Ram 1500 DT (2019-Present) transmission slipping when accelerating, what to do

Ram 1500 DT (2019-Present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

539 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 slipping 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 components.
•Allow the engine to cool before checking or replacing transmission fluid.

Symptoms

•Transmission slips during acceleration
•Delayed or harsh shifting
•High RPM without corresponding vehicle speed
•Possible check engine light illuminated
•Fluid leaks under the vehicle
•Unusual noises when shifting gears

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any transmission-related faults.
2
Check the transmission fluid level and condition; inspect for burnt smell or dark color.
3
Inspect the transmission fluid lines for leaks or damage.
4
Examine the transmission filter for clogging or contamination.
5
Test the vehicle's throttle position sensor (TPS) for proper function.
6
Perform a visual inspection of the transmission control module (TCM) connections and wiring.

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
•Screwdriver
•Drain pan
•Multimeter
•Transmission funnel
•Fluid pump

Parts Required

•Transmission fluid
•Transmission filter
•Gasket or seal for transmission pan

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any transmission-related faults.
2
Check the transmission fluid level and condition; inspect for burnt smell or dark color.
3
Inspect the transmission fluid lines for leaks or damage.
4
Examine the transmission filter for clogging or contamination.
5
Test the vehicle's throttle position sensor (TPS) for proper function.
6
Perform a visual inspection of the transmission control module (TCM) connections and wiring.

Solution

1. Preparation

Ensure the vehicle is parked on a level surface and the engine is cool.
Gather tools and parts needed for the repair.
Disconnect the negative terminal of the battery.

2. Check and Refill Transmission Fluid

Tools Required: Transmission funnel, fluid pump.
Sub-steps:
1. Remove the transmission dipstick to check fluid level and condition.
2. If fluid is low, add the manufacturer-recommended transmission fluid until the correct level is reached.
3. If fluid is burnt or contaminated, proceed to replace the fluid.

3. Replace Transmission Fluid and Filter

Tools Required: Socket set, screwdriver, drain pan, new transmission filter, new transmission fluid.
Sub-steps:
1. Place a drain pan under the transmission pan and remove the pan bolts.
2. Carefully lower the pan and drain the old fluid completely.
3. Remove the old filter and replace it with a new one.
4. Clean the transmission pan and install a new gasket or seal.
5. Reattach the pan and torque bolts to the manufacturer’s specifications.
6. Refill the transmission with new fluid.

4. Inspect and Repair Electrical Components

Tools Required: Multimeter, wiring harness diagram.
Sub-steps:
1. Check the TCM connections for corrosion or damage.
2. Use a multimeter to test the TPS for proper voltage output.
3. Repair or replace any damaged wiring or components as necessary.

5. Test Drive

Sub-steps:
1. Reconnect the negative battery terminal.
2. Start the engine and allow it to warm up.
3. Test drive the vehicle to ensure smooth shifting and acceleration.