Tools and Materials Needed:
- Replacement Radiator (OEM or compatible aftermarket radiator)
- Coolant (Correct type and quantity for your vehicle)
- Funnel for filling the coolant system
- Screwdriver
- Wrench set (multiple sizes)
- Pliers
- Safety goggles
- Gloves
- Drain pan
- Rags
Instructions:
1. Preparation:
- Park your Pontiac Montana on a level surface, engage the parking brake, and turn off the engine. Allow the engine and coolant to cool down completely before proceeding.
2. Drain the Coolant:
- Open the hood and locate the radiator cap. Remove the cap to relieve pressure in the cooling system.
- Locate the drain plug at the bottom of the radiator. Place a drain pan beneath the drain plug. Use a wrench to loosen and remove the drain plug, allowing the coolant to drain completely into the drain pan.
3. Disconnect Hoses and Wiring:
- Using a screwdriver, remove the hose clamps that connect the upper and lower radiator hoses to the radiator. Disconnect both hoses by gently pulling them off the radiator.
- If there are any electrical connectors attached to the radiator, carefully detach them by pressing the release tabs or clips on the connectors.
4. Remove the Radiator:
- Locate and remove the bolts, nuts, or brackets securing the radiator in place. You might need to unbolt the radiator support at the top as well. Be cautious not to drop any hardware into the engine compartment.
- Once all the fastenings are removed, lift and remove the radiator from the vehicle.
Note: When lifting the radiator, take precautions not to spill or splash any residual coolant. It's a good idea to place a large piece of cardboard or a drip pan beneath the radiator's location.
5. Install the New Radiator:
- Position the new radiator in the engine compartment, aligning it with the mounting brackets.
- Fasten the radiator securely back in place using the removed bolts, nuts, or brackets.
6. Reconnect Hoses and Wiring:
- Reinstall the upper and lower radiator hoses, and secure them with the hose clamps.
- Reconnect any electrical connectors that you detached earlier.
7. Refill the Coolant:
- Use a funnel to pour the correct amount and type of coolant into the radiator. Refer to your vehicle's owner's manual for the recommended type and quantity of coolant.
- Fill until the coolant reaches the "Full" mark on the radiator's reservoir.
8. Test the System:
- Replace the radiator cap and close the hood.
- Start the vehicle and let it run, checking for any potential leaks.
- Turn on the heater to ensure proper circulation through the cooling system.
Note: If you encounter difficulties or have hesitation due to the complexity of the task, it's always advisable to consider having the radiator replaced by a qualified mechanic or technician to avoid any potential mistakes.
