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 MANUALSCHEVROLET2009SILVERADO 2500 2WD V8-6.6L DSL TURBOREPAIR AND DIAGNOSISTESTING AND INSPECTIONSCAN TOOL TESTING AND PROCEDURESGLOW PLUG CONTROL MODULE SCAN TOOL INFORMATION
2009 Chevrolet Silverado 2500 2WD V8-6.6L DSL Turbo
Glow Plug Control Module Scan Tool Information
2009 Chevrolet Silverado 2500 2WD V8-6.6L DSL TurboSECTION Glow Plug Control Module Scan Tool Information
Glow Plug Control Module Scan Tool Information
The GPCM Scan Tool Data List contains all glow plug control module related parameters that are available on the scan tool. The list is arranged in alphabetical order.
Use the GPCM Scan Tool Data List only after the following is determined:
* The Diagnostic System Check - Vehicle is completed.
* No diagnostic trouble codes (DTCs) are present.
* The on-board diagnostics are functioning properly.
Scan tool values from a properly running engine may be used for comparison with the engine you are diagnosing. The GPCM Scan Tool Data List represents values that would be seen on a normal running engine.
Important: A scan tool that displays faulty data should not be used. The scan tool problem should be reported to the manufacturer. Use of a faulty scan tool can result in misdiagnosis and unnecessary parts replacement.
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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.