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 2291 (KEYLESS ENTRY SYSTEM AND REMOTE FUNCTIONS)DIAGNOSTIC INFORMATION AND PROCEDURESDTC B3119DIAGNOSTIC FAULT INFORMATION
2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6
Diagnostic Fault Information
2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6SECTION Diagnostic Fault Information
WARNING: This page is about a different car, the 2010 Cadillac STS. However, it is still accessible from the selected car via links, so may be relevant.
| Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
| Keyless Entry Antenna - Signal (4) | B3119 02 | B3119 05 | B3119 05 | - |
| Keyless Entry Antenna - Low Reference (4) | - | B3119 05 | - | - |
| Keyless Entry Antenna - Signal (5) | B3120 02 | B3120 05 | B3120 05 | - |
| Keyless Entry Antenna - Low Reference (5) | - | B3120 05 | - | - |
| Keyless Entry Antenna - Signal (3) | B3121 02 | B3121 05 | B3121 05 | - |
| Keyless Entry Antenna - Low Reference (3) | - | B3121 05 | - | - |
| Keyless Entry Antenna - Signal (2) | B3123 02 | B3123 04 | B3123 04 | - |
| Keyless Entry Antenna - Low Reference (2) | - | B3123 04 | - | - |
| Keyless Entry Antenna - Signal (1) | B3123 02 | B3123 04 | B3123 04 | - |
| Keyless Entry Antenna - Low Reference (1) | - | B3123 04 | - | - |
| Keyless Entry Active Antenna Supply Voltage | B3122 04 | B3122 04 | B3122 04 | - |
| Keyless Entry Active Antenna Data Signal | B3122 04 | B3122 04 | B3122 04 | - |
| Keyless Entry Active Antenna Clock Signal | B3122 04 | B3122 04 | B3122 04 | - |
| Keyless Entry Active Antenna Low Reference | - | B3122 04 | - | - |
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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.