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Cadillac ATS Technical Discussion Forum Discussion, 2.0 auto hesitation in Cadillac ATS Discussion Forums; I have a 2.0 auto and I notice when taking off from a light it will hesitate from the 1,2 ...
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    bluhaven's Avatar
    bluhaven is offline Cadillac Owners Member
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    2.0 auto hesitation

    I have a 2.0 auto and I notice when taking off from a light it will hesitate from the 1,2 shift, it almost feels like a manual trans.shifting, I can also notice it even more so if your slowing down for a turn and then while giving it throttle it well hesitate, rpm's do not climb, just like bogging with a carburated car. This is happening at part throttle. Anyone else notice this? Within the 1st 90 days my dealer wants us to bring the car in for any concerns so we'll see what they have to say at the time.

    Kevin

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    Bertha D Blues is offline Cadillac Owners Fanatic
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    Re: 2.0 auto hesitation

    Same engine and trans here. No hesitation for me.

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    Re: 2.0 auto hesitation

    Yes I do feel it sometimes as well happen today when I went to change lanes and accelerated there was a hesitantion.

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    blue_skies is offline Cadillac Owners Fanatic
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    Re: 2.0 auto hesitation

    Quote Originally Posted by bluhaven View Post
    I have a 2.0 auto and I notice when taking off from a light it will hesitate from the 1,2 shift, it almost feels like a manual trans.shifting, I can also notice it even more so if your slowing down for a turn and then while giving it throttle it well hesitate, rpm's do not climb, just like bogging with a carburated car. This is happening at part throttle. Anyone else notice this? Within the 1st 90 days my dealer wants us to bring the car in for any concerns so we'll see what they have to say at the time.

    Kevin
    Try a more aggressive right foot. This may just be the PAL algorithm. I have noticed that it responds very well, if your foot is aggressive. It is also sensitive to centrifugal forces, as in cornering.

    If you drive 'sedated', it goes into some kind of fuel saving mode.

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    bluhaven's Avatar
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    Thread Starter

    Re: 2.0 auto hesitation

    I know with more throttle it won't do this, but I don't think it should be doing this at part throttle. I've never driven anything that has this feeling. It seems as though it needs a different tune for the trans or engine, or both. What is PAL?

    Kevin

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    blue_skies is offline Cadillac Owners Fanatic
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    Re: 2.0 auto hesitation

    Quote Originally Posted by bluhaven View Post
    I know with more throttle it won't do this, but I don't think it should be doing this at part throttle. I've never driven anything that has this feeling. It seems as though it needs a different tune for the trans or engine, or both. What is PAL?

    Kevin
    Performance Algorithm Liftfoot.

    It is GM's fifth(?) attempt in automating throttle behavior based on user and car input.

    It works incredibly well, if it knows that you want to drive spiritedly. If not, it will translate throttle input into fuel efficient behavior, IMO.

    It also learns over time (each drive). I have a stop sign near where I live, and very much drive the same each day, accelerating from the stop and then lifting my foot when I reach the speed limit. On certain days the car behaves 'normal', on other days the car keeps the rpm at 4k, staying in the lower gearing. It seems to correlate to how I was driving the 20min prior to getting there.

    If the car ever feels sluggish, simply 'floor' it repeatedly, and the algorithm will take hold and the car begins to almost anticipate what you want. No need for paddle shifters.

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    bluhaven's Avatar
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    Re: 2.0 auto hesitation

    If that's what PAL is, that sucks, let me drive it the way I want. Maybe when HP Tuners has support for this vehicle that can be tuned out.

    Kevin

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    Quote Originally Posted by bluhaven
    Maybe when HP Tuners has support for this vehicle that can be tuned out.

    Kevin
    TriFecta Tune

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    bluhaven's Avatar
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    Re: 2.0 auto hesitation

    Quote Originally Posted by ewired View Post
    TriFecta Tune
    I'll wait for HP Tuners.

    Kevin

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    Re: 2.0 auto hesitation

    Quote Originally Posted by bluhaven View Post
    ...Within the 1st 90 days my dealer wants us to bring the car in for any concerns so we'll see what they have to say at the time...
    Kevin, I realize you just wrote about waiting for a tune, but I wanted to let you know I'm here if you would like assistance working with your dealership at any point. Please email me at Katie_Lucille@gmexpert.com, and I can research concerns for you and/or contact your dealer as well.

    Best,

    Katie
    Cadillac Customer Service

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    bluhaven's Avatar
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    Re: 2.0 auto hesitation

    Quote Originally Posted by Cadillac Cust Svc View Post
    Kevin, I realize you just wrote about waiting for a tune, but I wanted to let you know I'm here if you would like assistance working with your dealership at any point. Please email me at Katie_Lucille@gmexpert.com, and I can research concerns for you and/or contact your dealer as well.

    Best,

    Katie
    Cadillac Customer Service
    I'm not really looking to tune the car, it seems as though that is the issue with the car and not a mechanical issue. When I take it in for service I'll let the dealership know.

    Kevin

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    Re: 2.0 auto hesitation

    Thanks for the clarification, Kevin! I'm looking forward to your updates, and please email me in the meantime if you have any further questions along the way.

    Best,

    Katie
    Cadillac Customer Service

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    Rozay619 is offline Cadillac Owners Member
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    Re: 2.0 auto hesitation

    I am having the same issue, usually when i am slowing down to stop and then slight acceleration happens between 15-19 mph. I took the ATS to the dealer yesterday, hopefully they can have an answer or GM can find a fix for it!! It's anoying as hell!!!

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    bluhaven's Avatar
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    Re: 2.0 auto hesitation

    Quote Originally Posted by Rozay619 View Post
    I am having the same issue, usually when i am slowing down to stop and then slight acceleration happens between 15-19 mph. I took the ATS to the dealer yesterday, hopefully they can have an answer or GM can find a fix for it!! It's anoying as hell!!!
    I'll be interested to see what they say and do.

    Kevin

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    Rozay619 is offline Cadillac Owners Member
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    Re: 2.0 auto hesitation

    Short update if you want to call it that!! Dealership called me and they are keeping the car over the weekend. The service guy told me the tech is not sure how to resolve the issues?!?! Hopefully another update will come on Monday!! Enjoy your weekend guys!

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