Question about 1998 Oldsmobile Silhouette
Hello you have a bad blower resister.which is located under the passenger side of the dash behind the glove box.The part is not the expensive .:)
Posted on Jun 29, 2009
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Posted on Jan 02, 2017
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Fig. Typical HVAC operation schematic
An inoperative blower motor could be caused by the following:
* Blown fuse(s). The fuse should be replaced. There may be both a LOW BLOWER and HIGH BLOWER fuse. Some models may also call it the HVAC fuse. Even the RADIO fuse is used in some applications. Check them all. If a fuse is blown there may be a short to ground in one of the power supply circuits.
* Open Circuit. Check the circuit between the ignition switch and the blower motor, and the blower motor ground circuit. Repair as necessary. * Faulty blower switch. A faulty blower switch should be replaced. * Most heater blower circuits also include a blower motor relay (look in the underdash convenience center), as well as a blow motor resistor. These items should be checked especially if the blower runs in one or two speeds, but not all speeds selected.
REMOVAL & INSTALLATION
Fig. Blower motor and fan assembly removal
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Fig. View of the resistor block screws (1), blower motor resistor (2), resistor block wire connector (3), blower motor screw (4), blower motor (5), blower motor wire connector (6), blower motor screw (7), HVAC housing (8), wire harness retainer (9), blower motor screw (10)
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