How JustAnswer Works:

  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.

Ask Ken Your Own Question

Ken
Ken, ASE Certified Technician
Category: Buick
Satisfied Customers: 754
Experience:  GM & SATURN Factory Trained Technician, 25 Years Experience
16282319
Type Your Buick Question Here...
Ken is online now
A new question is answered every 9 seconds

Buick LaCrosse CXL Are there coolant drain plugs on the 2005

Resolved Question:

Are there coolant drain plugs on the 2005 Lacrosse 3800 engine and radiator? Is the bleed screw on the thermostat the only one there is ? Or is there one on the intake manifold or head also? Thanks.
Submitted: 4 years ago.
Category: Buick
Expert:  Ken replied 4 years ago.
Hi and thank you for your question! I am going to send you information on how to drain and refill the cooling system. Thank You Ken Cooling System Draining and Filling (L26)

Draining Procedure

Tools Required

J 26568 Coolant and Battery Fluid Tester

Caution: To avoid being burned, do not remove the radiator cap or surge tank cap while the engine is hot. The cooling system will release scalding fluid and steam under pressure if radiator cap or surge tank cap is removed while the engine and radiator are still hot.

    Important: Draining the cooling system with the pressure cap installed will syphon the coolant from the overflow tank.

  1. Remove the coolant pressure cap.
  2. Place a drain pan under the drain cock.
  3. Open the radiator drain cock.
  4. Drain the cooling system.
  5. If a complete engine block drain is required for the L26 or L32 engine, remove the knock sensors.
  6. Inspect the coolant.
  7. Follow the appropriate procedure based on the condition of the coolant.
    Normal in appearance--Follow the filling procedure.
    Discolored--Follow the flush procedure. .

Filling Procedure

    Notice: The procedure below must be followed. Improper coolant level could result in a low or high coolant level condition, causing engine damage.

  1. Close the radiator drain cock.
  2. If the engine block was drained for the L26 or L32 engine, install the knock sensors. .
  3. Open the cooling system bleeder screw.

    Important: Use a 50/50 mixture of DEX-COOL antifreeze and clean, drinkable water.

  4. Slowly fill the cooling system with a 50/50 coolant mixture.
  5. After the coolant is visible and stable at the filler neck, push down on the upper radiator hose to remove air. While pushing down on the radiator hose ensure that the filler neck is full of coolant.
  6. Close the cooling system bleeder screw.
  7. Release the upper radiator hose and add coolant to the filler neck.
  8. Push down on the upper radiator hose and try to move any air in the upper hose back to the radiator. Repeat this step three times and add coolant to the filler neck each time.
  9. Install the coolant pressure cap.
  10. Fill the coolant recovery bottle to the indicator line.
  11. Start the engine.
  12. Run the engine at 2,500 RPM until the engine is hot enough to open the thermostat.
  13. Allow the engine to idle for 3 minutes.
  14. Shut the engine OFF.
  15. Allow the engine to cool.
  16. Top off the coolant as necessary.
  17. Inspect the concentration of the engine coolant .
  18. Rinse away any excess coolant from the engine and the engine compartment.
Ken, ASE Certified Technician
Category: Buick
Satisfied Customers: 754
Experience: GM & SATURN Factory Trained Technician, 25 Years Experience
Ken and other Buick Specialists are ready to help you
Expert:  Ken replied 4 years ago.
Knock Sensor 1 Replacement

Removal Procedure

    Caution: Hot engine coolant may cause severe burns. Although the cooling system has been drained, coolant still remains in the engine water jacket. This coolant will drain with the removal of the knock sensor.

  1. Raise and support the vehicle.

    Attachments are only available to registered users.

    Register Here


  2. Drain the cooling system.
  3. Disconnect the knock sensor electrical connector (2).
  4. Remove the knock sensor (1).

Installation Procedure


    Attachments are only available to registered users.

    Register Here


    Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

    Important: DO NOT apply thread sealant to sensor threads. The sensor is coated at factory and applying additional sealant will affect the sensors ability to detect detonation.

  1. Install the knock sensor (1).

    Tighten
    Tighten the knock sensor to 19 N·m (14 lb ft).

