Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Engagement Concerns: Delayed/Soft Forward and Reverse
| Possible Component | Reference/Action |
|---|---|
| 209 - ELECTRICAL ROUTINE | |
| Powertrain Control System | - |
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| - |
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| - |
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| 309 - HYDRAULIC/MECHANICAL ROUTINE | |
| Transmission Fluid | - |
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| Incorrect Pressures | - |
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| Main Control | - |
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| Pump Assembly | - |
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Shift Concerns: Some/All Shifts Missing (AUTOMATIC MODE ONLY)
| Possible Component | Reference/Action |
|---|---|
| 210 - ELECTRICAL ROUTINE | |
| Powertrain Control System | - |
|
|
| - |
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| - |
|
| 310 - HYDRAULIC/MECHANICAL ROUTINE | |
| Some Shifts Missing ONLY | - |
| - |
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| - |
|
| Transmission Fluid | - |
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| Selector Lever Cable/ TR Sensor | - |
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| Incorrect Pressures | - |
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| Main Control | - |
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| Pump Assembly | - |
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| Direct Clutch Assembly | - |
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| Forward Clutch Assembly | - |
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| One-Way Clutch (OWC) | - |
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| Servo | - |
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Shift Concerns: Timing Concerns - Early/Late
| Possible Component | Reference/Action |
|---|---|
| 211 - ELECTRICAL ROUTINE | |
| Powertrain Control System | - |
|
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| - |
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| - |
|
| 311 - HYDRAULIC/MECHANICAL ROUTINE | |
| Some Shifts Early/Late ONLY | - |
| - |
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| - |
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| Transmission Fluid | - |
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| Main Control | - |
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| Servo | - |
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| Band | - |
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Shift Concerns: Timing Concerns - Erratic/Hunting
| Possible Component | Reference/Action |
|---|---|
| 212 - ELECTRICAL ROUTINE | |
| Powertrain Control System | - |
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| - |
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| 312 - HYDRAULIC/MECHANICAL ROUTINE | |
| Transmission Fluid | - |
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| Main Control | - |
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| Further Diagnosis | - |
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Shift Concerns: Feel - Soft/Slipping
| Possible Component | Reference/Action |
|---|---|
| 213 - ELECTRICAL ROUTINE | |
| Powertrain Control System | - |
|
|
| - |
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| - |
|
| 313 - HYDRAULIC/MECHANICAL ROUTINE | |
| Some Shifts Soft/Slipping ONLY | - |
| - |
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| - |
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| Transmission Fluid | - |
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| Incorrect Pressures | - |
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| Main Control | - |
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| Pump Assembly | - |
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| Intermediate Servo | - |
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| Intermediate Band | - |
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| Direct Clutch Assembly | - |
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| Forward Clutch Assembly | - |
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| Case | - |
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Shift Concerns: Feel - Harsh (Some/All)
| Possible Component | Reference/Action |
|---|---|
| 214 - ELECTRICAL ROUTINE | |
| Powertrain Control System | - |
|
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| - |
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| - |
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| 314 - HYDRAULIC/MECHANICAL ROUTINE | |
| Some Shifts Harsh ONLY | - |
| - |
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| - |
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| Incorrect Pressures | - |
