Up for sale is a Working, in excellent condition 2001 Hyundai Accent Transmission control unit. This unit is from a 2001 Accent with the SOHC engine, will fit the 2000-2005 Hyundais with the base model SOHC engine..  This is NOT correct for the DOHC engined cars, but I have that too if you need it.  This comes with a 30 day functionality guarantee. In the unlikely event that it fails to function properly in the 30 days after you receive it, you can return it to us and we will send you a free replacement or refund.Check the part number on your original to be sure this is correct for your car. The part number must match for it to work correctly. A defective TCU can mimic the same symptoms of a defective transmission. Do not erroneously replace a transmission, you will still have the exact same problems if the TCU is defective. Changing this unit only takes about 20 minutes. Try this first!