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What if the blower on your 1995 2500 GMC blows air only on floor it will not switch to any other settings like defrost Any ideas?
Baroemer
Fixed one of these this morning in front of my shop while carrying on a conversation with a friend who had stopped by. You will need approximately 2.5 feet of 1/8 inch rubber vacuum hose to effect this simple repair. After the engine has cooled completely, open the hood. After opening the hood, find the A/C accumulator (a large, silver cylinder just below the passenger side of the windshield). Looking around in that area and to the right and center of that area, you will find a small, black, plastic vacuum hose. This hose will have become brittle and cracked due to underhood heat. DO NOT PULL ON THE HOSE. Just to the right of the center top of the engine on the intake manifold, there is a black plastic vacuum distributor. Take your new rubber vacuum hose and, after removing the old hose, plug your new section onto the nipple. Route the new hose over to the small black plastic vacuum check valve that the old, broken hose originally went to near the accumulator. Voila! Air from the dash vents (or wherever you command). Good luck. SDI
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∙ 17y ago
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