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LS1 Transmission shift Problem

This is a discussion on LS1 Transmission shift Problem within the GTO forums, part of the Vehicle Specific category; Hi Guys I Stay in South Africa and drive a Chevrolet Lumina SS 2001 Gen III (LS1) model. Also known ...

  1. #1
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    2001 Chevrolet Lumina SS

    LS1 Transmission shift Problem

    Hi Guys

    I Stay in South Africa and drive a Chevrolet Lumina SS 2001 Gen III (LS1) model. Also known as Holden Comaro in Australia or Pontiac Gto in Usa.

    Ive got a transmission problem for 18 months now! Its an automatic transmission. Everytime i shift up from 2nd to 3rd gear the clutch slips, also happens when im cruising and then accelerate it kicks dows but the rev's goes way up and after a couple of seconds it changes when i ease off the throttle. I had the transmission fixed 3 times in 18 months, but the problems comes back everytime after just a view miles. These co called specialists cant seem to find the problem. They fitted new colenoid, clutch plates, changed the pistons, but the problem persists.

    Anyone with help please??

  2. #2
    cutting and welding mark21742's Avatar
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    I'd look at getting a more expensive torque converter that has a better/ bigger Lockup clutch...are you lots of debris on the tranny pan?

  3. #3
    Mustang Eater Ls_won's Avatar
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    Maroon
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    post some pictures of this car i am curious
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    Smiles for 9.5 Years cammed goat's Avatar
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    Phantom Black Metallic
    2004 GTO M6

    Stuck valve body in the trans?

  5. #5
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    Quote Originally Posted by mark21742 View Post
    I'd look at getting a more expensive torque converter that has a better/ bigger Lockup clutch...are you lots of debris on the tranny pan?
    There is no debris in pan and oil is clean
    The valve body was also checked


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