GM Service Manual Online
For 1990-2009 cars only

Interior Lights Dimming Circuit Description for Chevrolet Blazer - 2WD 1998

Voltage is supplied to the IP dimmer control when the headlamp switch is in the PARK or HEAD position. The voltage goes through the ILLUM fuse to the following components:

    • The IP lamps
    • The AM/FM stereo radio
    • The HVAC controller
    • Various switch lamps

Voltage is supplied to the IP dimmer control when the headlamp switch is in the OFF/AUTO position. The voltage is supplied from the park lamps circuit.