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 MANUALSCHEVROLET2009TAHOE BASE, 4.8 CREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 12 (HYBRID ENGINE CONTROLS - DTC P181C TO DTC P2797)DTC P2797CIRCUIT/SYSTEM TESTINGCURRENT HIGH/LO
2009 Chevrolet Tahoe Base, 4.8 C
Current High/Lo
2009 Chevrolet Tahoe Base, 4.8 CSECTION Current High/Lo
WARNING: This page is about a different variant/trim than selected.
- This display indicates the ATFP control module has monitored motor current that is outside the normal range for a given motor speed.
- Inspect for the following conditions:
- Low or cavitating automatic transmission fluid
- Poor terminal connection or wiring degradation
- External indication of ATFP pump motor damage
- If none of the conditions are observed, replace the ATFP motor/pump assembly and the ATFP control module.
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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.