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.
Flash to Pass
1998 GMC Envoy 2WD V6-4.3L VIN WSECTION Flash to Pass
Input 2:
Range: ON/ OFF
The BCM monitors the state of the flash to pass input on CKT 1356 in order to determine if the high beams are requested ON.
The scan tool displays ON when the BCM or the flash to pass switch commands the high beams ON.
OFF is displayed when the flash to pass switch or the BCM is not commanding the high beams ON.
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.