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 CARSECTION 402 (FRAME AND UNDERBODY)DESCRIPTION AND OPERATIONRUNNING BOARD DESCRIPTIONSHIPPING MODE UNLOCK PROCEDURE
2009 Chevrolet Tahoe Base, 4.8 C
Shipping Mode Unlock Procedure
2009 Chevrolet Tahoe Base, 4.8 CSECTION Shipping Mode Unlock Procedure
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2011 GMC Yukon XL, 2011 GMC Yukon, 2011 Chevrolet Tahoe, 2011 Chevrolet Suburban, and 2011 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
The vehicles with the power running boards are shipped from the assembly plant in a shipping mode. The boards are locked in a retracted position during shipping. To unlock the boards for normal operation, perform the following steps:
- Open both drivers side doors
- Set the park brake
- Toggle the disable switch three times within 20 seconds after turning the ignition switch to the "On" position
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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.