Dash Warning Lights for Brakes and Airbags come on randomly

[jla956]

I have a 2000 Yukon and the red warning lights on the dash for the Brakes, ABS, and Airbags come on randomly. Sometimes no lights are on, sometimes it's the Brake and ABS lights, sometimes it's the Airbag light, and at other times it's all three at the same time. I'm assuming that it's an electrical short of some type, or a module has gone out, and I was hoping that someone would have a fix for this. Thanks in advance for your help.

 

[MassHoe04]

Two main grounds that can cause weird behavior:
1) Main ground to back side of the engine block.
2) Another ground for many of the inside things is located on the driver's side, almost in line with the door hinges it is located between the rocker panel and the chassis.

The one under the driver's door is responsible for grounding the BCM and other key components.

Inspect, clean, tighten those ground points.

 

[Dalt10]

My Yukon ABS and Brake light come on sometimes. Does it randomly. I was told to clean the grounds like MassHoe04 said just haven't got around to doing it. Going to do that this weekend.

 

[Joseph Garcia]

As stated above, grounds should be the first thing that you check for those symptoms.