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 MANUALSCHEVROLET2000S10/T10 BLAZER 4WD V6-4.3L VIN WREPAIR AND DIAGNOSISACCESSORIES AND OPTIONAL EQUIPMENTANTITHEFT AND ALARM SYSTEMSKEYLESS ENTRYTESTING AND INSPECTIONSYMPTOM RELATED DIAGNOSTIC PROCEDURESA PRELIMINARY INFORMATION
2000 Chevrolet S10/T10 Blazer 4WD V6-4.3L VIN W
A Preliminary Information
2000 Chevrolet S10/T10 Blazer 4WD V6-4.3L VIN WSECTION A Preliminary Information
IMPORTANT: The following steps must be completed before using the symptom tables.
1. Perform A Diagnostic System Check - Remote Keyless Entry before using the Symptom Tables in order to verify that all of the following conditions are true:
^ There are no DTCs set.
^ The control module(s) can communicate via the serial data link.
2. Review the system operation in order to familiarize yourself with the system functions. Refer to Keyless Entry System Operation.
VISUAL/PHYSICAL INSPECTION
^ Inspect for aftermarket devices which could affect the operation of the Keyless Entry System. Refer to Checking Aftermarket Accessories in Diagrams.
^ Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.
INTERMITTENT
Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to Testing for Intermittent and Poor Connections in Diagrams.
SYMPTOM LIST
Refer to Keyless Entry System Inoperative in order to diagnose the symptom.
1. Perform A Diagnostic System Check - Remote Keyless Entry before using the Symptom Tables in order to verify that all of the following conditions are true:
^ There are no DTCs set.
^ The control module(s) can communicate via the serial data link.
2. Review the system operation in order to familiarize yourself with the system functions. Refer to Keyless Entry System Operation.
VISUAL/PHYSICAL INSPECTION
^ Inspect for aftermarket devices which could affect the operation of the Keyless Entry System. Refer to Checking Aftermarket Accessories in Diagrams.
^ Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.
INTERMITTENT
Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to Testing for Intermittent and Poor Connections in Diagrams.
SYMPTOM LIST
Refer to Keyless Entry System Inoperative in order to diagnose the symptom.
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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.