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Home >> GMC >> 2000 >> Yukon Base, 4.8 V, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 8 (Body Control Modules - Old Style) >> Self-Diagnostic System >> Scan Tool Does Not Communicate With Class 2 Device >> Diagnostic Aids

Diagnostic Aids

WARNING: This page is about a different variant/trim than selected.

When class 2 serial data line is shorted to ground, DTC U1300 will be set. When class 2 serial data line is shorted to voltage, DTC U1301 will be set.