Planetary Gear Set Failure

Common symptoms

What you'll notice

• Inspect and replace any worn or damaged gear components within the planetary gear set.
• Check and replace the torque converter if it is found to be faulty or damaged.
• Perform a fluid flush and replace with fresh transmission fluid to ensure proper lubrication and operation.
• Conduct a thorough inspection of the transmission for any other potential issues and address accordingly.
• If all else fails, consider rebuilding or replacing the entire transmission assembly.

Common causes

Most likely first

1. Lack of proper maintenance and servicing
2. Low transmission fluid levels or contaminated fluid
3. Overheating of the transmission system
4. Excessive towing or heavy load carrying
5. Incorrect gear shifting or aggressive driving techniques

How to diagnose & fix

Work through it in order

1. Harsh or delayed shifting between gears
2. Whining or grinding noise coming from the transmission
3. Slipping or hesitation during acceleration
4. Transmission overheating
5. Inability to shift into certain gears