Having problems with your Chevrolet Lumina ?
Heater fan does work on 96chevy lumina - Lumina Chevrolet Cars & Trucks
I'm guessing you meant "doesn't work". There is a blower motor fuse in the fuse block you should check first. If that is ok then I'd check the wiring to the blower motor and use a volt-ohm-meter to check the blower motor itself.
Repair Help & Product Troubleshooting for Chevrolet Lumina
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