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 MANUALSCHEVROLET2002C3500 HD 8.1 G, AUTOMATICREPAIR AND DIAGNOSISENGINE PERFORMANCESYSTEMENGINE CONTROLS - 8.1LDIAGNOSTIC INFORMATION AND PROCEDURESDTC P1115TEST DESCRIPTION

2002 Chevrolet C3500 HD 8.1 G, Automatic

Test Description

2002 Chevrolet C3500 HD 8.1 G, AutomaticSECTION Test Description

The number below refers to the step number on the diagnostic table.

5. If there is no driveability complaint associated with DTC and if the DTC does not reset, then the system is OK.

Fig 1: DTC P1115

Courtesy of GENERAL MOTORS CORP.

RENDER: 1.0x

NO RELATED

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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.