Transmission Control Systems: Technical Service Bulletins
- Customer Interest
- A/T - 1-2 or 2-3 Slip/Flare, Launch Shudder & DTC P1870
- 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
- A/T - Engine Speed Flare During Part Throttle Downshift
- A/T - Upshift Flare/No 3rd or 4th/Launch Shudder
- Drivetrain - Slow Or No Engagement of Front Axle
- By Symptom
- Customer Interest
- A/T - 1-2 or 2-3 Slip/Flare, Launch Shudder & DTC P1870
- 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
- A/T - Engine Speed Flare During Part Throttle Downshift
- A/T - Upshift Flare/No 3rd or 4th/Launch Shudder
- Drivetrain - Slow Or No Engagement of Front Axle
- Erratic Shifting
- Hard Shifting
- Hunting-Surging
- No shift/Incorrect gear engagement
- Slipping
- Sticking/Binding
- Customer Interest
- All Technical Service Bulletins
- A/T - Revised Diagnostic Information
- Electronic Transfer Case Controls - Revised DTC Chart
- Transfer Case Controls - Corrected Terminal Call-out
- A/T - 1-2 or 2-3 Slip/Flare, Launch Shudder & DTC P1870
- 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 - Engine Speed Flare During Part Throttle Downshift
- A/T - Park/Neutral Switch Connector Cannot Be Removed
- A/T - Upshift Flare/No 3rd or 4th/Launch Shudder
- Drivetrain - Transfer Case Control Module Replacement
- Drivetrain - Slow Or No Engagement of Front Axle
- Drivetrain - Updated Transfer Case Speed Sensor Conn.