is it because of a lack of vacuum pressure?
does fan door motorized or on a vaccuum line when you switch from AC to defrost?
On the dash below the headlight switch
The 2005 Chrysler 300 rear window defrost relay switch can be found beneath the drivers side dashboard. The rear window defrost relay switch will be near the center console.
If the blower works on the defrost mode only, you could have a disconnected vacuum supply line coming from the engine. If the blower motor doesn't work on any mode or speed you could have a blown fuse, burned out blower motor speed resistor, bad switch or a bad blower motor.
Gm vehicles do not have an inertia switch.
You could always take it to the shop You could always take it to the shop
Look under the dash on the 1996 suburban, and locate the brake light switch on the brake pedal arm. Remove the switch nut, and slide the switch out. Unplug the wires from the switch and install the new switch.
The relay switch for the locks on a 99 Chevy Suburban is located under the driver-side dashboard.
On dash Switch that says vent heat, a/c defrost etc.
We just bought one from Lowes. You do not have to manual defrost it. It does a automatic defrost every 24 hours, from the time you first powered it up.
IT does not have a reset switch.
Are you talking about two separate switches? The rear defrost switch might have corroded contacts or a bad spring mechanism. The factory manual recommends you pull off a few covers and drop the steering column to get to the defrost switch, but I found that some careful prying at the top and bottom of the defrost switch where it meets the dash with a knife point or thin flat screwdriver will get it to pop out. If you are adventuresome, pop the switch open and clean the contacts (look out for a flying spring!) , otherwise get one from the dealership or friendly local junk yard.