Question about 2003 Hummer H2

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H2 transmission problem

H2 transmission has been changed recently with a brand new one. Also the information screen on the odometer is broken. Now the problem is, the automatic transmission doesn't shift by itself when driving, also the car wouldn't start if only trying from D. The only way to change gears is playing with the stick manually. Why would this happen? Is this somehow connected with the broken odometer screen?

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Hi
The screen will have nothing to do with it. I would however take the car back to the person that fixed it as this is most likely a fault they have made. things you can check yourself.

1 check the gearbox fluid is to the correct level
2 check the slave cylinder to see if there are any signs of damp around it

ask the place where you got it repaired to check the crank sensor,the slave cylinder, and the torque converter.

The toque converter may have been damaged when they fitted the new transmission, although these are funny parts and can just break down by them selves.
the torque converter is what turns the rev's in the power basically in converters the power to drive.

Hope this helps.

Regards
Dan

Posted on Feb 01, 2010

  • Dan Doherty
    Dan Doherty Feb 01, 2010

    Hi
    The screen will have nothing to do with it. I would however take the car back to the person that fixed it as this is most likely a fault they have made. things you can check yourself.

    1 check the gearbox fluid is to the correct level
    2 check the slave cylinder to see if there are any signs of damp around it

    ask the place where you got it repaired to check the crank sensor,the slave cylinder, and the torque converter.

    The toque converter may have been damaged when they fitted the new transmission, although these are funny parts and can just break down by them selves.
    the torque converter is what turns the rev's in the power basically in converters the power to drive.

    Hope this helps.

    Regards
    Dan


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