How can I fix the transmission shifting problems in my 2020 Chevrolet Silverado 1500 T1XX?

Transmission Shifting Problems in 2020 Chevrolet Silverado 1500 T1XX

Repair Instructions

Step 1: Address Fluid Issues

1. If the fluid is low, add the appropriate transmission fluid as specified in the owner’s manual.
2. If the fluid is dirty or burnt, perform a transmission fluid change:
   • Procedure:
     • Raise the vehicle securely on jack stands.
     • Remove the transmission pan and filter.
     • Replace the filter and clean the pan.
     • Refill with new transmission fluid.

Step 2: Repair Electrical Issues

1. If you found damaged wiring or connectors during the visual inspection:
   • Procedure:
     • Repair or replace any damaged wiring or connectors.
     • Ensure that all connections are clean and secure.

Step 3: Replace Transmission Range Sensor (if necessary)

1. If the TRS is malfunctioning:
   • Procedure:
     • Remove the old sensor from the transmission.
     • Install the new TRS by reversing the removal steps.
     • Reconnect the electrical connector.

Step 4: Clear Codes and Test Drive

1. After repairs are completed, clear the codes using the OBD-II scanner.
2. Take the vehicle for a test drive to ensure that the shifting problem is resolved. Pay attention to the symptoms you previously noted.

Conclusion

If the problem persists after following these steps, it may indicate a deeper issue such as internal transmission failure or problems with the transmission control module (TCM). In such cases, consult a professional technician or a transmission specialist for further diagnosis and repair.