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.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSCHEVROLET2009TAHOE BASE, 4.8 CREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 12 (HYBRID ENGINE CONTROLS - DTC P181C TO DTC P2797)DTC P2797CIRCUIT/SYSTEM TESTINGNOTES
2009 Chevrolet Tahoe Base, 4.8 C
Circuit/System Testing: Notes
2009 Chevrolet Tahoe Base, 4.8 CSECTION Notes
WARNING: This page is about a different variant/trim than selected.
- Inspect for DTC P0C2B. Diagnose P0C2B before performing this procedure.
- Ignition ON, engine OFF, observe the Aux. Trans. Fluid Pump Fault Status 1 and Aux. Trans. Fluid Fault Status 2 displays with the scan tool.
- Command the aux. trans. fluid pump speed to 50 percent with the scan tool while observing the fault status displays.
- Refer to the applicable diagnostic procedure below for the fault status indicated by the scan tool display.
- If No Fault status is displayed, review the Freeze Frame/Failure Records and perform the diagnosis indicated by the Fault Status parameter display.
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.