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HOMESERVICE MANUALSCHEVROLET2008CHEVY EXPRESS G2500, VAN CARGO, 6.6 6REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1807 (ENGINE COOLING SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESDTC P2600-P2603TYPICAL SCAN TOOL DATA
2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6

Typical Scan Tool Data

2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6SECTION Typical Scan Tool Data
WARNING: This page is about a different car, the 2009 Cadillac STS. However, it is still accessible from the selected car via links, so may be relevant.
Aux. Coolant Pump Ckt. Short Gnd, Open, and Short Volts Test Status - Component Commanded OFF

Circuit Short to Ground Open Short to Voltage
Operating Conditions:  Component Commanded OFF
Parameter Normal Range:  The following illustrates the normal parameter state with no circuit conditions:
  • Component OFF - OK for Open/Short Gnd test and Not Run for Short to Volts test
  • Component ON - Not Run for Open/Short Gnd test and OK for Short to Volts test
Ignition Voltage Fault Fault -
Auxiliary Coolant Pump Relay Control Fault Fault Not Run
Aux. Coolant Pump Ckt. Short Gnd, Open, and Short Volts Test Status - Component Commanded ON

Circuit Short to Ground Open Short to Voltage
Operating Conditions:  Component Commanded ON
Parameter Normal Range:  The following illustrates the normal parameter state with no circuit conditions:
  • Component OFF - OK for Open/Short Gnd test and Not Run for Short to Volts test
  • Component ON - Not Run for Open/Short Gnd test and OK for Short to Volts test
Ignition Voltage Not Run Not Run -
Auxiliary Coolant Pump Relay Control Not Run Not Run Fault
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.