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 204 (VEHICLE DIAGNOSTIC INFORMATION)SPECIFICATIONSRADIO SCAN TOOL INFORMATION (WITHOUT NAVIGATION RADIO)
2008 Chevrolet Chevy Express G3500, Van Passenger Extended
Radio Scan Tool Information (without Navigation Radio)
2008 Chevrolet Chevy Express G3500, Van Passenger ExtendedSECTION Radio Scan Tool Information (without Navigation Radio)
WARNING: This page is about a different car, the 2008 Cadillac STS. However, it is still accessible from the selected car via links, so may be relevant.
Radio Scan Tool Data Parameters
| Parameter | System State | Expected Value | Definition |
|---|---|---|---|
| Operating Conditions: Ignition ON | |||
| Amplifier (U85 Only) | - | Varies | The scan tool displays Present or Not Present indicating the status of the audio amplifier. |
| Antenna Signal | - | Varies | The scan tool displays 0-300. The signal from the antenna is measured in dBuV. |
| Band Number | - | Varies | The scan tool displays AM/FM1/FM2/XM1/XM2. This is the current band setting. |
| Cassette Cut Tape | - | Varies | The scan tool displays 0-999. This is the number of cut tape errors the radio has recorded |
| Cass. Load/Unload Errors | - | Varies | The scan tool displays 0-999. This is the number of cassette loading and unloading errors the radio has recorded. |
| Cassette Inserted | - | Varies | The scan tool displays Yes/No indicating if a cassette tape is detected. |
| Cassette Metal | - | Varies | The scan tool displays Metal/Not Metal indicating if a metal type cassette tape is detected. |
| Cassette Side | - | Varies | The scan tool displays Top/Bottom indicating the current side being played of an inserted cassette tape. |
| Cassette Tight Tape | - | Varies | The scan tool displays 0-999. This is the number of cassette tight tape errors the radio has recorded. |
| CD Changer | - | Varies | The scan tool displays Not Connected/Connected indicating the status of a CD changer. |
| CD Focus Errors | - | Varies | The scan tool displays 0-999. This is the number of CD focus errors the radio has recorded |
| CD Inserted | - | Varies | The scan tool displays Yes/No indicating if a CD is inserted in the CD player. |
| CD Load/Unload Errors | - | Varies | The scan tool displays 0-999. This is the number of CD loading and unloading errors the radio has recorded. |
| CD Tracking Errors | - | Varies | The scan tool displays 0-999. This is the number of CD tracking errors the radio has recorded. |
| Driver Number | - | Varies | The scan tool displays Unknown/Diver 1/Driver 2. This is the memory position the driver has selected. |
| New VIN Counter | - | Varies | This numeric value increments each time the VIN is commanded to re-learn. |
| Phone | - | Present | The scan tool displays Present or Not Present. This indicates if the radio detects the vehicle is equipped with OnStar. |
| Preset Control | - | Varies | The scan tool displays Not A Preset/Preset 1/ Preset 2/ Preset 3/ Preset 4/ Preset 5/ Preset 6. This is the status of the preset when the radio is on a station. |
| Single CD Track Number | - | Varies | The scan tool displays 0-255. This indicates the CD track number currently being played. |
| Source | - | Varies | The scan tool displays Off/Tuner/ Radio Monitor/ Cassette/ CD/ RDS Interrupt/ ICDX/ CD Changer/ Phone Stereo/ MD Changer/ Single MD/ Nav Voice Stereo/ Enhanced Stereo/ AD Stereo/ Phone Mono/ Nav Voice Mono/ Enhanced mono/ AD Mono/ RSE Stereo/ DRR Tuner. This is the current source/type of the signal being received/played. |
| Theft Armed | - | Learned VIN | The scan tool displays No VIN/ Learned VIN. |
| Theft Lock | - | Unlocked | The scan tool displays Unlocked/Locked. The scan tool displays locked when the radio receives the incorrect VIN number. |
| Total Cassette Hours | - | Varies | The scan tool displays 0-999 hrs. This is the total number of hours the cassette player has been used. |
| Total CD Hours | - | Varies | The scan tool displays 0-999 hrs. This is the total number of hours the CD player has been used. |
Radio Scan Tool Output Controls
| Scan Tool Output Control | Description |
|---|---|
| Left Front Speaker | Commanding the speaker ON will turn OFF all speakers except this speaker, including door tweeter if equipped. Commanding the speaker OFF will turn OFF all speakers. |
| Left Rear Speaker | Commanding the speaker ON will turn OFF all speakers except this speaker, including door tweeter if equipped. Commanding the speaker OFF will turn OFF all speakers. |
| Right Front Speaker | Commanding the speaker ON will turn OFF all speakers except this speaker. Commanding the speaker OFF will turn OFF all speakers. |
| Right Rear Speaker | Commanding the speaker ON will turn OFF all speakers except this speaker. Commanding the speaker OFF will turn OFF all speakers. |
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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.