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Thread: GM ZL1 A10 T87A TCM 1st gear delete in Auto Mode

  1. 08-05-2023 #1
    JSH
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    GM ZL1 A10 T87A TCM 1st gear delete in Auto Mode

    Has anyone done an A10 T87A (or T93) TCM 1st gear delete in Auto? My 1st gear is deleted in Manual only.
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  2. 08-05-2023 #2
    paulsmithsr
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    I do
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  3. 08-05-2023 #3
    JSH
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    Quote Originally Posted by paulsmithsr View Post
    I do
    Then save me from all this time wasted trying to figure it out. Mine is a '20 ZL1 A10 with T83A TCM that's currently only programmed to delete first gear while in Manual, but I want it in Auto also. How much do you want for a copy?
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  4. 08-10-2023 #4
    STAGEUP
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    Set the whole row on the 1-2 shift mph shift schedules to "0".
    2009.5 PBM G8 GXP M6 W/Roof-Self tune, OBX LTs, Kooks axleback, LSA blower, cam,
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