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 MANUALSCHEVROLET2001CHEVY EXPRESS G3500, VAN PASSENGER EXTENDED, 6.5 FREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 2 (ENGINE CONTROLS - SELF-DIAGNOSTICS - 4.3L)DIAGNOSTIC TESTSDTC P0200: FUEL INJECTOR CONTROL CIRCUITDIAGNOSTIC PROCEDURES
2001 Chevrolet Chevy Express G3500, Van Passenger Extended, 6.5 F
Diagnostic Procedures
2001 Chevrolet Chevy Express G3500, Van Passenger Extended, 6.5 FSECTION Diagnostic Procedures
WARNING: This page is about a different variant/trim than selected.
- Perform powertrain diagnostic system check. See POWERTRAIN DIAGNOSTIC SYSTEM CHECK under SELF-DIAGNOSTIC SYSTEM. After performing powertrain diagnostic system check, go to next step.
- Using scan tool, clear DTCs. Idle engine at normal operating temperature. Using scan tool, monitor MISFIRE CURRENT COUNTERS. If any counters are incrementing, go to step 4. If no counters are incrementing, go to next step.
- Observe FREEZE FRAME/FAILURE RECORDS data for this DTC. Turn ignition off for 30 seconds. Start engine. Operate vehicle within code enable criteria or as close to FREEZE FRAME/FAILURE RECORDS data as possible. If DTC failed this ignition cycle, go to next step. If DTC did not fail this ignition cycle, see DIAGNOSTIC AIDS .
- Turn ignition off. Disconnect fuel injector connector. See COMPONENT LOCATIONS . Turn ignition on, engine off. Using test light connected to ground, probe Pink wire of appropriate fuel injector. If test light is on, go to next step. If test light is off, go to step 11.
- Connect Injector Test Lamp (J 34730-375) between appropriate fuel injector harness connector terminals. Crank engine. If test light flashes, go to step 9. If test light does not flash, go to next step.
- If test light remains on at all times, go to step 8. If test light does not remain on at all times, go to next step.
- Check control circuit of appropriate fuel injector for open and short to voltage. If problem was found, repair as necessary. After repairs, go to step 14. If problem was not found, go to step 10.
- Check control circuit of appropriate fuel injector for short to ground. If problem was found, repair as necessary. After repairs, go to step 14. If problem was not found, go to step 13.
- Check fuel injector connector for poor connections. If problem was found, repair as necessary. After repairs, go to step 14. If problem was not found, go to step 12.
- Check PCM connectors for poor connections. If problem was found, repair as necessary. After repairs, go to step 14. If problem was not found, go to step 13.
- Repair open or short to ground in Pink wire between fuel injector and underhood junction block. After repairs, go to step 14.
- Replace fuel injector. After repairs, go to step 14.
- Replace PCM. Program PCM. See POWERTRAIN CONTROL MODULE under PROGRAMMING. After repairs, go to next step.
- Using scan tool, clear DTCs. Turn ignition off for 30 seconds. Start engine. Operate vehicle within code enable criteria. If DTC runs and passes, go to next step. If DTC does not run and pass, go to step 2.
- Using scan tool, observe stored information. If scan tool displays any DTCs that have not been diagnosed, see DIAGNOSTIC TROUBLE CODE DEFINITIONS . If scan tool does not display any DTCs, system is okay.
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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.