So I just finished putting new head gaskets in my 2005 lly. 183k miles and bone stock up until I bought it. When I bought the truck it had typical HG symptoms... black tank, bubbling coolant at cold start with cap off, blowing coolant out when driving etc. So I decided to buy the truck for low...

Hey all! I have a stock 2001 lb7 3500 dually. It blew a head gasket(!) about 11 months ago or so. I took it apart while leaving the cab on and the turbo on. Unfortunately a few days before I was going to assemble everything while waiting for parts in the mail, I found out I had Lymphoma and it...

Yes another post but after hours and hours of researching i'm still not entirely sure. My only sign so far is a somewhat stiff upper radiator hose and some pressure in coolant reservoir after a day or so of sitting. Is that normal? Replacing the radiator cap seemed to actually alleviate a lot of...

Hi all; sure hope I'm posting this in the right forum. Please LMK if I should move it elsewhere. First, about the truck: It's a 2015 3500 LT w/ ~295k miles. It has an EFI tow tune and EGR delete (done by previous owner) and a lift pump (done by me), otherwise its stock. Spent its previous...

Hello all , I have a 2018 3500hd dually, we use for hauling. truck has 169K miles on it now. have done every possible recommended maintenance on truck since new in 2018! followed everything per GM ! Recently about 3,000 miles ago had to replace turbo due to veins sticking! after turbo was done...

Hello, i’ve got an lbz duramax leaking about a gallon of coolant into the crank case in 5 minutes. I’ve been doing a bunch of research and have seen it can be the water pump and head gasket. i’d like to think it’s the water pump but it was just replaced 3,000 miles ago. I had a shop diagnose it...

i have a 06 lly for about a year now and been loving it, i noticed a slight bit of oil around the head gasket on the passenger side rear. checked all the symptoms for a blown head gasket and everything checks out okay and it looks to be traveling down from somewhere higher up. ive read some...

i have a 06 lly for about a year now and noticed a slight bit of oil around the head gasket on the passenger side rear. checked all the symptoms for a blown head gasket and everything checks out okay and it looks to be traveling down from somewhere higher up. ive read some people have seen the...

So a while back I parked my 2003 2500hd CCLB after having a generous amount of oil come out of my crank case breather tube. I stopped driving it right there and then. Did an oil change and rather than the usual 2.5gal out came 5gallons of really, really thin oil. My first thought was fuel in the...

So a while back I parked my 2003 2500hd CCLB after having a generous amount of oil come out of my crank case breather tube. I stopped driving it right there and then. Did an oil change and rather than the usual 2.5gal out came 5gallons of really, really thin oil. My first thought was fuel in the...

replacing my headgaskets and putting studs not sure If i should worry bout injectors or cp3 while I'm there was wondering if known to have issues an how the cp3 last I am getting the mbrp downpipe to put on 2 just dont know what else i have to do i know it needs the hoses on the fuel lines any...

I know this question has been posted in varius forms and forums, but i have added to many variables into the equation to immediately jump to a head gasket leak. The truck is a 4.5 2500hd gmc, mods that might have influence on the issue are, sinister egr delete, and banks intercoolers. The truck...

To all, I replaced head gaskets on 2004 LB7 back in August of 2011 and in the process discoverered the injector inlets had grit covering about 3/4 of the holes and i cleaned them out and went on with the job and once finished it had a loss of power but it turned out to be the valves weren't...

I got tonnes of pressure in the res tank and coolant is cool. Leak is coming from the front of motor on pass side infront of belt. Small leak and no smoke out pipe or water in oil or vise versa. Thinking about putting in a product called Irontight then running for awhile then changing the cap...