Adding engine coolant to a buick rendevous

Hello. To 'bleed' your Buick's coolant system, open the 'bleeder valve' then start engine. Let engine 'warm' to operating temperature. Add coolant/water to reservoir tank if needed as system 'bleeds'. As coolant 'bleeds', 'forcefully' out of 'bleeder valve'; close and tighten it AND keep coolant/water level at FULL/HOT. Good luck and keep me informed; if you want to.

Question edited for clarity.

Everything here is FREE Jesse! Here is a tip I wrote. It is called burping the cooling system. Basically, you just take the radiator cap off, turn the heating on full and keep topping the radiator up as the temperature comes up to normal. It must be done from the radiator cap and not the expansion tank. There are lots of videos on YouTube.

https://www.fixya.com/cars/r26222313-engine_overheating_even_after_changed

These are videos specific to your vehicle.

https://www.google.com/search?q=buick+lacrosse+replace+coolant

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Refilling Procedure




Notice: When adding coolant, it is important that you use GM Goodwrench DEX-COOL?"¢ coolant. If coolant other than DEX-COOL?"¢ is added to the system, the engine coolant will require change sooner: at 50 000 km (30,000 miles) or 24 months.

1. Close the radiator drain cock.



2. If previously removed, install the engine block drain plugs.


When installing the drain plugs, use pipe sealer GM P/N 12346004.




Important: On vehicles equipped with the 3.4L engine, open the coolant air bleed valve. The coolant air bleed valve is located on the top of the thermostat bypass pipe/heater pipe assembly. Close the valve once a continuous stream of coolant is expelled from the valve.




3. Fill the surge tank to the base of the filler neck.



4. Start the engine with the pressure cap off. Run the engine until the upper radiator hose starts to get hot.



5. If the coolant level in the surge tank is low, add the proper mix of coolant until the level reaches the full cold line.



Important: After servicing the cooling system, and if the vehicle is equipped with an intermittent low coolant light, an occasional low coolant light may be encountered during some extreme driving maneuvers. This complaint should be eliminated by removing the surge tank cap and adding coolant to a level just at or above the full cold line when the system is cold.




6. Install the cap onto the tank with hand tight pressure.

Recycling Procedure




Important: Dispose of used coolant in a proper fashion, such as in a used coolant holding tank. Never pour used coolant down the drain. Ethylene glycol antifreeze is a very toxic chemical. Disposing of ethylene glycol antifreeze into the sewer system is both illegal and ecologically unsound.



There is currently no approved method for recycling used DEX-COOL?"¢ coolant into new DEX-COOL?"¢ coolant. DEX-COOL?"¢ coolant can be recycled into new conventional coolant. Consult local listings for coolant recycling facilities in your area.

Look for an air bleed valve, high on the block or head, often right on the thermostat housing. Such a valve if equipped, will be at the highest point of the coolant passages in the engine, used to bleed air from the engine coolant. When you are filling the radiator, the valve should be opened. On a Buick there is a center screw in the valve that just comes out and laid aside until coolant level reaches that point. As you fill the radiator, you are also filling the coolant passages in the engine. When the radiator is close to full, you will see coolant start coming out of the bleed valve. That is when you close the valve, you have bled the air out of the engine coolant, and you can now continue filling the radiator.

Could be in the engine.

What engine 2.2 or 2.4 ?
Important: On vehicles equipped with the 2.4L engine, open the coolant air bleed valve. The coolant air bleed valve is located on the top of the thermostat bypass pipe/heater pipe assembly. Close the valve once a continuous stream of coolant is expelled from the valve.
Does the cooling fan come on ?
Notice: When adding coolant, it is important that you use GM Goodwrench DEX-COOL™ coolant. If coolant other than DEX-COOL™ is added to the system, the engine coolant will require change sooner: at 50 000 km (30,000 miles) or 24 months.
Close the radiator drain ****. Remove the drain hose.
If previously removed, install the engine block drain plugs.
When installing the drain plugs, use pipe sealer GM P/N 12346004.
Important: On vehicles equipped with the 2.4L engine, open the coolant air bleed valve. The coolant air bleed valve is located on the top of the thermostat bypass pipe/heater pipe assembly. Close the valve once a continuous stream of coolant is expelled from the valve.
Fill the surge tank to the base of the filler neck.
Start the engine with the pressure cap off. Let the engine run until the upper radiator hose starts to get hot.
If the coolant level in the surge tank is low, add the proper mix of coolant until the level reaches the full cold line.
Important: After servicing the cooling system, and if the vehicle is equipped with an intermittent low coolant light, an occasional low coolant light may be encountered during some extreme driving maneuvers. This complaint should be eliminated by removing the surge tank cap and adding coolant to a level just at or above the full cold line when the system is cold.
Install the cap onto the tank with hand tight pressure.

If its a 3.4 or 3.1 liter the water pump is right in the front. Remove the serp belt, remove the four bolts that hold the pulley to the pump, remove the five/six bolts that hold the pump to the timing cover housing. remove the pump. Pay close attention to the orientation of the pump. It only goes on one way. Any other way and the bolt holes will not line up.

Clean the mating surface of all the gasket meterial, install the new pump, pulley, serpentine belt. Fill with coolant. Open the bleeder valves on the water pump bypass pipe and/or the t-stat housing if equipped. Close them when steady coolant comes out. Periodically check them to remove any air pocket that may occur while running the engine. Failure to bleed properly will cause the engine to overheat!!!

After is has run for 20 - 30 minutes and the fans have come on and there is no more air burping out of the radiator replace the radiator cap.

I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa

Install the new thermostat (make sure it is the right temp). This will allow for your coolant to stay long enough in the radiator to cool down.

If that does not fix it, check radiator cap, belt that turns the water pump and the water pump itself along with its pulley.

There is also the possibility that the coolant temperature sensor is giving off false readings, that the coolant system is clogged or your engine fan is not operating when it should be.

You most likely have air in the system. These things can be a royal pain to get the air bleed out of the system.
Look back next to the brake booster and you will see a rubber tube with a screw cap in the end of it(this is the heater bleed), also on the front of the intake area you will see a black tube with an allen sloted cap.
Remove the slotted cap and screw the screw cc on the rubber tube. Add coolant to the coolant jug allowing the system to equalize until no more coolant can be added. Add as much coolant as possible to the engine fill( the sloted cap near intake). The heater air bleed will remain open.Replace the engine fill cap.Start the engine and turn the heater to MAX position.Close the heater air bleed when a steady stream of coolant comes from it, during engine idle. Allow the engine to idle for five minutes, add coolant to the degas bottle as needed to maintain the cold fill MAX mark.Reopen the heater air bleed to release any entrapped air and close again. Maintain engine speed of 2,000 rpm for 3-5 minutes or until hot air comes from the heater.Return to idle and verify hot air is still coming from the heater. Set the heater temperature setting to 75° F and allow the vehicle to idle for two minutes.Shut the engine off and allow to cool.After the engine has cooled, add coolant to the degas bottle to bring the level to the cold fill MAX mark. This should have the air out of the system.

try adding it via the reservoir. make sure you have a 50/50 mix of water and antifreeze. If you want to cheat, cheat on the side of more antifreeze than water. Look for a leak in the hoses and water pump to find out if she has a larger problem that is causing the loss of coolant. look for drips under the car.