why does my Ram 1500 DT (2019-Present) transmission slip when accelerating?

Ram 1500 DT (2019-Present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

503 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 beginning work on electrical systems.
•Allow the engine to cool before opening the transmission.

Symptoms

•Transmission slips during acceleration
•Engine RPMs increase without corresponding vehicle speed
•Harsh or erratic shifting
•Warning lights illuminated on the dashboard (such as check engine light)
•Delayed engagement when shifting from park to drive or reverse
•Fluid leaks under the vehicle

Diagnostic Steps

1
Scan the vehicle’s onboard computer for any error codes using an OBD-II scanner.
2
Check the transmission fluid level and condition; look for signs of contamination or burnt smell.
3
Inspect the transmission fluid cooler and lines for leaks or blockages.
4
Examine the transmission filter for clogs or dirt accumulation.
5
Test the transmission range sensor for proper operation.
6
Verify the functionality of the throttle position sensor and vehicle speed sensor.

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
•Transmission fluid
•Funnel
•Fluid pump

Parts Required

•Transmission fluid
•Transmission filter
•Gasket for the transmission pan
•Throttle position sensor (if needed)
•Transmission range sensor (if needed)

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Symptoms

•Transmission slips during acceleration

•Engine RPMs increase without corresponding vehicle speed

•Harsh or erratic shifting

•Warning lights illuminated on the dashboard (such as check engine light)

•Delayed engagement when shifting from park to drive or reverse

•Fluid leaks under the vehicle

Diagnostic Steps

1
Scan the vehicle’s onboard computer for any error codes using an OBD-II scanner.
2
Check the transmission fluid level and condition; look for signs of contamination or burnt smell.
3
Inspect the transmission fluid cooler and lines for leaks or blockages.
4
Examine the transmission filter for clogs or dirt accumulation.
5
Test the transmission range sensor for proper operation.
6
Verify the functionality of the throttle position sensor and vehicle speed sensor.

Solution

1. Preparation

Tools Required: OBD-II scanner, socket set, torque wrench, transmission fluid, funnel, fluid pump.
Safety Warnings: Disconnect the battery before beginning work on electrical systems. Allow the engine to cool before opening the transmission.

2. Check and Replace Transmission Fluid

Sub-steps:
1. Raise the vehicle on jack stands and ensure it's secure.
2. Locate the transmission dipstick and remove it to check fluid level.
3. If low, use a funnel to add the recommended type of transmission fluid (consult the owner’s manual for specifications).
4. If fluid is burnt or contaminated, drain the old fluid by removing the transmission pan bolts.
5. Replace the transmission filter and gasket, ensuring a proper seal when reinstalling the pan.
6. Refill the transmission with new fluid to the appropriate level.

3. Inspect and Replace Components

Sub-steps:
1. Inspect the transmission cooler and lines for any leaks or damage; replace if necessary.
2. Check the transmission range sensor; if faulty, replace it following manufacturer specifications.
3. Test and replace the throttle position sensor if it’s not functioning correctly.
4. If issues persist, consider inspecting or replacing the valve body or solenoids inside the transmission.