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HOMESERVICE MANUALSCHEVROLET2008CHEVY EXPRESS G2500, VAN CARGO, 6.6 6REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1366 (ENGINE CONTROLS AND FUEL - 4.4L - DTC P0010 TO DTC P0158)DTC P0033COMPONENT TESTING
2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6

Component Testing

2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6SECTION Component Testing
WARNING: This page is about a different car, the 2008 Cadillac STS. However, it is still accessible from the selected car via links, so may be relevant.

Static Test

  1. Ignition OFF, disconnect the harness connector at the SCB solenoid.
  2. Test for 30-55 ohms between the control terminal and the voltage supply terminal of the SCB solenoid.
    • If the resistance is not within the specified range, replace the SCB solenoid.

Dynamic Test

  1. Install a 3A fused jumper wire between the ignition supply circuit terminal and 12 volts. Install a jumper wire between the control terminal and ground.
  2. Toggle the jumper wire between the control terminal and ground.
  3. Feel and listen for the operation of the SCB solenoid.
    • If the function does not perform as specified, replace the SCB solenoid.
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:

  • • 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.