why is my Ram 1500 DT (2019-Present) transmission jerking during shifts?

Ram 1500 DT (2019-Present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

552 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 transmission jerking 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 vehicle to cool before working on the transmission to prevent burns.

Symptoms

•Jerking or harsh shifting between gears
•Delayed engagement when selecting Drive or Reverse
•Unusual noises during shifting (clunking or grinding)
•Check engine light may be illuminated
•Fluid leaks under the vehicle
•Decreased fuel efficiency

Diagnostic Steps

1
Scan the vehicle's onboard computer for any diagnostic trouble codes (DTCs) using an OBD-II scanner.
2
Inspect the transmission fluid level and condition; check for burnt smell or metal shavings.
3
Examine the transmission control module (TCM) for any signs of damage or disconnection.
4
Test the transmission fluid pressure using a gauge to ensure it is within manufacturer specifications.
5
Inspect the throttle position sensor (TPS) and its connections for proper operation.
6
Check for any leaks in the transmission cooler lines and seals.

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
•Multimeter
•Torque wrench
•Transmission fluid gauge

Parts Required

•Transmission filter (if applicable)
•Transmission pan gasket
•ATF+4 transmission fluid

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Diagnostic Steps

1
Scan the vehicle's onboard computer for any diagnostic trouble codes (DTCs) using an OBD-II scanner.
2
Inspect the transmission fluid level and condition; check for burnt smell or metal shavings.
3
Examine the transmission control module (TCM) for any signs of damage or disconnection.
4
Test the transmission fluid pressure using a gauge to ensure it is within manufacturer specifications.
5
Inspect the throttle position sensor (TPS) and its connections for proper operation.
6
Check for any leaks in the transmission cooler lines and seals.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is on a level surface and securely supported with jack stands.
Disconnect the battery to prevent electrical shorts.

2. Transmission Fluid Change

Sub-steps:
1. Remove the transmission pan by loosening bolts with a socket set.
2. Drain the old transmission fluid into a suitable container.
3. Replace the transmission filter (if equipped) by unbolting it from the valve body.
4. Clean the transmission pan and replace the pan gasket to prevent leaks.
5. Reinstall the transmission pan with the manufacturer's specified torque settings.
6. Refill the transmission with the correct type and amount of fluid as specified in the owner’s manual (typically, ATF+4 for Ram trucks).

3. Inspect and Test Throttle Position Sensor (TPS)

Sub-steps:
1. Locate the TPS on the throttle body.
2. Disconnect the electrical connector from the TPS.
3. Use a multimeter to measure the resistance across the TPS terminals while moving the throttle plate; ensure it varies smoothly without dead spots.
4. If the TPS is faulty, replace it with a new one and reconnect the electrical connector.

4. Reprogram Transmission Control Module (TCM)

Sub-steps:
1. Reconnect the battery and start the engine.
2. Use a professional scan tool to access TCM settings.
3. Follow the tool's procedure to reprogram or reset the TCM to adapt to new fluid conditions or components.
4. Conduct a test drive to ensure the transmission shifts smoothly.