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 MANUALSGMC1998ENVOY 2WD V6-4.3L VIN WREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSRELAYS AND MODULES - COMPUTERS AND CONTROL SYSTEMSBODY CONTROL MODULETESTING AND INSPECTIONSCAN TOOL TESTING AND PROCEDURESSCAN TOOL DATA DEFINITIONSGENERAL INFORMATION
1998 GMC Envoy 2WD V6-4.3L VIN W
General Information
1998 GMC Envoy 2WD V6-4.3L VIN WSECTION General Information
The typical scan tool readings of Body Control Module (BCM) data will assist in diagnosing a problem. The scan tool data displays can be viewed while the vehicle is being driven.
The typical scan tool data definitions represent general information displayed on the scan tool regarding the following items:
^ BCM functions
^ Ignition inputs
^ Basic operating conditions
The data messages and menu headings displayed on the scan tool are defined below.
The typical scan tool data definitions represent general information displayed on the scan tool regarding the following items:
^ BCM functions
^ Ignition inputs
^ Basic operating conditions
The data messages and menu headings displayed on the scan tool are defined below.
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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.