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 MANUALSCHEVROLET2008CHEVY EXPRESS G2500, VAN CARGO, 6.6 6REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1672 (HYBRID CONTROLS - DTC P181C TO DTC P2797)DTC P2797CIRCUIT/SYSTEM TESTINGMOTOR/OPEN SHORTNOTES
2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6
Motor/Open Short: Notes
2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6SECTION Notes
WARNING: This page is about a different car, the 2009 GMC Sierra and 2009 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
This display indicates the ATFP control module has detected one of the following pump motor current conditions:
- At least one phase current is more than 70 A.
- Commanded current is more than 5 A and actual current in any phase is less than 2 A.
- Ignition OFF, disconnect the ATFP control module connector X2.
- Using the Auxiliary Fluid Pump Specification table listed below, test the resistance between the X2 circuits of the pump connector as indicated.
- If any of the circuits are not within the specified range, replace the pump assembly and repeat the Circuit/System Verification.
- If all circuits test normal, replace the ATFP control module and repeat Circuit/System Verification.
Auxiliary Fluid Pump Specification
| Pump Connector X2 Terminal | Pump Connector X2 Terminal | Specified Range |
|---|---|---|
| A | E | < 0.5 OHMS |
| A | C | < 0.5 OHMS |
| C | E | < 0.5 OHMS |
| A | F | OL |
| C | F | OL |
| E | F | OL |
| A | Chassis Ground | OL |
| C | Chassis Ground | OL |
| E | Chassis Ground | OL |
RENDER: 1.0x
NO RELATED
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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.