Rough 1–2 and 2–3 shifts, similar to the 10-speed problems but more common when cold.
Programming updates help but do not eliminate the issue.
Transmission suddenly loses power as if shifted to neutral.
Often tied to clutch apply failures or hydraulic leaks inside the transmission.
Light-throttle vibration around 45–60 mph.
Contaminated fluid or inadequate converter clutch material is common root cause.
Cracks, bore wear, or failed solenoids cause inconsistent line pressure.
Leads to slip, flare, or refusal to shift into certain gears.
Placing the vehicle into Reverse results in a hard clunk or long delay.
Usually caused by low pressure or worn reverse clutch components.
The 9-speed runs hot, especially in SUVs, leading to accelerated fluid breakdown.
Overheated fluid increases wear and causes shift quality deterioration.
Bearing noise or metal debris in the pan.
Can lead to catastrophic transmission failure if ignored.