why is my Ram 1500 DT (2019-Present) experiencing hard shifting?

Ram 1500 DT (2019-Present)

Error Codes

3-5 hours

Time

medium

Difficulty

high

Severity

3 min read

510 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

3-5 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems.
•Allow the engine and transmission to cool before servicing.

Symptoms

•Noticeable jerking or clunking during gear shifts
•Delayed engagement when shifting from park to drive or reverse
•Increased RPMs without a corresponding increase in speed
•Transmission slipping or difficulty maintaining speed
•Check engine light illuminated

Diagnostic Steps

1
Scan the vehicle's computer using an OBD-II scanner to check for any error codes related to the transmission.
2
Inspect the transmission fluid level and condition; low or dirty fluid may cause shifting issues.
3
Examine the transmission control module (TCM) for any faults or updates required.
4
Check for any visible leaks around the transmission and associated components.
5
Test the transmission solenoids to ensure they are functioning properly.
6
Inspect the throttle position sensor (TPS) for proper operation, as it can affect shifting behavior.

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
•Multimeter
•Funnel
•Screwdrivers
•Safety glasses
•Gloves

Parts Required

•Transmission fluid (ATF+4)
•Transmission filter
•Transmission pan gasket
•Transmission control module (if needed)
•Transmission solenoids (if needed)
•Throttle position sensor (if needed)

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Diagnostic Steps

1
Scan the vehicle's computer using an OBD-II scanner to check for any error codes related to the transmission.
2
Inspect the transmission fluid level and condition; low or dirty fluid may cause shifting issues.
3
Examine the transmission control module (TCM) for any faults or updates required.
4
Check for any visible leaks around the transmission and associated components.
5
Test the transmission solenoids to ensure they are functioning properly.
6
Inspect the throttle position sensor (TPS) for proper operation, as it can affect shifting behavior.

Solution

1. Preparation

Ensure the vehicle is parked on a level surface and the engine is off.
Gather all necessary tools and parts.
Wear safety glasses and gloves for protection.

2. Check and Replace Transmission Fluid

Sub-steps:
1. Locate the transmission dipstick; remove it and check the fluid level.
2. If fluid is low, add the recommended type (typically ATF+4 for Ram trucks) through the dipstick tube.
3. If fluid is dirty or has a burnt smell, proceed to drain and replace it.
4. To drain, remove the transmission pan bolts using a socket set, and carefully lower the pan to avoid spilling.
5. Replace the old filter with a new one and clean the pan before reinstalling it.
6. Refill the transmission with fresh fluid using a funnel.

3. Inspect and Replace Transmission Control Module (if necessary)

Sub-steps:
1. Disconnect the battery to prevent electrical shorts.
2. Locate the TCM, usually positioned near the transmission.
3. Remove the electrical connectors and mounting bolts.
4. Install the new TCM and reconnect the connectors.
5. Reconnect the battery and clear any error codes.

4. Test Transmission Solenoids

Sub-steps:
1. Disconnect the transmission solenoid connectors.
2. Using a multimeter, test the resistance of each solenoid according to manufacturer specifications.
3. Replace any faulty solenoids with new ones.

5. Throttle Position Sensor Adjustment

Sub-steps:
1. Locate the TPS on the throttle body.
2. Disconnect the electrical connector.
3. Using a multimeter, verify the voltage output; adjust as necessary according to specifications.
4. Reconnect the connector and retest the shifting.

Tools Required:

OBD-II scanner
Socket set
Torque wrench
Multimeter
Funnel
Screwdrivers
Safety glasses and gloves

Parts Required:

Transmission fluid (ATF+4)
Transmission filter
Transmission pan gasket
Transmission control module (if needed)
Transmission solenoids (if needed)
Throttle position sensor (if needed)

Estimated Repair Time: 3-5 hours

Safety Warnings:

Disconnect the battery before working on electrical systems.
Allow the engine and transmission to cool before servicing.