Question about 2004 Chevrolet TrailBlazer

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Location of radiator drain plug 2004 chevy trailblazer 4x4

Need to drain a little water out to install antifreeze mix

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  • Chevrolet Master
  • 1,311 Answers

There is no radiator drain plug on these trucks, you have to remove the lower radiator hose to drain coolant.

Posted on Nov 14, 2012

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Posted on Jan 02, 2017

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SOURCE: Radiator Drain Plug Location 99 Astro

I have a 99 Astro & my drain plug is on the passenger side. Look for the small drain tube at the bottom of the plastic tank. The turn knob is right above it.

Posted on Jan 03, 2009

  • 1 Answer

SOURCE: radiator drain plug location 96 chevy 1500

Look on the lower right side(driver's side) of the radiator, It's down there.

Posted on Dec 10, 2008

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SOURCE: replace engine coolant sensor in '04 Trailblazer

http://www.autozone.com/shopping/repairGuide.htm?pageId=0900c152800a1187

Posted on Dec 04, 2008

goofduck
  • 490 Answers

SOURCE: Oil in the water (radiator) 1996 Vortec 350 Chevy Z71 4x4

i would try to flush the cooling system completely
if I had to guess someone put stop leak in it when the freeze plug started leaking
also check the oil to make sure there is no water in the oil

Posted on Apr 15, 2009

  • 1 Answer

SOURCE: change antifreeze 2005 chevy aveo

the drain plug is hidden it is located on the lower side of the radiator and that would on the passanger sideof the radiator....all you need is a 1/4 drive arachet and 12mm socket

Posted on Jun 07, 2009

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We took off the breather cover on a 2004 chevy trailblazer and there was water in it


Sounds like you may have a bad valve cover gasket. same thing was happening on my wife's Chevy Aveo. Valve cover gasket was worn and when I replaced it and cleaned plug wells, issue was resolved.As for the breather, I really wouldn't know why there's water in there.Only thing I would suggest there is to check your antifreeze level. Is it water from the antifreeze?

Mar 24, 2013 | 2004 Chevrolet TrailBlazer

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Where is the engine drain plug?


It is always on the lower side of the oil pan on the "bulge".

Aug 17, 2011 | 2004 Honda Accord

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I want to learn how to drain and flush my radiator. I need help on how to do so without making as mess


well its bound to make a little mess but you should have a drain plug on the radiator at the bottom towards the engine side on one of the 2 tanks (sides of radiator ) unscrew drain plug and let drain into a pail or pan ( 2 gallon ) after it drains remove lower radiator hose. use a garden hose and fill radiator and let it flush for a little, hook lower radiator hose back, tighten drain plug and fill with a 50/50 mix new antifreeze,

Feb 07, 2011 | 1996 Ford Taurus

1 Answer

Water dripping right front underneath


Is what the liquid plain water or coolant (water mixed with antifreeze). touch and smell the liquid, no smell = water, antifreeze smell and oily feel = coolant.
If plain water, could be Air Condition condensation dripping from condensation drain which is normal. (this drain is usually located near the center of the vehicle).
If coolant, could be leak(s) from: radiator, radiator hose, heater hose, water pump, engine freeze plug. A coolant system pressure test should show what is leaking.

Oct 06, 2010 | 2005 Hyundai Santa Fe

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I want to change my antifreeze in my 2003 merc grand marque. Where is the drain plug on the radiator? Do I pour the new antifreeze into the overflow tank on top when I refill it?


look down at rad from top to get familiar with where i am talking about. now opposite side of the lower rad hose is where you want to go, two styles of rads, one has a wing nut type white plug, and other as 6 sided white plug, unthread with pliers or by hand loosen till desired flow is coming out. fill into reservior or overflow tank to half way and run engine til i reaches operating temperature and you has good heat out of heater, this makes sure all air is out of system, and this is complete ttop up to full and install cap

Jul 06, 2010 | 2003 Mercury Grand Marquis

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Where is the thermostat sensor


Both the 4.0L and 4.7L engines use 195� thermostats for all model years from 1999-2004. When replacing a thermostat it is very important to install one with the same temperature rating (the only exception might be with certain performance modifications or chips that recommend or require a different temperature thermostat).

4.0L engine - Draining the cooling system WARNING: DO NOT REMOVE THE CYLINDER BLOCK DRAIN PLUGS OR LOOSEN THE RADIATOR DRAINCOCK WITH SYSTEM HOT AND UNDER PRESSURE. SERIOUS BURNS FROM COOLANT CAN OCCUR.

1. DO NOT remove radiator cap first. With engine cold, locate radiator draincock on the right lower side of radiator facing to rear of vehicle.
2. Attach one end of a hose to the draincock. Put the other end into a clean container. Open draincock and drain coolant from radiator. This will empty the coolant reserve/overflow tank. The coolant does not have to be removed from the tank unless the system is being refilled with a fresh mixture. When tank is empty, remove radiator cap and continue draining cooling system. To drain the engine block of coolant, remove the cylinder block drain plug, located on the side of cylinder block below the exhaust manifold.

