ABS and Brake Light comes on Intermittently, 2001 Siverado

[FWGuy]

My warnings lights for the - ABS & Brakes comes on intermittently, during driving and stays on. If I power off and back on they fault lights clear.

Some days no lights and others I will get the light. Seems to more likely to come on during rough road driving but thats not always the case. Very Rarely comes on right away but that is starting to become more frequent.

 

I checked the computer via DTC connector and "No" Fault Codes are logged in the computer.

I checked the for codes while the lights were on and nothing is logged.

Not sure if Dealer can diagnose a problem with no fault codes???

 

2001 Silverdao 1500

5.3L V-8

Extended Cab

 

[sahls01gmc]

Could be a ground coming loose somewhere. Make sure they are tight, clean and secure at your fuse box, and ABS box mounted on your drivers side frame rail. Sometimes the ABS box can go bad, and there's a video floating around here somewhere where a guy took it apart and re-soldered the connections and fixed his issue! Hopefully someone else can find it and post it here.

[rjgti]

wheel bearing maybe. unless you have a very expensive scanner you will not see any codes

[Gone Again]

Believe it or not your issue could be caused by a brake fluid level too low in the reservoir. Going around a corner, rough roads or faster than normal stops can cause the fluid level to shift and trigger the low level indicator to turn on both lights. Have had this happen in past so take a look if you haven't already.