my wife's Yukon with the 5.3L burns a qt every oil change and its a 2008 model..... f'n crazy on a newer truck! Pull your O2 sensor and see if it's fouled or dirty as it could be making it worse by throwing off the fuel ratio....
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Kyle
USMC 2003-2009
"The only thing necessary for the triumph of evil is for good men to do nothing."
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