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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 16 (Body Control Modules) >> Diagnostic Tests >> DTC U1300: Class 2 Serial Data Link Low >> Diagnostic Aids

Diagnostic Aids

WARNING: This page is about a different car, the 2001 GMC Safari and 2001 Chevrolet Astro. However, it is still accessible from the selected car via links, so may be relevant.

This DTC cannot be retrieved with a current status. Diagnosis of a current U1300 is accomplished via symptom. See TEST D: SCAN TOOL DOES NOT COMMUNICATE WITH CLASS 2 DEVICE  under SYSTEM TESTS. An intermittent condition is most likely caused by a short to ground condition along class 2 serial data line.

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