How to Replace Automatic Transmission Connector 05-07 Chrysler 300
Difficulty: Advanced · About 120 min · Chrysler 300
Replace the automatic-transmission electrical pass-through connector on a 2005–2007 Chrysler 300 if its seal is leaking or connector is damaged. Support the vehicle level, renew the seals, and set transmission fluid using the exact temperature-based service procedure.
Tools you will need
- Floor jack
- Jack stands
- Drain pan
- 7mm socket
- Ratchet
- Torque wrench
- Paper towels
Parts and supplies
- Transmission electrical pass-through connector
- Connector O-rings
- Automatic transmission fluid
Steps
Secure the vehicle level
Park on a level surface, set the brake, and raise the vehicle only at approved points. Support it on stands so it remains level; allow the transmission to cool before opening its connector port.
Remove the connector and old seals
Release the electrical lock and unplug the harness. Place a drain pan below the port, remove the connector retainer bolt, and withdraw the receptacle and its O-rings without scratching the bore.
Install the replacement connector
Fit new compatible O-rings to the receptacle and lubricate them with the specified transmission fluid. Press it squarely into the case, tighten the retaining bolt to service specification, and reconnect the harness.
Set the transmission fluid level
Clean spilled fluid and lower the vehicle safely. Follow the exact factory procedure for this transmission's fluid temperature, engine state, selector cycling, and dipstick; do not rely on ambient temperature alone.
Check for leaks and proper operation
With the fluid level set to specification, inspect the connector for seepage and verify the transmission engages gears normally. Correct any leak or warning before driving.
Check your vehicle’s repair manual for exact specifications and fit.