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Home >> GMC >> 2000 >> Yukon Base, 5.3 T, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 6 (Anti-Lock Brake System) >> Diagnosis & Testing >> Diagnostic System Check >> System Description

System Description

WARNING: This page is about a different car, the 1999 GMC Sierra and 1999 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.

The diagnostic system check is an organized approach to identifying a problem created by an ABS malfunction. It must be the starting point of any ABS complaint diagnosis because it directs to the next logical step in diagnosing the complaint.

Serial data (Class 2) is exchanged by EBCM through harness connector C2, terminal B6. The EBCM is supplied battery voltage through harness connector C1, terminal "B", switched ignition voltage through harness connector C2, terminal A1. Ground is provided through harness connector C1, terminal "A" and C2 terminal A7.

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