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| Main Control | - |
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| Input Shaft | - |
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| Servo | - |
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| Band | - |
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| Forward Clutch Assembly | - |
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| Final Drive Gears and Differential | - |
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| Case | - |
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Shift Concerns: No 1st Gear in Drive, Engages In Higher Gear
| Possible Component | Reference/Action |
|---|---|
| 215 - ELECTRICAL ROUTINE | |
| Powertrain Control System | - |
|
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| - |
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| - |
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| 315 - HYDRAULIC/MECHANICAL ROUTINE | |
| Incorrect Pressures | - |
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| Main Control | - |
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| Low One-Way Clutch (OWC) | - |
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Shift Concerns: No 1st Gear in Manual 1st
| Possible Component | Reference/Action |
|---|---|
| 216 - ELECTRICAL ROUTINE | |
| Powertrain Control System | - |
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| - |
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| 316 - HYDRAULIC/MECHANICAL ROUTINE | |
| Incorrect Pressures | - |
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| Main Control | - |
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| Low/Reverse Clutch Assembly | - |
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| OD Planetary Assembly | - |
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Shift Concerns: No Manual 2nd Gear
| Possible Component | Reference/Action |
|---|---|
| 217 - ELECTRICAL ROUTINE | |
| Powertrain Control System | - |
|
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| - |
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| - |
|
| 317 - HYDRAULIC/MECHANICAL ROUTINE | |
| Incorrect Pressures | - |
|
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| Main Control | - |
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| Servo | - |
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| Band | - |
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| Low/Direct One-Way Clutch (OWC) | - |
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Shift Concern: No 1-2 Shift
| Possible Component | Reference/Action |
|---|---|
| 220 - ELECTRICAL ROUTINE | |
| Powertrain Control System | - |
|
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| - |
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| - |
|
| 320 - HYDRAULIC/MECHANICAL ROUTINE | |
| Transmission Fluid | - |
|
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| Incorrect Pressures | - |
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| Main Control | - |
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| Servo | - |
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| Band | - |
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| Overdrive (O/D) Planetary Assembly | - |
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| Forward Clutch Assembly | - |
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Shift Concern: No 2-3 Shift
| Possible Component | Reference/Action |
|---|---|
| 221 - ELECTRICAL ROUTINE | |
| Powertrain Control System | - |
|
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| - |
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| - |
|
| 321 - HYDRAULIC/MECHANICAL ROUTINE | |
| Incorrect Pressures | - |
|
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| Main Control | - |
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| Servo | - |
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| Forward Clutch Assembly | - |
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| Intermediate Clutch Assembly | - |
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Shift Concern: No 3-4 Shift
| Possible Component | Reference/Action |
|---|---|
| 222 - ELECTRICAL ROUTINE | |
| Powertrain Control System | - |
|
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| - |
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| - |
|
| 322 - HYDRAULIC/MECHANICAL ROUTINE | |
| Incorrect Pressures | - |
|
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| Main Control | - |
|
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| Forward Clutch Assembly | - |
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| Servo | - |
|
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Shift Concern: No 4-3 Shift
| Possible Component | Reference/Action |
