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.
1999 Chevrolet Cutaway 7.4 JFACTORY OEM SERVICE PROCEDURE
Anti-Theft System DTCS
ANTI-THEFT SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description |
|---|---|
| B0687 | SECURITY SYSTEM INDICATOR LOW |
| B0688 | SECURITY SYSTEM INDICATOR CIRCUIT HIGH (DOMESTIC) |
| B0688 | SECURITY SYSTEM INDICATOR CIRCUIT HIGH (EXPORT) |
| B1007 | EEPROM WRITE ERROR |
| B2947 | SECURITY SYSTEM SENSOR POWER CKT LOW |
| B2948 | SECURITY SYSTEM SENSOR POWER CKT HIGH |
| B2957 | SECURITY SYSTEM SENSOR DATA CIRCUIT LOW |
| B2958 | SECURITY SYSTEM SENSOR DATA CIRCUIT HIGH |
| B2960 | SECURITY SYSTEM SENSOR DATA INCORRECT BUT VALID |
| B3031 | SECURITY SYSTEM CONTROLLER IN LEARN MODE |
| B3033 | SECURITY SYSTEM INDICATES TAMPER |
| C0559 | EEPROM CHECKSUM ERROR (DOMESTIC) |
| U1016 | PCM CLASS 2 SERIAL DATA LINE FAULT |
| U1193 | LOSS OF VIM CLASS 2 COMMUNICATION |
Factory Service Tools
Use the Manual With the Right Hardware
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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.
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