Symptom Chart
F Clutch
For F clutch operation,
REFER to: F Clutch (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, Description and Operation).
F Clutch
Condition | Possible Sources | Action |
F clutch does not apply | SSF is mechanically stuck OFF |
INSTALL a new solenoid. REFER to: Shift Solenoids (SS) (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, Removal and Installation). |
F clutch control valve stuck OFF |
DISASSEMBLE, CLEAN and INSPECT the F clutch
control valve. If the bore or valve is damaged, INSTALL a new main
control valve body. REFER to: Main Control Valve Body (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, Removal and Installation). |
|
F clutch latch valve stuck OFF |
DISASSEMBLE, CLEAN and INSPECT the F clutch
latch valve. If the bore or valve is damaged, INSTALL a new main control
valve body. REFER to: Main Control Valve Body (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, Removal and Installation). |
|
F clutch hydraulic circuit blocked/leaking |
DISASSEMBLE and INSPECT the main control
valve body and separator plate passages for debris, blockage and leaks.
CLEAN as necessary. REFER to: Main Control Valve Body (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, Removal and Installation). |
|
CARRY OUT the air pressure test on the F clutch. REFER to: Special Testing Procedures (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, Diagnosis and Testing). If a leak is detected, INSPECT the front support assembly, input shaft Teflon seals and F clutch piston seals for leaks. INSTALL new components as necessary. REFER to: Transmission (307-01B Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Overhaul). |
||
CDF clutch cylinder, clutch and planetary container, ring gear no. 4 |
DISASSEMBLE and INSPECT the CDF clutch
cylinder, the clutch and planetary container and ring gear no. 4 for
wear and damage. INSTALL new components as necessary. REFER to: Transmission (307-01B Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Overhaul). |
|
F clutch piston seals |
DISASSEMBLE and INSPECT the F clutch piston
seals for wear and damage. INSTALL new components as necessary. REFER to: Transmission (307-01B Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Overhaul). |
|
F clutch friction plates |
DISASSEMBLE and INSPECT the F clutch
friction and steel plates for wear and damage. INSTALL new components as
necessary. REFER to: Transmission (307-01B Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Overhaul). |
|
F clutch always applied | SSF mechanically stuck ON |
INSTALL a new solenoid. REFER to: Shift Solenoids (SS) (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, Removal and Installation). |
F clutch control valve stuck ON |
DISASSEMBLE, CLEAN and INSPECT the F clutch
control valve. If the bore or valve is damaged, INSTALL a new main
control valve body. REFER to: Main Control Valve Body (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, Removal and Installation). |
|
F clutch latch valve stuck ON |
DISASSEMBLE, CLEAN and INSPECT the F clutch
latch valve. If the bore or valve is damaged, INSTALL a new main control
valve body. REFER to: Main Control Valve Body (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, Removal and Installation). |
|
F clutch hydraulic circuit cross leaks |
DISASSEMBLE and INSPECT the main control
valve body and separator plate passages for cracks, warping and damage.
If damage is found, INSTALL a new main control valve body. REFER to: Main Control Valve Body (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, Removal and Installation). |
|
F clutch hub, clutch and planetary container, No.4 ring gear |
DISASSEMBLE and INSPECT the CDF clutch
cylinder, the clutch and planetary container and ring gear no. 4 for
wear and damage. INSTALL new components as necessary. REFER to: Transmission (307-01B Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Overhaul). |
|
F clutch piston return spring |
DISASSEMBLE and INSPECT the F clutch piston
return spring for damage. INSTALL new components as necessary. REFER to: Transmission (307-01B Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Overhaul). |
|
F clutch friction plates |
DISASSEMBLE and INSPECT the F clutch
friction and steel plates for wear and damage. INSTALL new components as
necessary. REFER to: Transmission (307-01B Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Overhaul). |
|
F clutch delayed/soft/slipping apply | Incorrect transmission strategy programmed into PCM/ TCM. |
CARRY OUT the Transmission Strategy Download and the Adaptive Learning Drive Cycle. REFER to: Transmission Strategy Download (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, General Procedures). REFER to: Adaptive Learning Drive Cycle (307-01B Automatic Transmission - 10-Speed Automatic Transmission – 10R80, General Procedures). |
Low line pressure |
CARRY OUT the line pressure test. If line
pressure is low, REFER to the Line Pressure Diagnosis Chart. REFER to: Special Testing Procedures (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, Diagnosis and Testing). |
|
SSF mechanically sticking |
|
|
F clutch control valve sticking |
|
|
F clutch latch valve sticking |
|
|
F clutch hydraulic circuits blocked/leaking |
DISASSEMBLE and INSPECT the main control
valve body and separator plate passages for debris, blockage and leaks.
CLEAN as necessary. REFER to: Main Control Valve Body (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, Removal and Installation). |
|
F clutch piston seals |
DISASSEMBLE and INSPECT the F clutch piston
seals for wear and damage. INSTALL new components as necessary. REFER to: Transmission (307-01B Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Overhaul). |
|
F clutch friction plates |
DISASSEMBLE and INSPECT the F clutch
friction and steel plates for wear and damage. INSTALL new components as
necessary. REFER to: Transmission (307-01B Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Overhaul). |
|
F clutch harsh apply | Incorrect transmission strategy programmed into PCM/ TCM. |
CARRY OUT the Transmission Strategy Download and the Adaptive Learning Drive Cycle. REFER to: Transmission Strategy Download (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, General Procedures). REFER to: Adaptive Learning Drive Cycle (307-01B Automatic Transmission - 10-Speed Automatic Transmission – 10R80, General Procedures). |
High line pressure |
CARRY OUT the line pressure test. If line
pressure is high, REFER to the Line Pressure Diagnosis Chart. REFER to: Special Testing Procedures (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, Diagnosis and Testing). |
|
SSF mechanically sticking |
|
|
F clutch control valve sticking |
|
|
F clutch latch valve sticking |
|
|
F clutch hydraulic circuit blocked/leaking |
DISASSEMBLE and INSPECT the main control
valve body and separator plate passages for debris, blockage and leaks.
CLEAN as necessary. REFER to: Main Control Valve Body (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, Removal and Installation). |
|
F clutch piston return spring |
DISASSEMBLE and INSPECT the F clutch piston
return spring for damage. INSTALL new components as necessary. REFER to: Transmission (307-01B Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Overhaul). |
|
F clutch friction plates |
DISASSEMBLE and INSPECT the F clutch
friction and steel plates for wear and damage. INSTALL new components as
necessary. REFER to: Transmission (307-01B Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Overhaul). |
WARNING: Position the seatbelt height adjuster so that the seatbelt rests across the middle of your shoulder. Failure to adjust the seatbelt correctly could reduce its effectiveness and increase the risk of injury in a crash.