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    Newbie here and need advice based on mileage

    I have an 05 tahoe 5.3l that my wife drives our kids around in. It's using about 3 quarts of coolant per month. I suspect it's the cracked head issue. It's got 180k+ on it and she drives about 30k miles a year. Should I replace engine or just heads? Vehicle is in pretty decent condition for the...

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