how to fix Ram 1500 transmission jerking when shifting

Ram 1500 DT (2019-Present)

Error Codes

3-5 hours

Time

medium

Difficulty

high

Severity

3 min read

505 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 a 2015 Ram 1500. Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Transmission

Estimated Time

3-5 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems.
•Allow the engine to cool before working on the transmission or removing components.

Symptoms

•Jerking or harsh shifting between gears
•Slipping sensation during acceleration
•Check engine light illuminated
•Delayed engagement when shifting from park to drive/reverse
•Unusual noises during shifting (clunking or grinding)

Diagnostic Steps

1
Scan the vehicle's onboard computer for any error codes using an OBD-II scanner.
2
Check transmission fluid levels and condition; look for signs of contamination or burning.
3
Inspect the transmission fluid filter for clogs.
4
Examine the transmission control module (TCM) for any visible damage or corrosion.
5
Test the vehicle's battery voltage and charging system, as low voltage can affect transmission operation.
6
Conduct a road test to replicate the jerking and observe under different 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
•Torque wrench
•Drain pan
•Fluid pump

Parts Required

•Transmission fluid (ATF+4)
•Transmission filter
•Transmission pan gasket
•Transmission control module (if replacing)

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Diagnostic Steps

1
Scan the vehicle's onboard computer for any error codes using an OBD-II scanner.
2
Check transmission fluid levels and condition; look for signs of contamination or burning.
3
Inspect the transmission fluid filter for clogs.
4
Examine the transmission control module (TCM) for any visible damage or corrosion.
5
Test the vehicle's battery voltage and charging system, as low voltage can affect transmission operation.
6
Conduct a road test to replicate the jerking and observe under different driving conditions.

Solution

1. Preparation

Gather all necessary tools and parts.
Ensure the vehicle is on a level surface and securely lifted if needed.
Disconnect the battery to prevent electrical shorts.

2. Fluid Change

Remove the transmission pan using a socket set, ensuring to catch the old fluid in a drain pan.
Replace the transmission filter by unbolting and removing it. Install the new filter, ensuring it is seated properly.
Clean the transmission pan and replace the gasket with a new one.
Reinstall the pan and torque the bolts to the manufacturer's specifications (typically around 10-12 ft-lbs).

3. TCM Reprogramming/Replacement

If error codes indicate TCM issues, reprogram the TCM using a compatible scan tool or replace it if necessary.
To replace, locate the TCM (usually found near the transmission) and unplug the electrical connectors.
Remove mounting bolts and replace with a new TCM, reconnecting all wiring securely.

4. Fluid Fill

Refill the transmission with the appropriate type of fluid (typically ATF+4 for Ram 1500).
Start the engine and let it idle for a few minutes while cycling through the gears to allow the fluid to circulate.
Check the fluid level with the engine running and add more fluid as necessary to reach the proper level.