This is often the best and safest option.
* Coolant: The correct type.
* Shop rags or paper towels: To clean up spills.
* Tools:
* Socket wrench set: To remove hose clamps.
* Screwdrivers (possibly): Some hoses may require removing other parts to access them.
* Gloves: To protect your hands from coolant and hot metal.
* Safety glasses: To protect your eyes.
3. Repair Methods:
* Small crack/hole in a rubber hose (temporary): Clean the area thoroughly. Apply a repair sleeve or wrap the damaged area tightly with duct tape (temporary). Reconnect the hose and clamp it securely. This is a temporary solution – replace the hose as soon as possible.
* Rubber hose replacement: Loosen the hose clamps on both ends of the damaged hose. Carefully remove the old hose. Install the new hose, ensuring it's properly seated. Securely tighten the hose clamps.
* Metal pipe repair/replacement: This is a difficult repair and typically requires professional help or welding experience. A small leak *might* be temporarily sealed with a specialized metal repair compound, but this is usually not a long-term fix. It's best to consult a mechanic for a metal pipe leak.
4. Refilling the Coolant:
* After making the repair, carefully refill the coolant reservoir with the correct type of coolant. Consult your owner's manual for the correct type and capacity.
* Check for leaks. Run the engine for a short time, then inspect for leaks. Let the engine cool completely before checking again. Look for any signs of coolant dripping or pooling.
* Bleed the cooling system (if necessary): This removes air bubbles that can hinder efficient cooling. Refer to your owner's manual for instructions on bleeding your specific vehicle's cooling system.
Important Considerations:
* If you are not comfortable performing this repair yourself, take your Tahoe to a qualified mechanic. Improper repair can lead to engine damage or serious injury.
* Always allow the engine to cool completely before working on the cooling system.
* Dispose of used coolant properly. It's toxic and harmful to the environment. Check with your local waste management facility for proper disposal instructions.
This information is for general guidance only. Consult your vehicle's owner's manual and a qualified mechanic for specific instructions and safety procedures. Improper repair can lead to engine damage or personal injury.
