Question about 2003 Chevrolet Malibu

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I put water in for coolant about 6 times until I could afford the dex-cool my car ran hot late last night while I was away from home. I had to put more water in to make it home, the car started making noises however I did make it home. The car is still making noises today when I crank up. Could I have messed up the engine?

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That particular car is known for coolant leaks in the intake manifold gasket. If you are dumping water or coolant in it regularly, you have a problem beyond type of coolant. I would have a good shop take a look at it before you spend any more money on anti-freeze, be it orange or green.

Posted on Nov 14, 2010

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Diagram for cooling system bleeder valve 02 deville


There isn't one !
Filling Procedure
Notice: Do not add cold water to the cooling system with the engine at or above operating temperature. Adding cold water causes rapid cooling, resulting in possible engine damage.
NOTICE: When adding coolant, it is important that you use GM Goodwrench DEX-COOL® or HAVOLINE® DEX-COOL® coolant. If Coolant other than DEX-COOL® or HAVOLINE® DEX-COOL® is added to the system the engine coolant will require change sooner; at 50 000 km (30,000 mi) or 24 months.
Notice: Do not use a solution stronger than 70 percent antifreeze. Pure antifreeze can freeze at -22°C (-8°F).
Important: This engine is not equipped with block drains, 2.5 L (2 qt) of residual coolant remains in the engine block.
Refill the cooling system. In order to ensure sufficient engine cooling, freezing and corrosion protection, maintain the protection level at -37°C (-34°F) or lower.
Start the engine.
Place the heater and A/C control in any A/C mode except Max and the temperature in the highest setting.
Allow the engine to continue idling until the lower radiator to water pump hose is hot.
Turn OFF the engine.
Allow the engine to cool to outside temperature. Ensure the coolant level in the surge tank is at the proper level (1).

Nov 19, 2016 | 2002 Cadillac Deville

5 Answers

My car is overheating. What is going on


Have you checked the thermostat? Run the car until the gauge shows normal temp and carefully check the upper radiator hose. If it isnt hot and if you can easily squeeze it the thermostat isnt opening to let water flow to the radiator. If it's opening, check to see if the fan is coming on. If that's not running, check the voltage at the fan, then the fan relay. If you aren't getting power at either of those places it could be your temp sensor.

Dec 02, 2014 | 1998 Chevrolet Cavalier

1 Answer

After replacing my radiator, water pump and thermostat ...my van is still running hot...although I don't see any smoke or smell anything....I did find out that the man that put in my radiator only put...


Well, it has to have coolant of some kind. Water alone will boil before the cooling fan kicks on.
It does not have to be dex-cool as I stated in another answer.

Aug 10, 2013 | Pontiac Montana Cars & Trucks

1 Answer

I have a 2002 buick lesabre and the water pump was changes about a month ago. The car ran fine. The last week, the car is temp gauge is reading hot very fast. I dont smell any coolant and it doenst sm


some times when the water pump is changed you gotta fill up the radiator with coolant, run the engine until it gets hot, shut off the car and wait until the car cools down to put more coolant because some air may stay trapped inside and by following this steps you get rid of the air trapped inside.
try this:
1) when the car is cool take the cap of the radiator off and see if it's full. if it isn't, with the car still off, put some coolant until it gets full.

2) once the radiator is full, start your car and wait to see if the coolant goes down the radiator. if it does, keep putting coolant until it doesn't take any more.

Hope to be useful.

Sep 07, 2012 | 2002 Buick LeSabre

1 Answer

2006 Chevy Uplander LS coolant capacity?


Cooling SystemTotal Cooling System Capacity (qts) : 12.15


Source: chevrolet-uplander-4dr-ext-wb-fwd-ls

Aug 24, 2012 | Cars & Trucks

1 Answer

Hi. 2005 Impala 3.4. My water pump is failing for the second time in two years. Coolant flushed after first pump installed. Coolant flushed again six months ago. Pump is failing again. Thermostat...


