trac off abs and brake light

Check abs wheel sensors, if nothing obvious like a broken wire or sensor, you'll need to have it scanned to find the problem

Sounds like two separate issues. The ABS, brake and trac indicator lights are all related because they all involve the braking system of the car. As Irodri911 said, it is probably a sensor that has gone bad. The gear issue is most likely a trans issue but we need more info to help diagnose. Does the car increase speed as the RPM's increase or does it stay at 35 and the RPM's keep rising? If the brake issue is holding the car back, this may be why your speed is not increasing. Have the brake issue fixed first and then see if the shifting issue goes away.

how can I check this sensor?

Have the cars diagnostics scanned and see what codes show up. A bad sensor will likely trigger a code that can be used to diagnose. An auto store or shop can easily do this for you for free.

You can only do a visual inspection, you'll have to get it scanned to actually see if they're working or not

There is no code

I replace the brakes, calipers and rear wheel cylinders with new wheel sensors check all brake line for leaks. brake light comes on intermittently. I think it was the emergency brake not disengaging but I tested it and it working properly.

When you get no code reading and the brake light comes on what do you do?