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 DEFINITIONSDATAINADVERTENT POWER TIMER
1998 GMC Envoy 2WD V6-4.3L VIN W
Inadvertent Power Timer
1998 GMC Envoy 2WD V6-4.3L VIN WSECTION Inadvertent Power Timer
Data:
Range: 0-1216 seconds
The BCM uses this feature to protect the battery against inadvertent battery rundown caused by devices that attach to the courtesy lamp circuit. If the customer accidentally left the following components ON, the BCM will turn the lights OFF after 20 minutes:
^ The dome/courtesy lamp
^ The vanity lamp
^ The overhead reading lamp
^ The underhood or the glove box lamp
The lights are turned OFF by the inadvertent power relay. The inadvertent power relay supplies power to the courtesy lamp circuit when the ignition is in the OFF position. The number of seconds displayed refers to the amount of time left before the BCM will turn the relay OFF.
RENDER: 1.0x
NO RELATED
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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.