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.
Lift Glass Release Function
1998 GMC Envoy 2WD V6-4.3L VIN WSECTION Lift Glass Release Function
The lift glass release switch is an input to the BCM.
The BCM will command the lift glass to release if one of the following conditions exists:
^ The vehicle is in PARK/NEUTRAL.
^ The park brake conditions are met.
^ The lift glass release switch is pressed.
When the BCM receives a message to activate the lift glass release solenoid from the RFA module, the BCM energizes the lift glass release relay if one of the following conditions exists:
^ The vehicle is in PARK/NEUTRAL.
^ The park brake conditions are met
The BCM will command the lift glass to release if one of the following conditions exists:
^ The vehicle is in PARK/NEUTRAL.
^ The park brake conditions are met.
^ The lift glass release switch is pressed.
When the BCM receives a message to activate the lift glass release solenoid from the RFA module, the BCM energizes the lift glass release relay if one of the following conditions exists:
^ The vehicle is in PARK/NEUTRAL.
^ The park brake conditions are met
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.