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Chevy Duramax Coolant Problem Question for OT Mechanics
Posted on 1/12/15 at 7:50 pm
Posted on 1/12/15 at 7:50 pm
I have been having problems with my coolant level in my Duramax. I replaced a leaking water pump but my coolant level still drops quickly. I believe the leak has been fixed but the coolant is pouring through the overflow tube at times. Any ideas what could be causing this.
TIA
TIA
8
Posted on 1/12/15 at 8:00 pm to Ambassador
quote:
I replaced a leaking water pump but my coolant level still drops quickly. I believe the leak has been fixed
I as not as easily convinced.
Posted on 1/12/15 at 8:04 pm to Ambassador
Not sure, but I've had a thermostat issue with my Duramax. Low coolant was a symptom. That said, I just rolled over 300,000 miles on my GMC and it's still running like a scalded arse ape.
Posted on 1/12/15 at 8:04 pm to Btrtigerfan
quote:
I as not as easily convinced.
We ran a pressure test on the system. No evident leaks. The coolant is coming out the overflow on the reservoir.
Posted on 1/12/15 at 8:11 pm to Ambassador
quote:
We ran a pressure test on the system. No evident leaks. The coolant is coming out the overflow on the reservoir.
I was just messing with you. You have a blown out head gasket.
eta: If you are really, really lucky, you might have a bad radiator cap. Inspect the rubber gasket on it for cracks.
This post was edited on 1/12/15 at 8:13 pm
Posted on 1/12/15 at 8:12 pm to Btrtigerfan
Yea head gasket would be my guess. You're pushing compression into the coolant system
Posted on 1/12/15 at 8:19 pm to Ambassador
On that engine, its almost a no brainer= bad head gasket.
Knew 2 guys in Homer that had 2003 Duramax's and they both needed head gaskets within warranty. One of them needed a head too.
Obviously there have been improvements, but its still a common enough problem with ANY diesel. Doesn't matter who makes it.
Knew 2 guys in Homer that had 2003 Duramax's and they both needed head gaskets within warranty. One of them needed a head too.
Obviously there have been improvements, but its still a common enough problem with ANY diesel. Doesn't matter who makes it.
Posted on 1/12/15 at 8:22 pm to lsewwww
quote:
On that engine, its almost a no brainer= bad head gasket.
People that used tuners or High performance chip are more susceptible to damage. That engine can make enough torque to stretch the head bolts.
Posted on 1/12/15 at 8:23 pm to lsewwww
Thanks everyone. Is replacing a bad head gasket expensive?
Posted on 1/12/15 at 8:28 pm to Ambassador
quote:
Is replacing a bad head gasket expensive?
I'm not sure on that. I had a 06, and now an '11. I haven't had serious trouble, but oil changes are almost $100.
Posted on 1/12/15 at 8:38 pm to Ambassador
Heater hose elbows and water pumps go out on those things. $9 for plastic heater hose elbows or $11 for aluminum lifetime warranty ones.
Posted on 1/12/15 at 9:04 pm to Ambassador
Need to do a leak down test to confirm blown head gasket. But if you are pushing out coolant from the overflow (and not overheating) that is most likely the problem.
A new head gasket on a modern diesel is above the scope of most home mechanics.
Definitely get a quote. If you're around BR, Tricare on Airline specializes in newer diesel repairs.
A new head gasket on a modern diesel is above the scope of most home mechanics.
Definitely get a quote. If you're around BR, Tricare on Airline specializes in newer diesel repairs.
Posted on 1/12/15 at 9:08 pm to AndyCBR
Any recommendations for the West Monroe area?
Posted on 1/12/15 at 9:09 pm to Ambassador
I agree with the others...sounds like when the water pump went out, you overheated and either blew a head gasket or cracked a cylinder head...
have to admit, I think you should be able to detect that with a coolant system pressure test, though...
have to admit, I think you should be able to detect that with a coolant system pressure test, though...
Posted on 1/12/15 at 9:17 pm to AndyCBR
I have an 05 GMC 1500 with about 150k miles on it. Guess a couple of weeks ago it started overheating and I had to add coolant. Was a slower leak but now when I park it leaves a big puddle. It's gotten to where every 3 days or so I have to fill it up again. The water pump was replaced about 1-1/2 year and a half ago. Guess it's probably the head gasket?
Posted on 1/12/15 at 9:17 pm to Ambassador
Car B
Posted on 1/12/15 at 9:20 pm to Ambassador
quote:
Any recommendations for the West Monroe area?
Sorry no recommendations up there.
Try the outdoor board if you don't get any hits on the OT for a referral in that area.
Regardless I would try and find a diesel specialist and in my experience avoid the dealer unless they are known to be good from the locals.
Posted on 1/12/15 at 9:34 pm to Ambassador
Have a leak down test done
Posted on 1/12/15 at 9:36 pm to DownshiftAndFloorIt
I had the same issue with my 2004 duramax, it wound up being the injector cups leaking.
This post was edited on 1/12/15 at 11:00 pm
Posted on 1/12/15 at 9:55 pm to Ambassador
What year model?
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