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 MANAGEMENTRELAYS AND MODULES - POWERTRAIN MANAGEMENTRELAYS AND MODULES - COMPUTERS AND CONTROL SYSTEMSBODY CONTROL MODULEDESCRIPTION AND OPERATIONBODY CONTROL SYSTEM CIRCUIT DESCRIPTIONWAKE-UP STATE
1998 GMC Envoy 2WD V6-4.3L VIN W
Wake-Up State
1998 GMC Envoy 2WD V6-4.3L VIN WSECTION Wake-Up State
The following wake-up signals will turn ON the BCM. The BCM can then begin active control and/or monitoring of certain devices:
^ The door ajar switches
^ The door handle switches (utility only)
^ The dome lamp
^ The park lamps
^ The power door lock switches
^ The gate ajar switch
^ The interior lamp request active
^ The ignition key put into the ignition switch
^ The ignition key removed from the ignition switch
^ The ignition in the RUN position
^ The key in the door lock switch (Envoy only)
^ The lift glass release switch
^ The lift glass jamb switch
^ The RFA request to the BCM
^ Any Class 2 communication that requires BCM interaction
^ The door ajar switches
^ The door handle switches (utility only)
^ The dome lamp
^ The park lamps
^ The power door lock switches
^ The gate ajar switch
^ The interior lamp request active
^ The ignition key put into the ignition switch
^ The ignition key removed from the ignition switch
^ The ignition in the RUN position
^ The key in the door lock switch (Envoy only)
^ The lift glass release switch
^ The lift glass jamb switch
^ The RFA request to the BCM
^ Any Class 2 communication that requires BCM interaction
RENDER: 1.0x
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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.