Wont shift into a gear, stays in that one gear.

Hello Crystal,
It might be the Safety Switch that is defective.
Take to a transmission shop for further diagnostics
Best of Luck!
JP

the .pcm puts it in limp mode and it will stay in mode until light is turned off. You need to get the trouble code, repair it, erase the codes (with a scanner that retrieves the codes), and then you will be out of limp home mode.

trans oil temp sensor will make this trans act up and a possible tcm update may be available for these cars

You need to "bite the bullet" and get the tranny replaced.

Any codes like 1870? you can try Lucas no slip up to three bottles.

Assuming you have an automatic transmission....Sounds like you probably have some internal damage. Take it to a reputable transmission shop and have it diagnosed.

Theroadisalover

Try to post back and let me know If I helped you solve your problem. It will help me with my rating....! Thanks

I have a 2002 Hyundai Sonata and I had the same problem. But mine would always shift into 3rd gear and STAY there until I turned the car off. I took it to a Hyundai dealer and he had to rewire a speed sensor on top of the transmission. Apparently a little animal got up in that tight little spot and gnawed on my sensor wires. The car has run fine since. To make a long story short, it might be your speed sensor on your transmission.

On your transmission there is a transmission speed sensor (vehicle speed sensor). These do go bad sometimes. What happens is you are going along all happy at 60 mph but the info being transmitted by the sensor is incorrect and BAM you're not so happy anymore. This also puts a lot of additional wear and tear on the transmission. For this vehicle at Autozone you can buy the sensor I believe for around $40 and it is not that hard to change or maybe expect to pay maybe $40-60 to change (guesstimate)...hope this helps you.

Its a sensor on the transmission....had mine replaced 3 times.

The input and output transmission sensors may be bad. My car had this malfunction. I replaced the sensors and have had no more problems.