6 spd auto shifting
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Thread: 6 spd auto shifting

  1. #1
    Handbrake Released gunner22's Avatar
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    6 spd auto shifting

    Has anyone contacted their dealer or GM about the Cruze shifting harshly or slowly? I have found a number of articles about the gasoline powered Cruze with the auto having harsh shifts under heavy accelaration and cold temperatures. I have been experiencing this with mine, but thought it was just having so few miles on it. Now I am not so sure.

    Here is an article from Australia declaring there is a fix back in July of 2009

    I plan to talk with my service manager about this next week. Just wondering if others have heard anything or approached anyone about this.
    My Car - 2011 Cruze LS: Silver, MANUAL, Connectivity, Spare, Mats.
    Wife's Car - 2009 Honda Fit Sport: 40 MPG Hatchback

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  3. #2
    World Rally Champion 70AARCUDA's Avatar
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    ...I've noticed "less-than-silky-smooth" shifts but attributed it to the "fuzzy-logic" learning-process the car computers go through as they track & learn how the owner drives.

    ...similar things occurred with our 2009 Pontiac (nee Toyota) Vibe.
    Last edited by 70AARCUDA; 12-02-2010 at 03:58 PM.
    2011 Chevrolet Cruze LTZ 1.4LT 6A
    2009 Pontiac Vibe 1.8L/SFI 4A
    2004 Pontiac Vibe 1.8L/MFI 4A

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  4. #3
    Handbrake Released gunner22's Avatar
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    I am hoping that the software is just learning, but I fear for the durability of the transmission with it shifting so eratically. How long did it take for your Vibe to 'learn' to shift smoothly?

    When the car is cold my 1-2 upshifts are very abrupt and my 2-3 upshifts are so slow that the car slows down before 3rd gear is picked up. Once warm it shifts reasonably well. I've had two cars with GM's 4 spd hydras. This 6 spd is disappointing if it can't shift like a ten year old 4 spd.
    My Car - 2011 Cruze LS: Silver, MANUAL, Connectivity, Spare, Mats.
    Wife's Car - 2009 Honda Fit Sport: 40 MPG Hatchback

  5. #4
    2nd Gear ChevyMgr's Avatar
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    The update for the thermostat also updates the TCM for shift quality. This may fix you up.
    Some things I know, some things I don't
    Current Rides:

    2010 Chevrolet Malibu
    2011 Equinox
    2012 Cruze LT
    2013 Cruze RS

  6. #5
    Handbrake Released gunner22's Avatar
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    Quote Originally Posted by ChevyMgr View Post
    The update for the thermostat also updates the TCM for shift quality. This may fix you up.
    Thank you! I will pass the TSB # on to my service manager when I get my strut noise attended to as well.

    Is this compatible with my car as it appears the thermostat update is for 1.4T cars and I have the n/a 1.8?
    Last edited by gunner22; 12-02-2010 at 04:46 PM.
    My Car - 2011 Cruze LS: Silver, MANUAL, Connectivity, Spare, Mats.
    Wife's Car - 2009 Honda Fit Sport: 40 MPG Hatchback

  7. #6
    2nd Gear ChevyMgr's Avatar
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    Quote Originally Posted by gunner22 View Post
    Thank you! I will pass the TSB # on to my service manager when I get my strut noise attended to as well.

    Is this compatible with my car as it appears the thermostat update is for 1.4T cars and I have the n/a 1.8?
    Give the last 8 of your VIN and I can tell you.
    Some things I know, some things I don't
    Current Rides:

    2010 Chevrolet Malibu
    2011 Equinox
    2012 Cruze LT
    2013 Cruze RS

  8. #7
    Handbrake Released gunner22's Avatar
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    Quote Originally Posted by ChevyMgr View Post
    Give the last 8 of your VIN and I can tell you.
    PM sent...
    My Car - 2011 Cruze LS: Silver, MANUAL, Connectivity, Spare, Mats.
    Wife's Car - 2009 Honda Fit Sport: 40 MPG Hatchback

  9. #8
    2nd Gear ChevyMgr's Avatar
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    Quote Originally Posted by gunner22 View Post
    PM sent...
    Yours does not have the thermostat update, but if you tell them what is happening they can look and see if there is a stand alone update for TCM to enhance transmission shifting.
    Some things I know, some things I don't
    Current Rides:

    2010 Chevrolet Malibu
    2011 Equinox
    2012 Cruze LT
    2013 Cruze RS

  10. #9
    Handbrake Released gunner22's Avatar
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    Excellent. I have to bring my HHR in for regular service next week. I plan to talk with the service manager and schedule a day they can just work on all the TSB's at once.

    Thanks again for the help.
    My Car - 2011 Cruze LS: Silver, MANUAL, Connectivity, Spare, Mats.
    Wife's Car - 2009 Honda Fit Sport: 40 MPG Hatchback

  11. #10
    2nd Gear ChevyMgr's Avatar
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    New TSB issued on transmission shifting complaints. See post #16

    http://www.cruzetalk.com/forum/25-se...-thread-2.html
    Some things I know, some things I don't
    Current Rides:

    2010 Chevrolet Malibu
    2011 Equinox
    2012 Cruze LT
    2013 Cruze RS

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