|---|---|
| 223 - ELECTRICAL ROUTINE | |
| Powertrain Control System | - |
|
|
| - |
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| - |
|
| 323 - HYDRAULIC/MECHANICAL ROUTINE | |
| Incorrect Pressures | - |
|
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| Main Control | - |
|
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| Forward Clutch Assembly | - |
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| Servo | - |
|
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Shift Concern: No 3-2 Shift
| Possible Component | Reference/Action |
|---|---|
| 224 - ELECTRICAL ROUTINE | |
| Powertrain Control System | - |
|
|
| - |
|
| - |
|
| 324 - HYDRAULIC/MECHANICAL ROUTINE | |
| Incorrect Pressures | - |
|
|
| Main Control | - |
|
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| Servo | - |
|
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| Band | - |
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| Direct Clutch Assembly | - |
|
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Shift Concern: No 2-1 Shift
| Possible Component | Reference/Action |
|---|---|
| 225 - ELECTRICAL ROUTINE | |
| Powertrain Control System | - |
|
|
| - |
|
| - |
|
| 325 - HYDRAULIC/MECHANICAL ROUTINE | |
| Incorrect Pressures | - |
|
|
| Main Control | - |
|
|
|
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|
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| One-Way Clutch (OWC) | - |
|
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| Band | - |
|
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Shift Concern: Soft/Slipping 1-2
| Possible Component | Reference/Action |
|---|---|
| 226 - ELECTRICAL ROUTINE | |
| Incorrect Pressures | - |
|
|
| - |
|
| - |
|
| 326 - HYDRAULIC/MECHANICAL ROUTINE | |
| Transmission Fluid | - |
|
|
|
|
| Incorrect Pressures | - |
|
|
| Main Control | - |
|
|
|
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|
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|
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| Servo | - |
|
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| Band | - |
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Shift Concern: Soft/Slipping 2-3
| Possible Component | Reference/Action |
|---|---|
| 227 - ELECTRICAL ROUTINE | |
| Powertrain Control System | - |
|
|
| - |
|
| - |
|
| 327 - HYDRAULIC/MECHANICAL ROUTINE | |
| Incorrect Pressures | - |
|
|
| Main Control | - |
|
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| Servo | - |
|
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| Band | - |
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| Direct Clutch Assembly | - |
|
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Shift Concern: Soft/Slipping 3-4
| Possible Component | Reference/Action |
|---|---|
| 228 - ELECTRICAL ROUTINE | |
| Powertrain Control System | - |
|
|
| - |
|
| - |
|
| 328 - HYDRAULIC/MECHANICAL ROUTINE | |
| Incorrect Pressures | - |
|
|
| Main Control | - |
|
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| Forward Clutch Assembly | - |
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| Servo | - |
|
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| Band | - |
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Shift Concern: Soft/Slipping 4-3
| Possible Component | Reference/Action |
|---|---|
| 229 - ELECTRICAL ROUTINE | |
| Powertrain Control System | - |
|
|
| - |
|
| - |
|
| 329 - HYDRAULIC/MECHANICAL ROUTINE | |
| Incorrect Pressures | - |
|
|
| Main Control | - |
|
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| Forward Clutch Assembly | - |
|
|
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| Servo | - |
|
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Shift Concern: Soft/Slipping 3-2
| Possible Component | Reference/Action |
|---|---|
| 230 - ELECTRICAL ROUTINE | |
| Powertrain Control System | - |
|
|
| - |
|
| - |
|
| 330 - HYDRAULIC/MECHANICAL ROUTINE | |
| Incorrect Pressures | - |
|
|
| Main Control | - |
|
|
|
|
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|
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| Servo | - |
|
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| Band | - |
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Shift Concern: Soft/Slipping 2-1
| Possible Component | Reference/Action |
|---|---|
| 231 - ELECTRICAL ROUTINE | |
| Powertrain Control System | - |
|
|
| - |
|
| 331 - HYDRAULIC/MECHANICAL ROUTINE | |
| Incorrect Pressures | - |
|
|
| Main Control | - |
|
|
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| Servo | - |
|
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| Band | - |
|
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Shift Concern: Harsh 1-2 Shift
| Possible Component | Reference/Action |
|---|---|
| 232 - ELECTRICAL ROUTINE | |
| Powertrain Control System | - |
|
|
