why does my Ram 1500 DT (2019-Present) have a hard shifting issue

Ram 1500 DT (2019-Present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

527 words

⚠️ Safety Warning

This issue requires immediate attention. If you are not experienced with automotive repairs, consult a professional mechanic. Working on critical systems can be dangerous.

Problem Statement

Learn how to diagnose and fix hard shifting issues in Ram 1500 DT (2019-Present). Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Transmission

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems.
•Allow the engine to cool before opening the transmission system.

Symptoms

•Noticeable thumping or jolt during gear changes
•Increased engine RPMs without corresponding acceleration
•Delayed engagement when shifting from park to drive or reverse
•Transmission slipping or failure to shift
•Check engine light illuminated

Diagnostic Steps

1
Scan the vehicle's computer system using an OBD-II scanner for any error codes related to the transmission.
2
Check the transmission fluid level and condition (color, smell, and presence of particles).
3
Inspect the transmission control module (TCM) for any visible damage or loose connections.
4
Test the transmission fluid pressure using a pressure gauge to ensure it meets manufacturer specifications.
5
Evaluate the throttle position sensor (TPS) for proper operation, as this can affect shifting behavior.
6
Conduct a road test to observe shifting behavior under various driving conditions.

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

Verification

After completing the repair, verify that the issue has been resolved:

✓Test the affected component to ensure it functions correctly
✓Check for any error codes or warning lights
✓Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

•Follow the manufacturer's recommended maintenance schedule
•Address warning signs early before they develop into major issues
•Use quality parts and fluids recommended for your vehicle
•Keep detailed records of all repairs and maintenance

Tools & Equipment Required

•OBD-II scanner
•Socket set
•Transmission fluid pressure gauge
•Multimeter

Parts Required

•Transmission fluid (ATF+4)
•Transmission filter (if applicable)
•Transmission pan gasket
•Throttle position sensor (if necessary)

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Scan the vehicle's computer system using an OBD-II scanner for any error codes related to the transmission.
2
Check the transmission fluid level and condition (color, smell, and presence of particles).
3
Inspect the transmission control module (TCM) for any visible damage or loose connections.
4
Test the transmission fluid pressure using a pressure gauge to ensure it meets manufacturer specifications.
5
Evaluate the throttle position sensor (TPS) for proper operation, as this can affect shifting behavior.
6
Conduct a road test to observe shifting behavior under various driving conditions.

Solution

1. Preparation

Tools Required: OBD-II scanner, socket set, transmission fluid pressure gauge, multimeter.
Ensure the vehicle is parked on a level surface and the engine is cool.
Disconnect the battery to prevent electrical shorts.

2. Fluid Change

Sub-steps:
1. Remove the transmission pan by unscrewing the bolts using a socket set.
2. Drain the old transmission fluid into a suitable container.
3. Replace the transmission filter if applicable, following manufacturer guidelines.
4. Clean the transmission pan and magnet of debris.
5. Reinstall the pan with a new gasket and torque bolts to the manufacturer's specifications (typically 10-12 ft-lbs).
6. Refill the transmission with the recommended fluid type (e.g., ATF+4 for Ram trucks) through the dipstick tube.

3. TCM Reprogramming (if necessary)

Sub-steps:
1. Reconnect the battery.
2. Use the OBD-II scanner to check for software updates for the TCM.
3. Follow prompts on the scanner to update or reprogram the TCM if needed, ensuring all parameters are set to factory specifications.

4. Sensor Inspection and Replacement

Sub-steps:
1. Disconnect the electrical connectors from the TPS and check using a multimeter for proper voltage readings (refer to specifications).
2. If readings are out of range, replace the TPS with a new part.
3. Reconnect all electrical connectors and ensure they are secure.