6-7 Shift
General fault detected during the 6-to-7 upshift event — slipping during the shift, gear-ratio overshoot, or shift completion timeout. Often a worn friction element on the 7th-gear side or a slow shift solenoid.
Affected components
- Clutch pack
- Shift solenoid
Common causes
- High likelihood: Worn 7th-gear friction element
Possible symptoms
- Check engine or transmission warning light on
- Harsh, delayed, or missing shifts
- Possible limp mode (locked in one gear)
- Slipping or shuddering during gear changes
Diagnostic notes
- The malfunction indicator lamp may illuminate
Sources
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.