1990 Chevrolet Blazer Q&A

1990 Chevrolet Blazer Question: my 1986 monte carlo heat & air only blows on drivers side on floor.

how many air lines should be going to the controll panel from the engine compartment. right now there is 2 1 from vacume on carb. 1 from inline heater hose. do u have a web site that i can get answers on problems on older cars ? thanks for ur time -
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