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 MANUALSCHEVROLET2000CHEVY EXPRESS G3500, VAN CARGO, 4.3 WREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTANTI-THEFT SYSTEMSPOWER DOOR LOCK SYSTEMSYMPTOM TESTSTEST A: POWER DOOR LOCKS INOPERATIVE
2000 Chevrolet Chevy Express G3500, Van Cargo, 4.3 W
Test A: Power Door Locks Inoperative
2000 Chevrolet Chevy Express G3500, Van Cargo, 4.3 WSECTION Test A: Power Door Locks Inoperative
- Check PWR ACCY fuse "A" in instrument panel fuse block. If fuse is open, go to step 6 . If fuse is okay, go to next step.
- Disconnect power door lock relay connector. Connect test light between power door relay connector terminal "C" (Orange wire) and ground. See Fig 1 . If test light is on, go to next step. If test light is off, go to step 7 .
- Using DVOM, check continuity between power door lock relay connector terminal "D" (Black wire) and ground. See Fig 1 . If continuity is present, go to next step. If continuity is not present, go to step 8 .
- Disconnect left front door lock actuator motor connector. Using DVOM, check continuity between door lock actuator connector terminal "A" (Tan wire) and power door lock relay connector terminal "B" (Tan wire). See Fig 1 . If continuity is present, go to next step. If continuity is not present, go to step 9 .
- Using DVOM, check continuity between door lock actuator connector terminal "B" (Gray wire) and power door lock relay connector terminal "E" (Gray wire). See Fig 1 . If continuity is present, go to step 10 . If continuity is not present, go to step 11 .
- Repair short to ground in Orange wire between instrument panel fuse block and power door lock relay on door lock switches. After repairs, go to step 12 .
- Repair open in Orange wire between instrument panel fuse block and power door lock relay. After repairs, go to step 12 .
- Repair open in Black wire between power door lock relay and ground. After repairs, go to step 12 .
- Repair open in Tan wire between power door lock relay and splice S243. After repairs, go to step 12 .
- Replace power door lock relay. After repairs, go to step 12 .
- Repair open in Gary wire between power door lock relay and splice S244. After repairs, go to next step.
- Operate system to verify repair.
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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.