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 MANUALSCHEVROLET2011TAHOE BASE, 5.3 0, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1740 (AUTOMATIC TRANSMISSION - ALLISON - DTC P0880 TO DTC P2771)DTC P0880CIRCUIT/SYSTEM TESTING
2011 Chevrolet Tahoe Base, 5.3 0, 4WD
Circuit/System Testing
2011 Chevrolet Tahoe Base, 5.3 0, 4WDSECTION Circuit/System Testing
WARNING: This page is about a different car, the 2010 GMC Sierra, 2010 GMC Cab & Chassis Sierra, 2010 Chevrolet Silverado, and 2010 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition OFF, and all vehicle systems OFF. It may take up to 2 minutes for all vehicle systems to power down. Disconnect the harness connector at the TCM.
- Test for less than 3 ohms between ground circuit terminal 9 and battery ground and between ground circuit terminal 69 and battery ground.
- If greater than the specified range, repair the affected ground circuit.
- Verify that a test lamp illuminates between the battery B+ circuits terminal 10 and ground and terminal 70 and ground.
- If the test lamp does not illuminate, repair the affected B+ circuit.
- If circuits test normal, replace the TCM.
NOTE:
You must perform the Circuit/System Testing first.
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.