why does my Ram 1500 DT (2019-Present) transmission hesitate when shifting

Ram 1500 DT (2019-Present)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

549 words

Problem Statement

Learn how to diagnose and fix transmission hesitation in Ram 1500 DT (2019-Present). Step-by-step guide with diagnostic procedures 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 electronic components.
•Allow the engine to cool down before inspecting the transmission to avoid burns.

Symptoms

•Transmission hesitates when shifting from one gear to another
•Slipping sensation during acceleration
•Delayed response when pressing the accelerator
•Check engine light illuminated
•Rough shifting or hard engagement between gears

Diagnostic Steps

1
Scan the vehicle's computer for Diagnostic Trouble Codes (DTCs) using an OBD-II scanner.
2
Inspect the transmission fluid level and condition; look for signs of contamination or burning.
3
Check for any visible leaks around the transmission pan and seals.
4
Test the transmission control module (TCM) for proper function using a multimeter.
5
Evaluate the throttle position sensor (TPS) for accurate readings and functionality.
6
Inspect the transmission mounts for wear or damage that may affect alignment.

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
•Fluid pump
•Torque wrench

Parts Required

•Transmission fluid (manufacturer recommended)
•Transmission filter
•Gasket for transmission pan
•Throttle position sensor (if needed)
•Transmission control module (if needed)

Related Faults

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Diagnostic Steps

1
Scan the vehicle's computer for Diagnostic Trouble Codes (DTCs) using an OBD-II scanner.
2
Inspect the transmission fluid level and condition; look for signs of contamination or burning.
3
Check for any visible leaks around the transmission pan and seals.
4
Test the transmission control module (TCM) for proper function using a multimeter.
5
Evaluate the throttle position sensor (TPS) for accurate readings and functionality.
6
Inspect the transmission mounts for wear or damage that may affect alignment.

Solution

1. Preparation

Tools Required: OBD-II scanner, socket set, multimeter, fluid pump, transmission fluid, torque wrench.
Ensure the vehicle is parked on a level surface, and engage the parking brake.
Disconnect the negative battery terminal to prevent electrical shorts.

2. Check and Replace Transmission Fluid

Remove the transmission pan using a socket set.
Inspect the old fluid; if it’s dark or has a burnt smell, it needs replacing.
Clean the pan and replace the filter; ensure the old gasket is removed completely.
Reinstall the pan with a new gasket, tightening bolts to the manufacturer’s specified torque.
Refill the transmission with the recommended type of fluid using a fluid pump.

3. Inspect and Test Transmission Control Module (TCM)

Locate the TCM, usually near the transmission or under the dashboard.
Disconnect the TCM connector and inspect for corrosion or damage.
Use a multimeter to check the voltage and ground connections to the TCM.
If faulty, replace the TCM with a compatible unit, ensuring all connections are secure.

4. Throttle Position Sensor (TPS) Testing and Replacement

Locate the TPS on the throttle body.
Disconnect the TPS connector and test the voltage output at idle and full throttle with a multimeter.
If readings are out of specification, replace the TPS with a new one and reconnect.