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 MANUALSCHEVROLET1997CHEVY VAN G2500, VAN CARGO EXTENDED, 6.5 FREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROLS - TESTS W/CODES - 6.5L DIESEL (G SERIES)DIAGNOSTIC TROUBLE CODESDTC P1218 - INJECTION PUMP CALIBRATION CIRCUITDIAGNOSTIC PROCEDURES
1997 Chevrolet Chevy Van G2500, Van Cargo Extended, 6.5 F
Diagnostic Procedures
1997 Chevrolet Chevy Van G2500, Van Cargo Extended, 6.5 FSECTION Diagnostic Procedures
- Perform Powertrain ON-BOARD DIAGNOSTIC (OBD) SYSTEM CHECK. See the BASIC TESTING - 6.5L DIESEL article. Then go to next step.
- Check if any other DTCs are set. If any other DTCs are set, go to appropriate DTC. If any other DTCs are not set, go to next step.
- Check connection at fuel solenoid driver. Clear DTCs and cycle engine. If DTC clears, go to step 5). If DTC does not clear, go to next step.
- Replace fuel injection pump. If fuel injection pump is replaced, new pump must be timed. See the ADJUSTMENTS - 6.5L DIESEL article. After replacing injection pump, go to next step.
- DTC is intermittent. If no additional DTCs are set, see DIAGNOSTIC AIDS. If any additional DTCs are set, go to applicable DTC test.
- Using scan tool, select DTC, CLEAR INFO. Start and warm engine to normal operating temperature. Select DTC, SPECIFIC, then enter DTC P1218. Operate vehicle within the conditions for setting this DTC. If scan tool indicates that this test ran and passed, go to next step. If scan tool does not indicate that this test ran and passed, repeat step 2).
- Using scan tool, select CAPTURE INFO, REVIEW INFO. If any undiagnosed DTC(s) are displayed, go to applicable DTC test.
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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.