Diagnostic Starting Point - Vehicle

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2011 GMC Yukon XL, 2011 GMC Yukon, 2011 Chevrolet Tahoe, 2011 Chevrolet Suburban, and 2011 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

Begin the system diagnosis with Diagnostic System Check - Vehicle (with HP2) , Diagnostic System Check - Vehicle (without HP2) . The Diagnostic System Check - Vehicle will provide a complete strategy to locate and repair a mechanical or electrical vehicle fault. Not following this strategy may cause additional diagnostic time and/or misdiagnosis.

The Diagnostic System Check - Vehicle will provide the following strategy:

When to verify the customer concern and identify related bulletins, recalls and preliminary information
When to identify a control module that is not communicating, a control module that has set a DTC, and the DTC diagnostic priority
When to address power mode concerns
When to verify the engine cranks and runs
When to diagnose symptom related concerns