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coolant

  1. 06-07 LBZ & LLY Duramax Powertrain
    Hey guys, I got a 06 lbz with 248k on it. I was daily driving it and i checked the oil every 2 days and it was perfect everytime. I started driving my lb7 everyday so the lbz sat for week but the other day i decided to take it for a trip and checked the oil and it read like 2 inches past the...
  2. Maintenance
    So I have a leak in my lower coolant, hose and while I’m still waiting for the replacement o ring to come in I need some help with the reinstall,alongside the original o ring was this plastic circle unfortunately when they fell out I didn’t get to see the order they go in so I don’t know if that...
  3. 04.5-05 LLY Duramax Powertrain
    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...
  4. General Discussion
    Have a 2011 lml experiencing low coolant. First started after driving a couple hundred miles knowing the coolant level was where it needed to be. Gradually got worse over time, but no change in performance. Recently had a large drop in coolant but the truck had been sitting for a good while as...
  5. General Discussion
    Alright boys, winter is quite literally just about on our front sidewalks. It's going to be cold and miserable, blowing snow, iced up windows and crappy dirty roads etc. we all know how cold blooded our rigs are if you live where it's cold. Now I'm not talking a paper thin sheet of ice cold I'm...
  6. 04.5-05 LLY Duramax Powertrain
    I have had this truck for almost a year. 130K. please see picture of coolant leak. is that the oil pan? I don't have much experience and appreciate all replies. leak started off intermittent, now just dripping away.
  7. 06-07 LBZ & LLY Duramax Powertrain
    I've had to to add a 1/4 of a gallon of coolant to my truck twice in the past 2 years (both times in February). The last time the Check Coolant warning came I let the truck sit in 30 deg weather to cool down and I still couldn't remove the cap due to all the pressure behind it. I had to use...
  8. 01-04.5 LB7 Duramax Powertrain
    Alright I think i'm running a wild goose chase now. I just did headgaskets in my '02 (have been back together for 1 1/2 weeks now) and i think i'm still slowly using coolant. On a cold start up I'm still getting clouds of white smoke out of my exhaust. The coolant level has dropped slightly but...
  9. 911 Problems Forum
    I have a 2001 Silverado LB7 that doesn't want to keep the anti-freeze down. For some reason when I top it off (because that annoying light will stay on) it will hold it for a little while (usually no more than 5 miles) and then pukes some of it out causing the low coolant light to come back on...
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