Preliminary Inspection

2000 Chevrolet Chevy Express G3500, Van Passenger, 7.4 JSECTION Preliminary Inspection

Before proceeding with specific testing, check condition of appropriate power supply fuse. See WIRING DIAGRAMSΒ  . Check power seat system operation. Ensure power accessory circuit breaker is okay. Ensure ground connections are clean and tight. Check for broken or partially broken wires inside insulation which could cause system malfunction, but prove good in a continuity/voltage check with system disconnected. These circuits may be intermittent or have high resistance when loaded. If possible, circuits should be checked by monitoring voltage drop with system operational (under load). Check for proper installation of aftermarket electronic equipment.

RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.