why does my Ram 1500 DT (2019-Present) have a harsh transmission shift

Solution

1. Preparation

• Gather all tools and parts needed for the repair.
• Ensure the vehicle is parked on a level surface with the engine off.
• Disconnect the battery to prevent electrical shorts during the repair.

2. Check Transmission Fluid

• Remove the transmission dipstick and wipe it clean.
• Insert it back and remove it to check fluid level; add fluid if low (use the manufacturer-recommended transmission fluid).
• Inspect fluid color and smell; if dark or smells burnt, consider a fluid change.

3. Update Transmission Control Module (TCM)

• Reconnect the battery.
• Use the OBD-II scanner to check for TCM updates; follow manufacturer instructions to install any available updates.
• Clear any error codes after the update.

4. Inspect and Adjust Linkage

• Locate the transmission linkage and inspect for wear or damage.
• If misalignment is present, adjust the linkage according to the manufacturer's specifications.
• Tighten any loose bolts or fasteners to ensure proper connection.

5. Flush and Replace Transmission Fluid (if necessary)

• Use a transmission flush machine or manual method to replace old fluid.
• Replace the transmission filter if applicable.
• Refill the transmission with the manufacturer-recommended fluid and check for leaks.