Transmission Control Systems: Technical Service Bulletins

• Customer Interest
  • A/T - 4L60-E Harsh 1-2 Gear Upshift/MIL/SES/CEL ON
  • A/T - Loss of 4th Gear/Busy 3-4 Shifting/TCC Cycling
• By Symptom
  • Customer Interest
    • A/T - 4L60-E Harsh 1-2 Gear Upshift/MIL/SES/CEL ON
    • A/T - Loss of 4th Gear/Busy 3-4 Shifting/TCC Cycling
  • Erratic Shifting
    • A/T - Loss of 4th Gear/Busy 3-4 Shifting/TCC Cycling
  • Hard Shifting
    • A/T - 4L60-E Harsh 1-2 Gear Upshift/MIL/SES/CEL ON
  • No shift/Incorrect gear engagement
    • A/T - Loss of 4th Gear/Busy 3-4 Shifting/TCC Cycling
  • Sticking/Binding
    • A/T - Park/Neutral Switch Connector Cannot Be Removed
• All Technical Service Bulletins
  • A/T - Revised Diagnostic Procedural Charts
  • A/T Controls - Revised Text for all DTC Tables
  • A/T - 4L60-E Harsh 1-2 Gear Upshift/MIL/SES/CEL ON
  • A/T - Shift Solenoid Update
  • A/T - Loss of 4th Gear/Busy 3-4 Shifting/TCC Cycling
  • A/T - Park/Neutral Switch Connector Cannot Be Removed