Coolant Issue ? - Chevy Colorado & GMC Canyon
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post #1 of 16 (permalink) Old 04-08-2017, 08:56 PM Thread Starter
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Coolant Issue ?

Hey everyone, new poster here loving my 2016 Duramax , I have had it for a couple of weeks , I have about 1000 miles on it, noticed the coolant level is down , had to add about 16OZ of Dexcool, when I checked the oil the other day , it was at the proper level, I made sure the engine was running and cap off according to the owners manual when adding coolant , anything to be concerned about , I checked the top and bottom , no evidence of any orange Dexcool, has anyone else had to add any coolant , I assume since it is a pressurized expansion tank , I should never have to add anything unless there is a leak somewhere, BTW , I did drive it a little harder on the highway today , that shouldnt have anything to do with it .
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post #2 of 16 (permalink) Old 04-08-2017, 08:58 PM
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16OZ's? That's a lot for a brand new vehicle.

Let the dealer check it out ASAP IMHO.

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post #3 of 16 (permalink) Old 04-08-2017, 09:06 PM Thread Starter
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My mistake , It was 8oz, will continue to monitor, if it continues to drop , will definitely see the dealer .
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post #4 of 16 (permalink) Old 04-09-2017, 09:47 PM
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Mine was low as well and has been fine ever since filling it.

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post #5 of 16 (permalink) Old 04-09-2017, 09:48 PM
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Probably had to burp out some air in the system. Keep an eye on it, hopefully that will be it for the coolant dropping.

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post #6 of 16 (permalink) Old 04-10-2017, 10:18 PM
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Sometimes at the factory they forget to top it off when I worked at the Cadillac dealer the factory didn't charge the a/c all the way up in the escalades I guess it depends on what day it was built at the factory either a Friday afternoon at 4:30 or Monday morning at 8:05 I wouldn't worry to much just keep an eye on it.Like mentioned it might have needed to burp or they didn't top it all the way off at the factory.

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post #7 of 16 (permalink) Old 04-11-2017, 07:35 AM Thread Starter
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Thanks every one , I topped it off on Saturday , have driven around 400 miles since, level hasn't moved whether hot or cold , so keeping fingers crossed .
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post #8 of 16 (permalink) Old 04-14-2017, 11:41 AM
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Mine always smells , I have not changed the upper radiator hose from a two mexico rubber to the one piece silicone yet

I hate plastic couplings..

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post #9 of 16 (permalink) Old 04-16-2017, 10:26 PM
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Mine dumped antifreeze in the passenger floorboard and its in the shop now at 14,500 miles.
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post #10 of 16 (permalink) Old 04-17-2017, 09:04 AM
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Quote:
Originally Posted by Rand1 View Post
Mine dumped antifreeze in the passenger floorboard and its in the shop now at 14,500 miles.
Like to hear more about the culprit in your case.....
Please, don't leave us in the dark!
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post #11 of 16 (permalink) Old 04-17-2017, 09:45 AM
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Quote:
Originally Posted by Vinolush View Post
Like to hear more about the culprit in your case.....
Please, don't leave us in the dark!
Sounds like a bad heater core....
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post #12 of 16 (permalink) Old 04-18-2017, 11:51 AM
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My clamp on bottom hose to radiator wasn't tight - lost 64 OZ in first few hundred miles. Easy fix at dealer.

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post #13 of 16 (permalink) Old 04-18-2017, 03:55 PM
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Just got a call from the dealership that they had to order a new heater core for my truck and it should be here tomorrow. I was hoping it the leak was in some kind of temp control since this truck is a nightmare when it comes to blowing too hot or too cold air.
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post #14 of 16 (permalink) Old 04-24-2017, 11:53 AM
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They replaced the heater core but didn't get the center panel installed correctly which I didn't notice until I was going downhill and tried to hit the EB. The exhaust brake and other switches in that panel were locked down. Later I got two power train fault codes and the engine service light. Back in the shop again today.
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post #15 of 16 (permalink) Old 04-25-2017, 01:43 PM
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Quote:
Originally Posted by Rand1 View Post
They replaced the heater core but didn't get the center panel installed correctly which I didn't notice until I was going downhill and tried to hit the EB. The exhaust brake and other switches in that panel were locked down. Later I got two power train fault codes and the engine service light. Back in the shop again today.
Frustrating!!!!

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post #16 of 16 (permalink) Old 04-26-2017, 06:16 PM
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Covered in another thread but they had to replace a Nox sensor and put the switch panel in properly.
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