  2. Connect the knock sensor electrical connector (2).
  3. Lower the vehicle.
  4. Fill the cooling system.
Expert:  Ken replied 4 years ago.
Knock sensor 2 wants you to remove the transmission to get to it. Ken Knock Sensor 2 Replacement

Removal Procedure

Caution: Hot engine coolant may cause severe burns. Although the cooling system has been drained, coolant still remains in the engine water jacket. This coolant will drain with the removal of the knock sensor.

  1. Remove the transmission. .
  2. Raise and support the vehicle. .
  3. Drain the cooling system.
  4. Disconnect the knock sensor electrical connector (3) from the knock sensor.

    Attachments are only available to registered users.

    Register Here


  5. Remove the knock sensor (4).

Installation Procedure

Important: DO NOT apply thread sealant to sensor threads. The sensor is coated at factory and applying additional sealant will affect the sensors ability to detect detonation.


    Attachments are only available to registered users.

    Register Here


  1. Install the knock sensor (4).

    Tighten
    Tighten the knock sensor to 19 N·m (14 lb ft).

  2. Connect the knock sensor electrical connector.
  3. Lower the vehicle.
  4. Fill the cooling system. Install the transmission. .
Expert:  Ken replied 4 years ago.
If you are just doing a service ,I would just drain the radiator. Then refill to system with water. Drain to again after driving and letting it cool. Then fill it with Dex cool. Ken
Ken, ASE Certified Technician
Category: Buick
Satisfied Customers: 754
Experience: GM & SATURN Factory Trained Technician, 25 Years Experience
Ken and other Buick Specialists are ready to help you

JustAnswer in the News:

 
 
 
Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.
 
 
 

What Customers are Saying:

 
 
 
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C. Freshfield, Liverpool, UK
< Last | Next >
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C. Freshfield, Liverpool, UK
  • This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!! Alex Los Angeles, CA
  • Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult. GP Hesperia, CA
  • I couldn't be more satisfied! This is the site I will always come to when I need a second opinion. Justin Kernersville, NC
  • Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around. Esther Woodstock, NY
  • Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know. Robin Elkton, Maryland
  • He answered my question promptly and gave me accurate, detailed information. If all of your experts are half as good, you have a great thing going here. Diane Dallas, TX
 
 
 

Meet The Experts:

 
 
 
  • Dave Nova

    Buick Technician

    Satisfied Customers:

    1718
    ASE Master Certification. GM World Class Certification
< Last | Next >
  • http://ww2.justanswer.com/uploads/DT/dt69nova/2012-6-15_234154_pic1.64x64.jpg Dave Nova's Avatar

    Dave Nova

    Buick Technician

    Satisfied Customers:

    1718
    ASE Master Certification. GM World Class Certification
  • http://ww2.justanswer.com/uploads/PE/peterpete190/2012-2-24_1274_20120215135406.64x64.jpg Pete's Avatar

    Pete

    Buick Technician

    Satisfied Customers:

    1257
    15 years Buick Technician experience and training.
  • http://ww2.justanswer.com/uploads/ggrote1/2009-06-27_031011_me.jpg Gary's Avatar

    Gary

    Buick Technician

    Satisfied Customers:

    768
    15 years master GM tech and mater ASE tech
  • http://ww2.justanswer.com/uploads/testedtuff/2009-09-26_170108_pictures.jpg John's Avatar

    John

    Buick Master Technician

    Satisfied Customers:

    731
    ASE A1-A8 w/L1 GM master technician.Factory certified with 40 years experience.
  • http://ww2.justanswer.com/uploads/joecamel90/2008-11-13_03615_head_shot.jpg George H.'s Avatar

    George H.

    ASE Certified Technician

    Satisfied Customers:

    411
    ASE Master 15+years
  • http://ww2.justanswer.com/uploads/MO/molurch/2012-6-6_214526_500.64x64.png Don 'Mo Lurch''s Avatar

    Don 'Mo Lurch'

    Buick Mechanic

    Satisfied Customers:

    393
    GM, Chevrolet Cert., Heavy Line Mech, Race Shop Owner, Mobile Electronics.
  • http://ww2.justanswer.com/uploads/Rocket2005/2009-09-13_133703_jack.jpg cartech's Avatar

    cartech

    ASE Certified Technician

    Satisfied Customers:

    307
    master tech automotive shop owner and tech 25 years
 
 
 
Chat Now With A Buick Mechanic
Ken
Ken
GM Auto Tech.
23 Satisfied Customers
GM & SATURN Factory Trained Technician, 25 Years Experience