6L80 Troubleshooting PT1 - Fundamentals and Range Charts
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6L80 Troubleshooting PT1 - Fundamentals and Range Charts
Welcome to the General Motors 6L transmission diagnosis and troubleshooting series, including the 6L45, 6L50, 6L80 and 6L90. I will provide information on how to diagnose your 6L transmission's drivability symptoms so that you can get some insight into what's happening inside the unit so you can determine next steps. In Part One (PT1), I ...
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