shifting

  1. P

    Hard 1-2 shifting

    I've had my 2013 SHO going on 2 years (153k miles) . Ever since I've had it, first to second gear shifts are usually harsh. The hard shifting doesn't begin until after everything is up to normal operating temp. The shifting isn't always harsh though. I've been getting an intermittent CEL for cat...
  2. jman1200

    Torque Converter?

    2010 SHO with 300k km (186k miles). A couple of months ago I started feeling a slight vibration during shifting, at low rpms. This vibration is now much more evident and present all the time. It happens at any gear and noticeable only when the engine is under 2000 rpm. If I floor it, I feel...
  3. BigStu123

    Sport Mode shifting

    Hey. I run GH tune and have just now noticing the shifting is different between sport mode and drive. With this said, I have gotten numerous tune revisions. One quick question. 1. Is there a way to get sport mode to go into 6th gear? I just had a tune that I used for a couple months and when I...

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