ABS warning light turns on

2003 CHEVROLET SILVERADO
200,000 MILES • 4.8L • V8 • 2WD
Avatar
PSAGELY
  • MEMBER
  • 10 POSTS
While working on the brakes the brake fluid drained from master cylinder ever since then the ABS warning light turns on. Could air still be trapped that causes this or do I need to do other diagnostic on system?
Jun 13, 2022 at 9:48 AM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
Advertisement
Avatar
SQM
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 6,383 POSTS
Hello,

Have you bled the system after adding fluid?
Keep in mind that this ABS system will require a scan tool to bleed properly.

https://youtu.be/nQRnKyVyMuQ

The ABS light can be on due to a number of reasons. Could be for a sensor, wiring issue, master cylinder, module etc.
Best course of action would be to scan and retrieve the ABS code(s), this can help with the diagnostics.

Here is a helpful guide

https://www.2carpros.com/articles/abs-warning-light-on-easy-repair-guide

Please let me what codes you are able to retrieve or if you have any questions.
Thank you.
Image (Click to enlarge)
Attached Media
Jun 13, 2022 at 2:56 PM
Advertisement