Jump to content

Antifreeze leak

Roscopcoletrain

Recommended Posts

Roscopcoletrain Senior Enthusiast

Roscopcoletrain

Posted
Posted

So since we bought the truck (used) a few weeks ago, I could smell antifreeze from the front. I asked them to look at it initially before we took delivery. They said they found nothing. Fast forward a few weeks, still smell it. Overflow looks low. So I ask them to look at it again. Tech says he did a pressure test, found nothing, a bit of dampness near the back of one cylinder head, just to keep an eye on it. So I get home today with it from the dealer... Tell me what you see?

 

fkdh5mr.jpg

 

tpOXi2L.jpg

 

VwIiiIB.jpg

Roscopcoletrain Senior Enthusiast

Roscopcoletrain

Posted
  • Author
Posted
53 minutes ago, Doublebase said:

Leaking from the radiator side tank? Pretty commmon and not always obvious. They kind of seep.

 

You'd think a tech doing a pressure test would see this.  

 

Spoke to another dealer, said they'd do it again with a dye test. 

Supreme Pizza Senior Enthusiast

Supreme Pizza

Posted
Posted
3 hours ago, Roscopcoletrain said:

a bit of dampness near the back of one cylinder head

 

Blown head gasket, based on your description. Only you can decide the level of alarm: 

 

1) Not a big deal 

2) Cause for alarm 

3) Not good at all

4) Extremely bad

 

 

 

 

 

679dd60dbe2e486245ec5c6cebe8756a.jpg

engine overheat.jpg

How-to-stop-your-engine-from-overheating.jpg

Roscopcoletrain Senior Enthusiast

Roscopcoletrain

Posted
  • Author
Posted
2 minutes ago, starman8tdc said:

 

Blown head gasket, based on your description. Only you can decide the level of alarm: 

 

1) Not a big deal 

2) Cause for alarm 

3) Not good at all

4) Extremely bad

 

 

 

 

 

679dd60dbe2e486245ec5c6cebe8756a.jpg

engine overheat.jpg

How-to-stop-your-engine-from-overheating.jpg

I asked that question, they said no. That said, they also said I had no leak lol

 

Well I'm going camping this weekend. Will either be non eventful or end in disaster ☺️

Supreme Pizza Senior Enthusiast

Supreme Pizza

Posted
Posted

The mechanics description suggests a blown head gasket. Your pictures indicate a problem in the radiator area. The primary cause of head gasket failure, is coolant loss. Coolant loss is often caused by a leak in the cooling system - such as the radiator. 

 

   If your cooling system looses to much coolant, either through a leaking head gasket or a radiator leak, then your truck will grind to a stop and have catastrophic mechanical failure. 

 

   Its like buying a horse that has a leaking circulatory system. Sooner or later, it will stop - unless you give it a blood transfusion. Same thing applies for your truck. Keep adding coolant every 25 miles, or be prepared to call a tow truck. 

 

   If you did not buy an warranty with your used truck, then your pretty much "trucked". 

Roscopcoletrain Senior Enthusiast

Roscopcoletrain

Posted
  • Author
Posted

Yeah pretty much. It's definitely going to be looked into though more. In the meantime, gonna keep a close eye on the level and the temp gauge ?

Supreme Pizza Senior Enthusiast

Supreme Pizza

Posted
Posted

If you would like to diagnose the problem, I can help - and I can walk you through the repair process. 

 

If you have no warranty, don't bother returning to the dealer. They will not give you any free buckets of money. 

 

Don't give up hope, if you have a bad radiator and a blown head gasket - you may be able to patch both for about $35 total. 

 

The dealer would charge around $3,400 for a "proper" fix. 

 

 

Supreme Pizza Senior Enthusiast

Supreme Pizza

Posted
Posted

Oh, well in that case - I would ask them to do a leak down test, a compression test, and a cooling system pressure test. Also have them probe the exhaust for coolant vapor, and test the cooling system for combustion gas residue. If you have a warranty - you might as well use it. 

 

 

Roscopcoletrain Senior Enthusiast

Roscopcoletrain

Posted
  • Author
Posted
22 minutes ago, Sierra Dan said:

Roscoe,

 

Have you seen this Topic:

 

https://www.gm-trucks.com/forums/topic/194376-letter-cycling-thermostat/

i have. i actually printed that off and gave it to my Chev dealer.  They didnt seem to think my truck was covered under that. But next week when we get back from camping, it will be looked into more. 

