Test B: Anti-Lock Light Is On At All Times - No DTCS: Diagnosis
WARNING: This page does not describe the selected car, but rather 54 other vehicles, including the 1999 Oldsmobile Bravada, 1999 GMC Yukon, 1999 GMC Suburban, 1999 GMC Sonoma, and 1999 GMC Savana Special. However, it is still accessible from the selected car via links, so may be relevant.
- Perform Diagnostic System Check. If diagnostic system check has been performed, go to next step. If not, go to DIAGNOSTIC SYSTEM CHECK.
- Turn ignition off. Disconnect 10-pin EBCM harness connector from EBCM. Turn ignition switch to RUN position. If ANTI-LOCK indicator light illuminates and stays illuminated, go to step 4) . If not, go to next step.
- Replace EBCM.
- Repair short to ground in ANTI-LOCK indicator light control circuit between instrument cluster and EBCM.