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 BigBob Your Own Question

BigBob
BigBob, Service Manager/Service Manager
Category: GM
Satisfied Customers: 4837
Experience:  Shop Manager with 25 years experience
Type Your GM Question Here...
BigBob is online now
A new question is answered every 9 seconds

1999 silverado, how do I replace the hose connectors to the

Customer Question

1999 silverado, how do I replace the hose connectors to the heater core that are located in the engine comparment?
Submitted: 4 years ago.
Category: GM
Expert:  BigBob replied 4 years ago.
Greetings,

J 43181 Quick Connect Connector Removal Tool. You can get these quick connect removal tools at most local auto parts stores. graphic

let me know if I can help further.

Good luck,

Bob


Customer: replied 4 years ago.
The answer was helpful for understanding only, as there are no auto parts stores in my area that carry a removal tool that will help. After replacement I am still having problems. I filled the radiator and checked flow through the heater core and engine but i still have overheating problems and the heater hasn't worked since the core connector broke. I am left with two issues. My service manual indicates that once the engine is up to temp the fan should be difficult to rotate, which isn't the case, indicating a faulty fan clutch. It also suggests that pinching the upper radiator hose and releasing it should produce a noticable surge, which isn't present, indicating a faulty water pump. I am at a loss. The connector that I was able to procure has a 1/2 inch male pipe which I have adapted to fit the 5/8 ID hose on what i believe is the heater core inlet. A standard garden hose hooked to the heater core outlet, as best as I can ascertain, produces good flow from the inlet hose. The same set up on the engine also produces good flow, yet i still have a problem with overheating and the heater hasn't worked since the core connector failed. What on earth could be causing this problem?
Expert:  BigBob replied 4 years ago.
So with the heater core hooked up and the engine running at operating temperature are both hoses going to the heater very hot? When the engine is at operating teperature are both radiator hoses hot? When does it overheat at idle, highway speeds or both?


Bob
Customer: replied 4 years ago.
I also removed the thermostat in an attempt to eliminate it as a possible problem. Everything put back together and allow the truck to idle to operating temperature, neither the hoses on the radiator or to the heater core got hot. Last evening I drove around my neighborhood thinking moving would help but it didn't. Same symptoms, overheating and the heater blows cool air.
Expert:  BigBob replied 4 years ago.
What size motor do you have?

Bob
Customer: replied 4 years ago.
I've got a 99 sliverado extended cab with the 5.3 liter.
Expert:  BigBob replied 4 years ago.
It sounds like the radiator is plugged up. When running the vehicle check the temp at the radiator when it starts to get hot, if theradiator is still cool it is probably plugged up. Since the heater core was plugged up this is a good possibility


Bob

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:

 
 
 
  • I was having a terrible problem with the wheel bearings on my 98 Chevy Cavalier and I suspect that using this website saved me plenty of time and money. Todd L Rochester NY
< Last | Next >
  • I was having a terrible problem with the wheel bearings on my 98 Chevy Cavalier and I suspect that using this website saved me plenty of time and money. Todd L Rochester NY
  • 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
 
 
 

Meet The Experts:

 
 
 
  • Gary

    GMC Technician

    Satisfied Customers:

    903
    15 years gm master tech/15 years ASE master tech
< Last | Next >
  • http://ww2.justanswer.com/uploads/ggrote1/2009-06-27_031011_me.jpg Gary's Avatar

    Gary

    GMC Technician

    Satisfied Customers:

    903
    15 years gm master tech/15 years ASE master tech
  • http://ww2.justanswer.com/uploads/CA/caprio23/2011-12-13_155550_20111213105344.64x64.jpg Anthony's Avatar

    Anthony

    ASE Certified Technician

    Satisfied Customers:

    476
    ASE Master Automobile Technician with over 20 years exp.
  • http://ww2.justanswer.com/uploads/Rocket2005/2009-09-13_133703_jack.jpg car tech's Avatar

    car tech

    ASE Certified Technician

    Satisfied Customers:

    448
    25 year master tech and shop owner
  • http://ww2.justanswer.com/uploads/2P/2paulm/2012-4-4_183431_justabswer.64x64.jpg Paul M ASE Master's Avatar

    Paul M ASE Master

    ASE Master Tech

    Satisfied Customers:

    187
    ASE Master Tech 20+ Years
  • http://ww2.justanswer.com/uploads/MU/muddyford/2012-6-13_1204_1.64x64.png Chris (aka- Moose)'s Avatar

    Chris (aka- Moose)

    GMC Technician

    Satisfied Customers:

    89
    16 years of experience
  • http://ww2.justanswer.com/uploads/AM/amedee/2013-10-24_23656_Amedee1.64x64.jpg Amedee's Avatar

    Amedee

    GMC Technician

    Satisfied Customers:

    360
    ASE Master Technician advanced level specialist
  • http://ww2.justanswer.com/uploads/DT/dt69nova/2012-6-15_234154_pic1.64x64.jpg Dave Nova's Avatar

    Dave Nova

    GMC Technician

    Satisfied Customers:

    2262
    ASE Master Certification. GM World Class Certification