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  1. 06-07 LBZ & LLY Duramax Powertrain
    I just had a coolant flush done about a hour or so ago, to make a long story short, guy i bought it off off had the oil cooler go out on him and he half assed the coolant flush so there was still oil in it. i don’t have time to do it myself and with it getting to the time of the year with 10...
  2. 2011-2016 (Non Powertrain)
    2013 2500HD. One of the coolant connections coming off the firewall failed and I lost many gallons of coolant. I replaced the clamp and coolant weeks ago but I cant keep my reservoir full. Every day my coolant level light comes on an I have to add coolant. I can't smell coolant nor can I find...
  3. Towing & Hauling
    Hello guys, I am currently dealing with a deflated upper radiator hose on a stock 2011 LML. Its deflated when cold but re-inflates when engine is at operating temp. I already changed the coolant reservoir cap and no difference noted. Engine doesn't overheat and coolant is not low. No leaks or...
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