2015 LTZ LFX 3.6 noise when accelerating

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Thread: 2015 LTZ LFX 3.6 noise when accelerating

  1. #1
    Walking
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    2015 LTZ LFX 3.6 noise when accelerating

    Just purchased a 2015 Impala Limited LTZ with a 3.6 engine 37,000 miles.
    When accelerating there is a knocking/ticking noise.
    The harder you accelerate the louder the noise.

    I was told this is normal.
    Have heard similar noise when driving a 2011 Impala 3.9

    Any help would be appreciated.

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    Re: 2015 LTZ LFX 3.6 noise when accelerating

    I own a car like you describe, and that's not normal. Did it make that noise when you test drove it before buying?

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    Re: 2015 LTZ LFX 3.6 noise when accelerating

    Actually it belongs to my daughter who just purchased it.
    As I said, I have heard this noise in a 2011 Impala 3.9 that belonged to a friend of mine. And also rode in a 2016 Lacrosse 3.6 that you could faintly hear the same noise. Not sure if knocking is the right word but it is an audible noise.

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    Re: 2015 LTZ LFX 3.6 noise when accelerating

    Parents have a 3.6L powered Buick. Makes no noise when accelerating. Just smooth power.

    Perhaps you are talking about the ticking common with DI motors?

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    Re: 2015 LTZ LFX 3.6 noise when accelerating

    Quote Originally Posted by member12 View Post
    Parents have a 3.6L powered Buick. Makes no noise when accelerating. Just smooth power.

    Perhaps you are talking about the ticking common with DI motors?

    I also have a 2015 LTZ V6 but only have 8k miles. No noise.

    Try a tank of hi test (top tier gas) and add a bottle of Chevron Techron

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