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 MANUALSCHEVROLET1998EXPRESS 1 TON VAN V8-5.7L VIN RREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSRELAYS AND MODULES - COMPUTERS AND CONTROL SYSTEMSBODY CONTROL MODULETECHNICAL SERVICE BULLETINSANTITHEFT - REVISED SYSTEM CHECK AND DTC B2958 TABLES
1998 Chevrolet Express 1 Ton Van V8-5.7L VIN R
Antitheft - Revised System Check and DTC B2958 Tables
1998 Chevrolet Express 1 Ton Van V8-5.7L VIN RSECTION Antitheft - Revised System Check and DTC B2958 Tables
File In Section: 9 - Accessories
Bulletin No.: 86-90-02
Date: February, 1998
SERVICE MANUAL UPDATE
Subject:
Section 9D Theft Deterrent System (Passlock) Revised System Check and DTC B2958 Tables, Also Added Table 1
Models:
1998 Chevrolet and GMC C/K, G, M/L Models
This bulletin revises the Theft Deterrent System (Passlock) system check and DTC B2958 Tables. Also, a new Table I has been introduced. This bulletin covers all of the 1998 C/K, M/L, and G Trucks.
8A-1-1 ELECTRICAL DIAGNOSIS
ELECTRICAL DIAGNOSIS 8A-1-2
8A-1-3 ELECTRICAL DIAGNOSIS
ELECTRICAL DIAGNOSIS 8A-1-4
8A-1-5 ELECTRICAL DIAGNOSIS
ELECTRICAL DIAGNOSIS 8A-1-6
8A-1-7 ELECTRICAL DIAGNOSIS
ELECTRICAL DIAGNOSIS 8A-1-8
8A-1-9 ELECTRICAL DIAGNOSIS
ELECTRICAL DIAGNOSIS 8A-1-10
8A-1-11 ELECTRICAL DIAGNOSIS
ELECTRICAL DIAGNOSIS 8A-1-12
Bulletin No.: 86-90-02
Date: February, 1998
SERVICE MANUAL UPDATE
Subject:
Section 9D Theft Deterrent System (Passlock) Revised System Check and DTC B2958 Tables, Also Added Table 1
Models:
1998 Chevrolet and GMC C/K, G, M/L Models
This bulletin revises the Theft Deterrent System (Passlock) system check and DTC B2958 Tables. Also, a new Table I has been introduced. This bulletin covers all of the 1998 C/K, M/L, and G Trucks.
8A-1-1 ELECTRICAL DIAGNOSIS
ELECTRICAL DIAGNOSIS 8A-1-2
8A-1-3 ELECTRICAL DIAGNOSIS
ELECTRICAL DIAGNOSIS 8A-1-4
8A-1-5 ELECTRICAL DIAGNOSIS
ELECTRICAL DIAGNOSIS 8A-1-6
8A-1-7 ELECTRICAL DIAGNOSIS
ELECTRICAL DIAGNOSIS 8A-1-8
8A-1-9 ELECTRICAL DIAGNOSIS
ELECTRICAL DIAGNOSIS 8A-1-10
8A-1-11 ELECTRICAL DIAGNOSIS
ELECTRICAL DIAGNOSIS 8A-1-12
RENDER: 1.0x
NO RELATED
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Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.