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6l80

  1. GM Powertrain
    Hello Everyone, The transmission on my 08 Yukon XL Denali is finally showing its age. Reverse has been slipping for a while but can still push her around on level ground. A couple of days ago my wife was driving the kids home from town and it acted like it went into limp. When I got home and...
  2. GM Powertrain
    howdy folks, the tired 4.8 and 4l60 in my 03 sierra is looking mighty fine for a drivetrain swap, what does it realistically take to do a gen 4 swap with a 6l80/6l90 and to be able to have someone who doesn't know anything about the truck feel like its a regular truck? I'm so sick and tired of...
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