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 TESTINGATFPCM OVER TEMP
2009 Chevrolet Tahoe Base, 4.8 C
ATFPCM Over temp
2009 Chevrolet Tahoe Base, 4.8 CSECTION ATFPCM Over temp
WARNING: This page is about a different variant/trim than selected.
- This display indicates the ATFP control module circuit board has reached a temperature of 115-125°C (239-257°F).
- Measure the actual temperature of the ATFP control module case.
- If actual temperature is the same or more than the value range, no action is necessary.
- If actual temperature is less than the value range, replace 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.