4.0L engine - refilling the cooling system Coolant recommendations and cautions: The recommended mixture is 50/50 ethylene-glycol and low mineral content water. Never use pure antifreeze. Only Mopar Antifreeze Coolant, 5 Year/100,000 Mile Formula (glycol base coolant with corrosion inhibitors called HOAT) is recommended. This coolant offers the best engine cooling without corrosion when mixed with 50% distilled water. Antifreeze mixture must always be at least 44%, all climates year round. Maximum protection (-90d) is provided with a 68% mixture protection. If the percentage is lower than 44 percent, engine parts may be eroded by cavitation, and cooling system components may be severely damaged by corrosion. CAUTION: Mopar Antifreeze/Coolant, 5 Year/100,000 Mile Formula (MS-9769) may not be mixed with any other type of antifreeze. Mixing of coolants other than specified (non-HOAT or other HOAT), may result in engine damage that may not be covered under the new vehicle warranty, and decreased corrosion protection.

CAUTION: Do not use coolant additives that are claimed to improve engine cooling. 4.0L coolant capacity: 1999-2000: 13.0 qts. (including 2.3 qts. for resevoir) 2001-2004: 15.0 qts. (including 1 qt. for resevoir)

1. Tighten the radiator draincock and the cylinder block drain plug(s) (if removed).
2. Fill system using a 50/50 mixture of ethyleneglycol antifreeze and low mineral content water. Fill radiator to top and install radiator cap. Add sufficient coolant to the reserve/overflow tank to raise level to FULL mark.
3. With heater control unit in the HEAT position, operate engine with radiator cap in place.
4. After engine has reached normal operating temperature, shut engine off and allow it to cool. When engine is cooling down, coolant will be drawn into the radiator from the reserve/overflow tank.
5. Add coolant to reserve/overflow tank as necessary. Only add coolant to the reserve/overflow tank when the engine is cold. Coolant level in a warm engine will be higher due to thermal expansion. To purge the cooling system of all air, this heat up/cool down cycle (adding coolant to cold engine) must be performed three times. Add necessary coolant to raise tank level to the FULL mark after each cool down period.

For more details, you can refer to the Jeep WJ Service Manual Section-07-Cooling-System-Ewj7

Hope helped.

Nov 02, 2009 | 1999 Jeep Grand Cherokee

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Replacing fluids 0n 1996 300zx


radiator antifreeze: open drain **** on radiator and drain refill with water re plug and leave radiator cap off. start vehicle. watch when coolant drops or rises drastically as that is the thermostat opening. at that time re open drain **** and fill radiator with hose water at the same time. when water coming out is completely clear again turn vehicle off and drain radiator again. fill with antifreeze and water mix. 50/50

oil: jack up car, find oil plug, directly behind steering rack on oil pan. undo plug and drain oil into container. while oil is draining remove oil filter. wait for oil to drain completely then re-install drain plug and new oil filter(filled with oil) undo oil cap and pour in oil 4.5 quarts on n/a and 5 for turbo. tighten cap and your done.

brake system: dont attempt, use an experienced mechanic as the lines need to be bled in numerous places including inside the car from the abs module mounted behind the passenger seat.
easy brake system: individually bleed brakes while adding fluid until clear fluid comes out. (not efficient)

a/c: do not attempt unless you have an evac pump for ac systems.

clutch: same as easy brake except using the bleed valves at the slave cylinder and on passenger side fender well.

washer fluid: add fluid and squirt a little to make sure there is no air in the line

Jul 18, 2009 | 1996 Nissan 300ZX

1 Answer

Oil in the water (radiator) 1996 Vortec 350 Chevy Z71 4x4


i would try to flush the cooling system completely
if I had to guess someone put stop leak in it when the freeze plug started leaking
also check the oil to make sure there is no water in the oil

Apr 15, 2009 | 1999 Chevrolet Silverado 1500

1 Answer

I NEED TO FLUSH THE INTERCOOLER SYSTEM OUT AND REPLACE THE COOLANT, WHAT IS THE BEST WAY TO DO THIS?


  1. Start with a stone cold engine

  2. Open the radiator cap

  3. Open the radiator drain plug and let out as much coolant as will drain';

  4. Replace drain plug and refill the sytem with distilled water

  5. Run the engine for for few minutes until it is warm (not hot);

  6. Repeat steps #3, #4 and #5 until you've effectively replace all of the coolant with distilled water. You'll know your finished draining the system when only clear water drains out.

  7. Drain the system one last time (now only residual distilled water should be in your cooling system);

  8. **** out all the coolant in the overflow tank (I use a Turkey baster or a huge syringe with a short length of rubber tubing.)

  9. Replace the radiator drain plug.

  10. Add undiluted anti-freeze to the system;

  11. Run the engine to mix the distilled water already in the cooling system with the newly added antifreeze.

  12. Check the antifreeze/water concentration with a tester.

  13. Over the next few days, adjust to the desired antifreeze/water mixture over the next several days. You'll likely have to **** out a little coolant mixture from the fill cap to create room for either the distilled water or the anit-freeze you'll be adding to adjust to the desired concentration. Sometimes I adjust by adding either water or antifreeze to the coolant- overflow tank which utimately mixes with the engine coolant;

  14. Don't forget to add collant and/or water to the coolant overflow tank.

Mar 28, 2009 | 2002 Mitsubishi Lancer

1 Answer

How do i drain the radiator and flush out on a 1999 chevy blazer?


open the drain valve on the bottom inside of the radiator, run the engine with the garden hose in the radiator cap, have the heater switched on high temp.  After the water comes out clean, turn off engine and let all water drain out.  Replace with 50/50 mix if distilled water and antifreeze.  Collect old antifreeze as it is very toxic and poisonous. 

Mar 11, 2009 | 1999 Chevrolet Blazer

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