What could cause the abs and brake light to come on a 2001 gmc safari?

The ABS and brake lights on a 2001 GMC Safari can be triggered by several issues, including low brake fluid levels, a malfunctioning ABS module, or a faulty wheel speed sensor. Additionally, a problem with the brake system, such as worn brake pads or a malfunctioning brake booster, could also activate these warning lights. It's advisable to check the brake fluid level and inspect the brake system for any visible issues, and if the lights persist, a diagnostic scan may be necessary to identify the specific fault.