So we have done this as well as replaced tiss and toss and while its improved, but it still stops somewhat abruptly. now it kind-off drifts for awhile and then brakes. Any other next steps? I really appreciate your advice.

Thanks - I will do this and let you know. Your thought are appreciated.

So we have done this as well as replaced tiss and toss and while its improved, but it still stops somewhat abruptly. now it kind-off drifts for awhile and then brakes. Any other next steps? I really appreciate your advice.

what is the auto decal set to ??standard setting is 3 inchbrake overlap standard is 5 but a find 7 always a better feel
calibrate travel speed sensor correctly to 15m or 50ft and calibrate the transmission.after that replace the TOSS sensor

Not wet brakes - any other thoughts?

if truck has wet brakes first check the parkbrake lever on top of the axle isn't seized.its been known before