Stuck in defrost

Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's, Olds 98 91-96, Buick Lesabres and Park Avenue 91-96. Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.
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opie521
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Joined: Sat Nov 21, 2009 1:26 pm
Year and Trim: 1997 Pontiac Bonneville SE
Location: Gardner, KS

Stuck in defrost

Post by opie521 »

I had my air set to defrost this morning, and now it is stuck. When I turn the control knob to any different setting it stays in defrost mode. I'm also still working on that problem with the fan speed controls. I haven't figured out why I only have the two middle fan speeds. Anyone have any ideas?
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Archon
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Re: Stuck in defrost

Post by Archon »

I'm not real up on your year, but check for a broken or disconnected vacuum hose that I believe is near (or along side) the passenger fender under the hood for the defrost only problem.
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