Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2006SUBURBAN C2500, 6.0 UREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 199 (CHARGING SYSTEM)SELF-DIAGNOSTIC SYSTEMNOTES
2006 Chevrolet Suburban C2500, 6.0 U
Self-Diagnostic System: Notes
2006 Chevrolet Suburban C2500, 6.0 USECTION Notes
WARNING: This page is about a different car, the 2003 GMC Savana Special, 2003 GMC Savana Camper Special, 2003 GMC Savana, and 2003 Chevrolet Chevy Express. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
The following test is written specifically for Tech 2 scan tool. A generic scan tool may not be capable of performing all necessary test functions.
Begin system diagnosis with engine electrical diagnostic system check. Diagnostic system check will provide following information:
- Identification of control module(s) which command system.
- Ability of control module(s) to communicate through serial data circuit.
- Identification of any stored DTCs and their current status.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.