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Home >> Chevrolet >> 2001 >> Chevy Express G2500, Van Cargo Extended, 6.5 F >> Repair and Diagnosis >> Accessories & Equipment >> Communication Devices >> Body Control Modules >> System Tests >> Test B: Scan Tool Does Not Communicate With Class 2 Device >> Diagnostic Aids

Diagnostic Aids

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.