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 G2500, VAN CARGO, 6.6 6REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1592 (DTC INDEX)THEFT DETERRENT DTCS
2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6
Theft Deterrent DTCS
2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6SECTION Theft Deterrent DTCS
WARNING: This page is about a different car, the 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, and 2003 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
THEFT DETERRENT DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description |
|---|---|
| DTC B2947 | Short To Ground On Passlock™ Sensor Power Circuit |
| DTC B2948 | Sensed Battery Voltage |
| DTC B2957 | BCM Signal Input Voltage Low |
| DTC B2958 | BCM Signal Input Voltage High |
| DTC B2960 | Valid But Different Code Value Than Previously Learned From Passlock™ Sensor |
| DTC B3031 | BCM In Learn Mode But Does Not See A Valid Passlock™ Sensor Code |
| DTC B3033 | BCM Is Reading A Tamper Code From Passlock™ Sensor |
| DTC P1626 | PCM Has Not Established Communications With BCM |
| DTC P1631 | PCM Did Not Receive A Valid Password |
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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.