| - |
|
| - |
|
| 332 - HYDRAULIC/MECHANICAL ROUTINE | |
| Incorrect Pressures | - |
|
|
| Main Control | - |
|
|
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| Servo | - |
|
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| Band | - |
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Shift Concern: Harsh 2-3 Shift
| Possible Component | Reference/Action |
|---|---|
| 233 - ELECTRICAL ROUTINE | |
| Powertrain Control System | - |
|
|
| - |
|
| - |
|
| 333 - HYDRAULIC/MECHANICAL ROUTINE | |
| Incorrect Pressures | - |
|
|
| Main Control | - |
|
|
|
|
|
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|
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| Direct Clutch Assembly | - |
|
|
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|
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| Servo | - |
|
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| Band | - |
|
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Shift Concern: Harsh 3-4 Shift
| Possible Component | Reference/Action |
|---|---|
| 234 - ELECTRICAL ROUTINE | |
| Powertrain Control System | - |
|
|
| - |
|
| - |
|
| 334 - HYDRAULIC/MECHANICAL ROUTINE | |
| Incorrect Pressures | - |
|
|
| Main Control | - |
|
|
|
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| Direct Clutch Assembly | - |
|
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| Forward Clutch Assembly | - - |
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Shift Concern: Harsh 4-3 Shift
| Possible Component | Reference/Action |
|---|---|
| 235 - ELECTRICAL ROUTINE | |
| Powertrain Control System | - |
|
|
| - |
|
| - |
|
| 335 - HYDRAULIC/MECHANICAL ROUTINE | |
| Incorrect Pressures | - |
|
|
| Main Control | - |
|
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| Forward Clutch Assembly | - |
|
|
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| Servo | - |
|
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| Band | - |
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Shift Concern: Harsh 3-2 Shift
| Possible Component | Reference/Action |
|---|---|
| 236 - ELECTRICAL ROUTINE | |
| Powertrain Control System | - |
|
|
| - |
|
| - |
|
| 336 - HYDRAULIC/MECHANICAL ROUTINE | |
| Incorrect Pressures | - |
|
|
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| Servo | - |
|
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| Band | - |
|
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| Direct Clutch Assembly | - |
|
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Shift Concern: Harsh 2-1 Shift
| Possible Component | Reference/Action |
|---|---|
| 237 - ELECTRICAL ROUTINE | |
| Powertrain Control System | - |
|
|
| - |
|
| - |
|
| 337 - HYDRAULIC/MECHANICAL ROUTINE | |
| Incorrect Pressures | - |
|
|
| Main Control | - |
|
|
|
|
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| One-Way Clutch | - |
|
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| Servo | - |
|
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| Band | - |
|
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|
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|
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Torque Converter Clutch Operation Concerns: Does Not Apply
| Possible Component | Reference/Action |
|---|---|
| 240 - ELECTRICAL ROUTINE | |
| Powertrain Control System | - |
|
|
| - |
|
| - |
|
| 340 - HYDRAULIC/MECHANICAL ROUTINE | |
| Incorrect Pressures | - |
|
|
| Main Control | - |
|
|
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| Pump Assembly | - |
|
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| Torque Converter Assembly | - |
|
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| - |
|
Torque Converter Operation Concerns: Always Applied/Stalls Vehicle
| Possible Component | Reference/Action |
|---|---|
| 241 - ELECTRICAL ROUTINE | |
| Powertrain Control System | - |
|
|
| - |
|
| - |
|
| 341 - HYDRAULIC/MECHANICAL ROUTINE | |
| Main Control | - |
|
|
|
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|
|
| Low One-Way Clutch | - |
|
|
| Torque Converter Assembly | - |
|
|
| - |
|
Torque Converter Clutch Concerns: Cycling/Shudder/Chatter
| Possible Component | Reference/Action |
|---|---|
| 242 - ELECTRICAL ROUTINE | |
| Powertrain Control System | - |
|
|
| - |
|
| - |
|
| 342 - HYDRAULIC/MECHANICAL ROUTINE | |
| Transmission Fluid | - |
|
|
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| Main Control | - |
|
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| Torque Converter Assembly | - |
|
|
Other Concerns: Selector Lever Efforts High
| Possible Component | Reference/Action |
|---|---|
| 251 - ELECTRICAL ROUTINE | |
| Powertrain Control System | - |
|
|
| - |
|
| - |
|
| 351 - HYDRAULIC/MECHANICAL ROUTINE | |
| Selector Lever Cable/ TR Sensor | - |
|
|
| - |
|
| Main Control | - |
|
|
| Case | - |
