have 89 s10 that has the brake light on solid on the instrument cluster.

[oneshy23]

I have 89 s10 and the brake light is illuminated on the instrument cluster. This truck has no abs. I have checked the brake fluid and it is at the proper level. The truck has a hard pedal. I was maybe thinking it was a brake fluid level sensor or the brake pressure sensor on the proportioning valve under the master cylinder. I don't have access to any diagnostic information so any advice will be appreciated.

[MT-2500]

Originally Posted by oneshy23

I have 89 s10 and the brake light is illuminated on the instrument cluster. This truck has no abs. I have checked the brake fluid and it is at the proper level. The truck has a hard pedal. I was maybe thinking it was a brake fluid level sensor or the brake pressure sensor on the proportioning valve under the master cylinder. I don't have access to any diagnostic information so any advice will be appreciated.

Does it still have a full pedal and no fluid leaks?
Red brake light?
Unplug the sensors and see if it goes out.
Also unplug the emg brake switch.

[MT-2500]

Are you real sure you do not have rear wheel ABS brakes?
If brake light still on after sensor and switch disconnect.
Check for ABS codes by grounding H and A pins on diagnostic connector.
Post back any code you get.

[mcmalloy]

i would go with the e-brake pedel, it works with a ground wire , when you set the e-brake it is ungrounded causing the light to come on