HVAC, heater and AC control for chevy silverado. I believe it fits 01-06 but there are 4 or 5 different heater control modules for those years. This one has manual driver and passenger auxiliary control wo rear defrost. It should work fine, I bought it for a work truck but never installed it. It may also fit gm sierras, blazer, tahoe, yukon, and any 1500, 2500, and 3500 gmchevy truck.