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 MANUALSCHEVROLET2008CHEVY EXPRESS G3500, VAN PASSENGER EXTENDEDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 924 (HYBRID/EV CONTROL SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESDTC P16F2CONDITIONS FOR SETTING THE DTC
2008 Chevrolet Chevy Express G3500, Van Passenger Extended
Conditions for Setting the DTC
2008 Chevrolet Chevy Express G3500, Van Passenger ExtendedSECTION Conditions for Setting the DTC
WARNING: This page is about a different car, the 2012 GMC Yukon, 2012 Chevrolet Tahoe, and 2012 Cadillac Escalade. However, it is still accessible from the selected car via links, so may be relevant.
Condition 1
- No internal mode switch direction switch DTCs are set.
- A valid internal mode switch direction indicated by the internal mode switch does not match the direction indicated by the hybrid powertrain control module software.
Condition 2
- No internal mode switch direction switch DTCs are set.
- Two valid internal mode switch directions are indicated at the same time.
Condition 3
- One internal mode switch direction switch circuit has failed.
- The hybrid powertrain control module calculates a transmission direction based upon the remaining internal mode switch circuits but it does not match the direction indicated by the hybrid powertrain control module software.
Condition 4
- Multiple internal mode switch directions and one internal mode switch direction switch circuit has failed.
- Based upon the remaining internal mode switch circuits the hybrid powertrain control module calculated two directions at the same time.
Condition 5
- More than one internal mode switch direction circuit has failed and the hybrid powertrain control module cannot calculate a transmission direction.
- Ignition voltage is 9.5-18 V.
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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.