Sierra Dan Senior Enthusiast

Sierra Dan

Posted
Posted

Do you have a Certified Pre-Owned warranty or is your warranty up?

The above Cycling Thermostat issue was a TSB.

From what I understand it depends on the dealer's discretion.

Roscopcoletrain Senior Enthusiast

Roscopcoletrain

Posted
  • Author
Posted
3 hours ago, Sierra Dan said:

Do you have a Certified Pre-Owned warranty or is your warranty up?

The above Cycling Thermostat issue was a TSB.

From what I understand it depends on the dealer's discretion.

Im Still under the powertrain warranty. 

Archived

This topic is now archived and is closed to further replies.

Go to topic listing

  • Latest Articles

  • Posts

    • Atlas
      OCI, not when but why?

      By Atlas · Posted

      On the subject of OLM, Gm's OLM tool may be more "informed" than others brands. I recall OLM's in mid-2000's Chrysler products literally counting down a set number of miles. That's all the OLM appeared to be.    I would actually expect GM to be able to explain the parameters that their OLM takes into account from a high level. No, I would not expect them to disclose their software coding or data analysis around their parameters.   So we're talking about two different topics, so to continue the subject on the other one, I'd be curious to know how much "standard particulate matter" in fresh oil is able to be filtered at first start by a fresh oil filter. How much particulate matter is enough to "matter"?   I.e. how much of a "lever" do we think this equates to (variability in particulate content, in fresh oils, between different makes/brands, some which filter less, and some that filter more).   We can say that more particles = more wear = shorter engine life as a logical statement and use that data with a little marketing to scare people into selecting a more refined/filtered oil. Using a similie, is this like deciding to forego two alcoholic drinks in a lifetime because we're worried about the potential impact on lifespan? Are there numbers which translate the ISO test results into a quantifiable increase in wear for a given engine/use case?
    • chris21
      Brand new to this forum. Questions about re-gearing my 26’ HD

      By chris21 · Posted

      I'm pretty sure it doesn't actually recalibrate the speedometer it just changes the wheel speed sensor inputs to the computer. The truck still thinks it has stock tires.
    • asilverblazer
      OCI, not when but why?

      By asilverblazer · Posted

      I apologize, I missed this post, at risk of going off CURRENT TOPIC.   I'm not saying it is BS, I'm questioning how much information is being held back. GM is NOT going to spell out exactly every parameter in the algorithm. Liability, intellectual property, etc.    I'm not naive enough to believe that it is as simple as revolutions, coolant temperature, miles, time; are you?    I don't do irrational either, and boiling the OLM down to four simple values that I could code in an afternoon (I'm not a coder) is irrational - unless it suits your agenda to ignore it. 
    • BDS my HD
      Brand new to this forum. Questions about re-gearing my 26’ HD

      By BDS my HD · Posted

      Chris 21 I appreciate your constructive response. !!  😉😉😉   The 6.6 is gas.  Correct me if I’m wrong but by recalibrating the speedo you’re correcting the shift points of the transmission on these trucks.?.
    • newdude
      Brand new to this forum. Questions about re-gearing my 26’ HD

      By newdude · Posted

      That is a huge misconception.     Bigger does not always equal safer.  Modifying does not make it safer either, with exceptions.   Think of this.  Your truck in stock form is capable of emergency maneuvers, proper stopping distances, its handling is designed around the factory wheel/tire packages, etc.   37s and a lift?  Now you've affected your braking distances, handling and ride control.  You've raised your center of gravity higher.  Your front visibility is now obstructed more than stock, same for your rear.  Does it look cooler?  Yes.  Does it now work as good as it did from factory on road?  NO.       As for my mention of exceptions?  Say you had a sedan or crossover.  They typically come with all season tires.  If you swap out for a performance all season or a summer tire, you improve your car by lowering its stopping distance (better braking because of traction) and improve the handling (regular and emergency) of the vehicle.  That is an actually improving modification.  My old 2019 LD 1500, I ran UHP all season tires on 20in wheels in a factory offered size.  It improved all aspects of how it drove over the Duratracs it came with from the factory in the stock 18" tire.  

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...