95 Chev sub 2500 4x4 a/c control module

My ac quite working. but i can jump out relay and coos just fine. also mode switch/knob wont move damper from floor to panel or to defrost. no blown fuses, Haynes manual diagram doesn't match colors or # of wires in harness are there any good diagrams of this component available or any trouble shooting tips.

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jdewitt457
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