2005 Duramax, Head Gasket? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**Nima** · 04-28-2022, 10:03 AM

Hi:

I am the original owner of this truck with just 115,000 miles on it. Yesterday, on my to work, it gave me low coolant level sign. Truck ran fine with temp never exceeded 180 degree (that is my normal temp since I have V2 mod on it). I had the heather for a short time and it was blowing warm air as well.
I parked the truck at work and after about 10 hours or so, when I wanted to head home, I thought to check the coolant level. Since the reservoir looked dirty and I couldn't see inside very well, I tried to open the cap up. Boy! it was tight! When I manage to open it, some coolant puked out of it. I bought a gallon of Dex-cool, top it off (got about 1/2 gallon) and drove home with no issue. Parked it over night, checked the upper radiator hose, it is soft and there is no coolant leak. I also don't really see any white smoke on start up.
So, I have been reading a lot and it seems most people pointing at head gasket. I have an edge tuner on this truck which has always been set at level one, nothing crazy.
I plan to change the reservoir cap to see if that is the issue. Any other ideas?
The EGR has been blocked on this truck from 1st year.
Thanks

04-28-2022, 10:03 AM	#1
Nima Blue 67 Join Date: Apr 2004 Location: Western WA Posts: 1,174	2005 Duramax, Head Gasket? Hi: I am the original owner of this truck with just 115,000 miles on it. Yesterday, on my to work, it gave me low coolant level sign. Truck ran fine with temp never exceeded 180 degree (that is my normal temp since I have V2 mod on it). I had the heather for a short time and it was blowing warm air as well. I parked the truck at work and after about 10 hours or so, when I wanted to head home, I thought to check the coolant level. Since the reservoir looked dirty and I couldn't see inside very well, I tried to open the cap up. Boy! it was tight! When I manage to open it, some coolant puked out of it. I bought a gallon of Dex-cool, top it off (got about 1/2 gallon) and drove home with no issue. Parked it over night, checked the upper radiator hose, it is soft and there is no coolant leak. I also don't really see any white smoke on start up. So, I have been reading a lot and it seems most people pointing at head gasket. I have an edge tuner on this truck which has always been set at level one, nothing crazy. I plan to change the reservoir cap to see if that is the issue. Any other ideas? The EGR has been blocked on this truck from 1st year. Thanks __________________ 1953 GMC 3/4 ton: current project 1967 C20: 5.3 voretc with T5 conversion, 4 wheel 8 lug disc brake 1972 Nova: my 4 door sport sedan! 5.3 voretc + T5 conversion. drivable project, FUN!! 1979 Camaro Z28: 5.3 vortec conversion with build TH350: drivable project, Fun to drive 1992 Camaro RS convertible (Z28 clone): 5.3 conversion with build T5: on going project 2005 Silverado 2500, 4x4 Duramax, original owner



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