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 MANUALSCHEVROLET2000C TAHOE 2WD V8-5.7L VIN RREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSRELAYS AND MODULES - COMPUTERS AND CONTROL SYSTEMSBODY CONTROL MODULETESTING AND INSPECTIONREADING AND CLEARING DIAGNOSTIC TROUBLE CODESDTC DISPLAY ORDER
2000 Chevrolet C Tahoe 2WD V8-5.7L VIN R
DTC Display Order
2000 Chevrolet C Tahoe 2WD V8-5.7L VIN RSECTION DTC Display Order
In the diagnostic mode, diagnostic trouble codes (DTCs) are displayed in numerical order. The first DTC displayed is always DTC 12, followed by any current DTCs (21 to 24) or any history DTCs (31 to 34). Remote control door lock transmitter diagnostic DTCs (41 to 45) will then be displayed if activated while in the diagnostic mode. The last DTC displayed is the begin configuration display (55). The first number following DTC 55 is the hardware configuration. The second number is the software configuration. DTC 55 and the 2 configuration numbers are always displayed. After the configuration numbers are displayed, the entire list is repeated beginning with DTC 12. System faults are stored as current or history DTCs. When working on systems controlled by the body control module, always refer to this section and test for DTCs.
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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.