|
|
|
|
Other Concerns: External Leaks
| Possible Component | Reference/Action |
|---|---|
| 252 - ELECTRICAL ROUTINE | |
| Powertrain Control System | - |
|
|
| 352 - HYDRAULIC/MECHANICAL ROUTINE | |
| Transmission Fluid | - |
|
|
|
|
| Case | - |
|
|
| Seal/Gaskets | - |
|
|
| - |
|
Other Concerns: Poor Vehicle Performance
| Possible Component | Reference/Action |
|---|---|
| 253 - ELECTRICAL ROUTINE | |
| Powertrain Control System | - |
|
|
| - |
|
| - |
|
| 353 - HYDRAULIC/MECHANICAL ROUTINE | |
| Transmission Fluid | - |
|
|
|
|
| Input Shaft | - |
|
|
| Forward Clutch Assembly | - |
|
|
|
|
|
|
|
|
| Torque Converter Assembly | - |
|
|
| - |
|
|
|
Other Concerns: Noise/Vibration - Forward or Reverse
| Possible Component | Reference/Action |
|---|---|
| 254 - ELECTRICAL ROUTINE | |
| Powertrain Control System | - |
|
|
| - |
|
| - |
|
| 354 - HYDRAULIC/MECHANICAL ROUTINE | |
| Pump Assembly | - |
|
|
|
|
|
|
| Flex Plate or Adapter Plate | - |
|
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|
|
|
|
| One-Way Clutch (OWC) | - |
|
|
| Friction Elements | - |
|
|
|
|
| Planetary Gear Set | - |
|
|
|
|
| Transmission Fluid | - |
|
|
|
|
| Transmission Fluid Filter | - |
|
|
| Torque Converter | - |
|
|
| Transaxle Support Insulator | - |
|
|
| Differential Ring and Pinion | - |
|
|
|
|
| Main Control Assembly | - |
|
|
|
|
| Transaxle Filler Tube | - |
|
|
Other Concerns: Engine Will Not Crank
| Possible Component | Reference/Action |
|---|---|
| 255 - ELECTRICAL ROUTINE | |
| Powertrain Control System | - |
|
|
| - |
|
| - |
|
| 355 - HYDRAULIC/MECHANICAL ROUTINE | |
| Selector Lever Cable/Transmission Range (TR) Sensor | - |
|
|
| - |
|
| Flex Plate or Adapter Plate | - |
|
|
Other Concerns: No Park Range
| Possible Component | Reference/Action |
|---|---|
| 256 - ELECTRICAL ROUTINE | |
| Powertrain Control System |
|
| 356 - HYDRAULIC/MECHANICAL ROUTINE | |
| Selector Lever Cable/Transmission Range (TR) Sensor | - |
|
|
| - |
|
| Case | - |
|
|
|
|
| Park System | - |
|
|
|
|
Other Concerns: Overheating
| Possible Component | Reference/Action |
|---|---|
| 257 - ELECTRICAL ROUTINE | |
| Powertrain Control System | - |
|
|
| - |
|
| - |
|
| 357 - HYDRAULIC/MECHANICAL ROUTINE | |
| Transmission Fluid | - |
|
|
|
|
| Incorrect Pressures | - |
|
|
| Main Control | - |
|
|
|
|
|
|
|
|
| Pump Assembly | - |
|
|
|
|
|
|
| Case | - |
|
|
| Torque Converter Assembly | - |
|
|
| Other | - |
|
|
|
|
|
|
Other Concerns: No Engine Braking in Manual 1
| Possible Component | Reference/Action |
|---|---|
| 259 - ELECTRICAL ROUTINE | |
| Powertrain Control System | - |
|
|
| - |
|
| - |
|
| 359 - HYDRAULIC/MECHANICAL ROUTINE | |
| Transmission Fluid | - |
|
|
|
|
| Incorrect Pressures | - |
|
|
| Pump Assembly | - |
|
|
|
|
|
|
| Low/Reverse Clutch Assembly | - |
|
|
|
|
|
|
|
|
Other Concerns: Fluid Venting or Foaming
| Possible Component | Reference/Action |
|---|---|
| 261 - ELECTRICAL ROUTINE | |
| Powertrain Control System | - |
|
- |
| 361 - HYDRAULIC/MECHANICAL ROUTINE | |
| Transmission Fluid | - |
|
|
|
|
| Pump Assembly | - |
|
|
|
|
|
|
| Case | - |
|
|
|
|
| Other | - |
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|
|
|
|
|
Other Concerns: Slips/Chatters in 1st Gear
| Possible Component | Reference/Action |
|---|---|
| 263 - ELECTRICAL ROUTINE | |
| Powertrain Control System | - |
|
|
| - |
|
| - |
|
| 363 - HYDRAULIC/MECHANICAL ROUTINE | |
| Transmission Fluid | - |
|
|
|
|
| Incorrect Pressures | - |
|
|
| Main Control | - |
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|
|
|
|
|
|
|
| Pump Assembly | - |
|
|
|
|
|
|
| Forward Clutch Assembly | - |
|
|
|
|
|
|
|
|
| Low One-Way Clutch | - |
|
|
Other Concerns: Slips/Chatters in 2nd Gear
| Possible Component | Reference/Action |
|---|---|
| 264 - ELECTRICAL ROUTINE | |
| Powertrain Control System | - |
|
|
| - |
|
| - |
|
| 364 - HYDRAULIC/MECHANICAL ROUTINE | |
| Transmission Fluid | - |
|
|
|
|
| Incorrect Pressures | - |
|
|
| Fluid Pump Assembly | - |
|
|
|
|
|
|
| Servo | - |
|
|
| Band | - |
|
|
|
|
|
|
|
|
| Overdrive (O/D) Planetary Assembly | - |
|
|
| Forward Clutch Assembly | - |
|
|
|
|
|
|
|
|
Other Concerns: Slips/Chatters in 3rd Gear
| Possible Component | Reference/Action |
|---|---|
| 282 - ELECTRICAL ROUTINE | |
| Powertrain Control System |
|
| 382 - HYDRAULIC/MECHANICAL ROUTINE | |
| Transmission Fluid | - |
|
|
|
|
| Incorrect Pressures | - |
|
|
| Pump Assembly | - |
|
|
|
|
|
|
| Forward Clutch Assembly | - |
|
|
|
|
|
|
|
|
Other Concerns: No Engine Braking in ALL Gears
| Possible Component | Reference/Action |
|---|---|
| 283 - ELECTRICAL ROUTINE | |
| Powertrain Control System | - |
|
|
| - |
|
| - |
|
| 383 - HYDRAULIC/MECHANICAL ROUTINE | |
| No Hydraulic/Mechanical concerns | - |
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.