how to fix my Genesis G70 transmission jerking during shifting

Genesis G70 IG (2017-2023)

Error Codes

3-5 hours

Time

medium

Difficulty

high

Severity

3 min read

517 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 jerking in Genesis G70. 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 to cool before opening the transmission.

Symptoms

•Transmission jerks or lurches during gear changes
•Unusual noises (clunking or grinding) during shifting
•Delayed engagement when shifting from park to drive or reverse
•Engine RPM fluctuations while shifting
•Warning lights illuminated on the dashboard (if applicable)

Diagnostic Steps

1
Scan the vehicle's computer with an OBD-II scanner for any error codes related to the transmission.
2
Check the transmission fluid level and condition (color and odor).
3
Inspect the transmission mounts for wear or damage.
4
Examine the throttle position sensor (TPS) readings for proper function.
5
Test the transmission control module (TCM) for software updates or faults.
6
Perform a road test to replicate the jerking issue while monitoring the transmission 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
•Transmission fluid
•Safety glasses
•Multimeter

Parts Required

•Transmission fluid (manufacturer-recommended type)
•Transmission filter (if applicable)
•Transmission mount(s) (if necessary)
•Throttle position sensor (if faulty)

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Scan the vehicle's computer with an OBD-II scanner for any error codes related to the transmission.
2
Check the transmission fluid level and condition (color and odor).
3
Inspect the transmission mounts for wear or damage.
4
Examine the throttle position sensor (TPS) readings for proper function.
5
Test the transmission control module (TCM) for software updates or faults.
6
Perform a road test to replicate the jerking issue while monitoring the transmission operation.

Solution

1. Preparation

Gather tools: OBD-II scanner, socket set, torque wrench, fluid pump, transmission fluid, and safety glasses.
Park the vehicle on a level surface and engage the parking brake.

2. Fluid Inspection and Replacement

Check Fluid Level:
- With the engine running and the transmission in park, remove the dipstick and wipe it clean.
- Reinsert and remove the dipstick again to check the fluid level.
- If low, add the manufacturer-recommended transmission fluid.
Fluid Change:
- Place a drain pan under the transmission pan.
- Remove the transmission pan bolts using a socket set.
- Carefully lower the pan to drain the fluid completely.
- Replace the transmission filter if applicable (follow manufacturer specifications).
- Reinstall the pan with a new gasket and torque bolts to the manufacturer’s specifications.

3. Inspect and Replace Components

Inspect Transmission Mounts:
- Visually inspect the transmission mounts for signs of cracking or wear.
- If damaged, remove the fasteners securing the mounts and replace them with new ones, torquing to specifications.
Throttle Position Sensor (TPS) Check:
- Disconnect the TPS connector and use a multimeter to check resistance; compare readings to specifications.
- If faulty, replace the TPS by removing it from the throttle body and installing a new one.
Transmission Control Module (TCM) Update:
- If the TCM is outdated, connect a diagnostic tool to update the software per manufacturer guidelines.