WATER PUMP FAILURE COULD BE CAUSED BY WRONG COOLANT USE DEX COOL ANTI FREEZE.REPLACE THERMOSTAT AND BOTH RADIATOR HOSES TOP HOSE AND BOTTOM HOSE.SOFT HOSES COLAPSE LIKE PUMP HOSE.IT WILL COLAPSE FROM PUMP VACUUM CLOSING OFF SOME COOLANT FLOW.MAKE THE HEATER CORE NOT STOPPED UP IF SO IT WILL RESTRICT WATER PUMP BYPASS CAUSE EARLY PUMP FAILURE.YOU NEED 50/50 COOLANT MIXTURE YOU HALF WATER AND HALF DEX COOL DONT USE GREEN ANTI FREEZE USE ORANGE DEX COOL.I HAVE 3.4L ENGINE AND 3.1L ENGINE BEEN USING DEX COOL ANTI FREEZE SINCE I HAD BOTH VECHICLES. HAD NO WATER PUMP PROBLEMS.

Jan 23, 2011 | 2005 Chevrolet Impala

2 Answers

Found rust like material in water system change radiator and water pump thermostat .flushed system numerious times car still runs hot and water is still a rusty mess.


You may have to flush the system again. Did you use a commercial flush such as Prestone Super Flush? Plain water won't remove the rust and sludge. The Dex-cool antifreeze that GM recommends for their cars is bad about forming a gummy sludge in the cooling system. It clogs radiators and heater cores. I would suggest another flush with the Prestone product. Follow the directions closely for best results. One thing that will help is. after you drain the radiator, refill with clear water and let the engine run until the coolant is circulating good, then drain it again. Do this three or four times. This will ensure that all the antifreeze has been removed from the engine block. When you refill the radiator, use a green antifreeze that is compatible with aluminum radiators and aluminum engine parts. Do not use Dex-cool. Dex-cool can also cause the intake gaskets to fail. Make sure the new thermostat is at least a 195degree unit and that it is installed correctly. you would be surprised how many thermostats get installed upside down. After refilling the radiator, leave the radiator cap off and let the engine run until the coolant is flowing. Keep adding antifreeze each time the coolant is pulled down into the radiator. Use full strength antifreeze because the water that is retained in the block will dilute it. A 50/50 mixture won't protect below freezing.

Dec 27, 2010 | 2003 Buick Rendezvous

2 Answers

How often should you change coolant in 2001 Chevy Cavalier? Should you only use Dex-Cool? My Car has 105,000 Miles on it now. I changed the coolant (Dex-Cool) about 2 or 3 years ago? Also my Check Gages...


Sounds like air in system, repair any leaks flush and add universal antifreeze, and to get air out without special equipment, fill best as possible, start engine drive around block. Let vehicle set until cold. Then check coolant level again, repeat until guage stays normal

Oct 14, 2010 | 2001 Chevrolet Cavalier

2 Answers

What type of coolant to put in


50/50 antifreeze and water. pontiac or GM recommends the use of Dex cool antifreeze but it really doesnt matter. You have to check the color of the coolant orange you need to use extended life, if its green just use regular 50/50

Apr 28, 2010 | 2004 Pontiac Grand Am

3 Answers

1998 monte carlo coolant


I just did a lower intake reseal on my 98 monte's 3100, it's not tough to do, the biggest part is paying attention to what pushrod came from what position and ensuring they go back to where they came from, not only for wear patterns, but for different lengths on the intake and exhaust push-rods.

I work for a GM dealer in northwest montana, and I can say it's not cheap labor-wise, generally around 6 hours of labor and around 300 in parts...it can add up quick, but when those intakes start leaking oil and coolant, things can go sour quickly...espeically if coolant starts leaking into the engine, not good for bearings.

Dex cool is not the problem with these gaskets leaking, it's common on 3100's, 3400's, 3300's, etc, any motor from that series that has that style of lower intake is prone to the issue, the rubber/plastic/composite will eventually warp, break down, crack, seperate from hot and cold cycles, I've seen it all too many times. Dex cool is the best coolant out there, there's a reason that prestone, peak, zerex can't compete, in fact a few of those blends are blends that are less efficient that Dex that GM decided not to patent. But the Dex patent is due to run out soon to the point everyone can start using dex. One issue with dex is the "gum-up" problem when the mixture is not ideal and the level is left low, but flushing and setting proper mixture (50/50) and level will alleviate this problem.

Jun 22, 2008 | 1998 Chevrolet Monte Carlo

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