Stuck in defrost
- opie521
- SE Member

- Posts: 11
- Joined: Sat Nov 21, 2009 1:26 pm
- Year and Trim: 1997 Pontiac Bonneville SE
- Location: Gardner, KS
Stuck in defrost
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?
- Archon
- Resident Gearhead

- Posts: 8781
- Joined: Mon May 19, 2008 10:30 pm
- Year and Trim: 2014 Cadillac XTS Vsport.
- Location: Grand Rapids, Michigan
Re: Stuck in defrost
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.
*Gone, but not forgotten* - Black 2000 SSEi, HIR Headlights, Angel Eyes fogs, 3rd brake light overlay, hi-flo cat, 180 degree thermostat, HS 1.9 rockers, LSx yellow springs, Intense FWI, PCM, shift kit, push rods, and 3.4 Pulley. ZZP Power Log.

