why does my Genesis G70 feel like it's jerking during shifts

Genesis G70 1st Gen (2018-Present)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

516 words

Problem Statement

Learn how to diagnose and fix transmission jerking issues in Genesis G70. 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 electrical systems.
•Allow the engine to cool before opening the transmission or working near hot components.

Symptoms

•Jerking or lurching sensation during upshifts and downshifts
•Delayed engagement when shifting from park to drive or reverse
•Unusual noises during shifting (clunking or grinding)
•Check engine light illuminated (if applicable)
•Decreased fuel efficiency

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any transmission-related trouble codes.
2
Check the transmission fluid level and condition; look for contamination or burnt smell.
3
Inspect the transmission for leaks, paying attention to seals and gaskets.
4
Test the transmission control module (TCM) for updates or faults.
5
Examine the engine mounts and transmission mounts for wear or damage.
6
Check throttle position sensor and mass airflow sensor for proper operation.

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
•Fluid pump

Parts Required

•Transmission filter
•Transmission fluid
•Gasket for transmission pan
•Engine and transmission mounts (if needed)

Related Faults

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any transmission-related trouble codes.
2
Check the transmission fluid level and condition; look for contamination or burnt smell.
3
Inspect the transmission for leaks, paying attention to seals and gaskets.
4
Test the transmission control module (TCM) for updates or faults.
5
Examine the engine mounts and transmission mounts for wear or damage.
6
Check throttle position sensor and mass airflow sensor for proper operation.

Solution

1. Preparation

Gather necessary tools and replacement parts.
Ensure the vehicle is on a level surface and securely lifted.
Disconnect the battery to avoid electrical shorts.

2. Check and Replace Transmission Fluid

Sub-steps:
1. Remove the transmission dipstick and check fluid level. If low, add the manufacturer-recommended transmission fluid.
2. If fluid is burnt or contaminated, drain the transmission fluid using a fluid pump.
3. Remove the transmission pan bolts and carefully detach the pan to access the filter.
4. Replace the transmission filter, ensuring the new filter is seated properly.
5. Reinstall the transmission pan, using a new gasket, and torque the bolts to manufacturer specifications.
6. Refill the transmission with the correct amount of new fluid through the dipstick tube.

3. Inspect and Replace Mounts (if necessary)

Sub-steps:
1. Locate the engine and transmission mounts.
2. Inspect for cracks, wear, or separation from the mounting points.
3. If damaged, remove the old mounts using a socket set.
4. Install new mounts, ensuring they are aligned properly and torqued to the manufacturer’s specifications.

4. Update Transmission Control Module

Sub-steps:
1. Connect the vehicle to a diagnostic scanner capable of updating the TCM.
2. Follow the prompts to check for available updates and follow the manufacturer’s instructions to apply them.