my Genesis G70 transmission feels rough when shifting gears, what’s the issue?

Genesis G70 1st Gen (2018-Present)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

491 words

Problem Statement

Learn how to diagnose and fix rough shifting in Genesis G70 transmission. 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 system.

Symptoms

•Rough shifting between gears
•Delayed engagement when shifting
•Unusual noises during gear changes
•Slipping out of gear
•Check engine light may be illuminated
•Fluid leak under the vehicle

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any transmission-related codes.
2
Check the transmission fluid level and condition (color, smell).
3
Inspect the transmission fluid for contamination or burnt smell.
4
Examine the transmission control module (TCM) for updates or faults.
5
Conduct a visual inspection of the transmission for leaks or damaged components.
6
Test drive the vehicle to replicate the rough shifting and assess its severity.

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
•Drain pan
•Funnel

Parts Required

•Transmission fluid
•Transmission filter (if applicable)
•Gasket for transmission pan (if applicable)

Related Faults

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any transmission-related codes.
2
Check the transmission fluid level and condition (color, smell).
3
Inspect the transmission fluid for contamination or burnt smell.
4
Examine the transmission control module (TCM) for updates or faults.
5
Conduct a visual inspection of the transmission for leaks or damaged components.
6
Test drive the vehicle to replicate the rough shifting and assess its severity.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a level surface and the engine is off.
Disconnect the battery to avoid electrical issues during repairs.

2. Check and Replace Transmission Fluid

Sub-steps:
1. Remove the transmission dipstick and check fluid level and condition.
2. If fluid is low or dirty, drain the old transmission fluid by removing the drain plug.
  - Tools Required: Socket set, drain pan.
3. Replace the transmission fluid with the manufacturer-recommended type (check owner's manual).
  - Note: Use a funnel to avoid spills.
4. Reinstall the drain plug and torque it to manufacturer specifications (usually around 8-10 ft-lbs).
5. Recheck fluid level using the dipstick and top off as necessary.

3. Inspect Transmission Filter (if applicable)

Sub-steps:
1. Remove the transmission pan (if accessible) by loosening bolts.
  - Tools Required: Socket set, gasket scraper.
2. Inspect the transmission filter and replace it if clogged or dirty.
3. Clean the transmission pan and replace the gasket.
4. Reinstall the pan and torque bolts to specifications.

4. Update Transmission Control Module

Sub-steps:
1. Connect the OBD-II scanner to the vehicle.
2. Check for and install any software updates for the TCM.
3. Clear any fault codes and recheck for new codes after driving.