Brake and ABS lights...

[MMeier]

... started messing with me yesterday on the road. Sometimes they will light up right away, other times I must push the brake pedal. AND sometimes hitting the brake pedal shuts them off!!!! #@$%! Remember on my 97 it was a bad sensor thingie in the rear diff, are these trucks the same or is something else going on?

 

[rbattelle]

Sounds like an intermittent wheel sensor to me. I think it's still in the diff out back.



-Ryan

 

[MMeier]

Sounds like an intermittent wheel sensor to me. I think it's still in the diff out back.



-Ryan

Anyone know for sure, been a bit since I was under there. Damn driveway is just too damn hot now to go lay on!

 

[RM]

my 06 was doing the same thing so i read my 03 service manual and found that if the red brake light and the yellow abs light are on at the same time that its a failure of the ebpv or electronic brake proportioning valve. located in you're abs module. what i did was check every connection. its a 3 channel so theres a sensor at both fronts and center of rear diff. then i checked the connection at the abs unit reinstalled and all been well ever sense. remember the bus is only 5 volts and milliamps to set a code you don't need much resistance in a connection hope this helps some

 

[MMeier]

Will a scan tool pick up on where it thinks the fault is? (One of the fronts or out back on the diff).

 

[p-Bar]

the sensor at the rear diff is also the speedo sensor if your speedo isn't jerking around then check the other sensors. Sometimes just dust will cause it to throw a code.