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1990 GMC Suburban Support Question

1990 GMC Suburban Support Question

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Question posted by Anonymous-118294 on August 14th, 2013

A/c Max / Normal Switch

I just changed my plug wires. When I did I hit sum thing and I heard air release. Since then when I switch from the max to normal there is no change in air pressure coming from vents like befor. Any ideas.

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