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  1. #1

    Default 4.8 engine problems?

    Hello All,

    I own a 2005 Express 3500 ext. with the 4.8 engine. My truck has 143k miles on it. It runs good, but I just wanted to know if there is any problems that I should be aware of as I put more miles on it? Thanks.

    Joe Flash

  2. #2


    I used to drive that same van, it was a company van. I put 150k on it and never had a problem. I quit the job, so I can't say if anything ever happened with it.
    2008 GMC Sierra 2500HD Ex. Cab, Fire Red, 6.6L Duramax LMM Equipped with UTG Rocker Pods

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  3. #3


    Hi Scott,

    Thanks for the response. Maybe I will give that Amsoil a try for my high mileage engine.

    Joe Flash

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