my E brake light and ABS come on after 40 MPH and i cant figure it out i have replaced 3 sensors redone all the breaks and still wont go away can anyone help?

 

Welcome to the site. Please scan your PCM for any DTCs. What year is your truck? Do you have a tuner or ODBII Scanner?

 

Do you have OEM sized tires? Have you had your truck flashed to correct the tire size?
2w-ABS or 4w-ABS?
Also, check THIS out.

 

its 4 wheel drive and its an 02 i have 35i tires and i have fixed all the speedomater sensors and abs sensors and it still wont stop it

 

like nothings happens nothing goes wrong when it comes on nothing changes just the lights come on and no one knows why. also my 4 wheel drive light is on when im in 2 wheel drive and goes off when in 4? any help out there

 

Hey man. I've got an 08 1500 Quad Cab 4x4 and I just had the brake and ABS lights come on 5 different trips in a row along with the "Oh crap" chime. Fluids are good speedometer was still working fine but once the lights illuminated, cruise became disabled. One time I even turned the key off coasting in neutral and popstarted it and everything was fine again. I figured it wasn't the speed sensor because the speedometer wasn't acting up. Luckily, my truck is still under warranty. Took it into the dealer with the lights still lit and had them run the codes. The only code that came up was P0703 which was for a faulty Brake Switch. They swapped it out in a jiffy and sent me on my way free of charge. I think it only runs about $20 elsewhere and should be plug and play right at the linkage of the brake pedal. Hope this helps but the 4x4 symptom is strange.

 

mine does that the speed pickup ring in the rearend or wat ever u call it has a couple teeth missin from when the LSD came apart check the sensor in the rearend and pull ur cover and looked at the ring