Thread: 2006 GXP downshift issue

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  1. #21 Re: 2006 GXP downshift issue 
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    Factory fluid on your GXP should be Dex VI synthetic anyway. These transmissions should have never been put behind a V8, do what you can tranny cooler , shift kit and good maintenance.
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  2. #22 Re: 2006 GXP downshift issue 
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    The Lubegard product did no good. How do I find someone who can disable DOD in the PCM?
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