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 MANUALSCHEVROLET1998SUBURBAN K2500, 7.4 J, PART TIMEREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 44 (ANTI-THEFT SYSTEM)
1998 Chevrolet Suburban K2500, 7.4 J, Part Time
Section 44 (Anti-Theft System)
1998 Chevrolet Suburban K2500, 7.4 J, Part TimeSECTION Section 44 (Anti-Theft System)
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 1998 GMC Savana Special, 1998 GMC Savana Camper Special, 1998 GMC Savana, 1998 Chevrolet RV Cutaway, and 1998 Chevrolet Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
- Description
- Operation
- Component Locations
- Programming
- Trouble Shooting
- Self-Diagnostic System
- Diagnostic Tests
- DTC B0688: Security Indicator Light Circuit High
- DTC B2947: PASSLOCK(R) Sensor Power Circuit Low
- DTC B2948: PASSLOCK(R) Sensor Power Circuit High
- DTC B2957: PASSLOCK(R) Sensor Data Circuit Low
- DTC B2958: PASSLOCK(R) Sensor Data Circuit High
- DTC B2960: Sensor Data Incorrect But Valid
- DTC B3031: Controller In Learn Mode
- DTC B3033: System Indicates Tamper
- DTC C0559: Checksum Error
- DTC U1016: Loss Of Class 2 Communication With VCM
- DTC U1255: Class 2 Communication Malfunction
- System Tests
- Removal & Installation
- Wiring Diagrams
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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.