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GMC GUN125-4B gas furnace Parts
Here are the diagrams and repair parts for GMC GUN125-4B gas furnace, as well as links to manuals and error code tables, if available.
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Browse Parts for GUN125-4B Gas Furnace
Blower assembly diagram
Capacitor 12
Part #B9456-72
The manufacturer no longer makes this part, and there's no substitute part
Heat exchanger assembly diagram
Burner Box T
Part #18823-02
The manufacturer no longer makes this part, and there's no substitute part
Heat exchanger assembly diagram
Transfer Tub
Part #B18102-02
The manufacturer no longer makes this part, and there's no substitute part
Blower assembly diagram
Blower Shell
Part #18393-01
The manufacturer no longer makes this part, and there's no substitute part
Heat exchanger assembly diagram
Secondary Ai
Part #18224-11
The manufacturer no longer makes this part, and there's no substitute part
Misc. electrical/hardware diagram
Air Pressure
Part #B13701-07
The manufacturer no longer makes this part, and there's no substitute part
Misc. electrical/hardware diagram
Air Pressure
Part #B13701-32
The manufacturer no longer makes this part, and there's no substitute part
Misc. electrical/hardware diagram
Rubber Coupl
Part #B18104-00
The manufacturer no longer makes this part, and there's no substitute part
Misc. electrical/hardware diagram
Rubber Sleev
Part #B18104-01
The manufacturer no longer makes this part, and there's no substitute part
Heat exchanger assembly diagram
Flue Restrictor (gun050-2b, Gus050-2)
Part #18248-00S
The manufacturer no longer makes this part, and there's no substitute part
Symptoms for electric ranges
Main causes: faulty surface element, burner control switch failure, temperature limiter not working properly, loose wiri…
Main causes: impact from dropping an item on the glass surface, ceramic glass surface flaw, surface element temperature …
Repair guides for electric ranges
How to replace an oven temperature sensor on an electric range
These step-by-step instructions guide you through replacing an oven temperature sensing probe.…
Repair time and Difficulty
15 minutes or less
How to replace an electric range oven control board
If the electronic oven control board isn't powering the bake and broil functions, you can replace it in less than half a…
Repair time and Difficulty
15 minutes or less
How to replace a range surface element control switch
The surface element control switch lets you turn the stovetop elements on and off, and to set the heat level. These step…
Repair time and Difficulty
15 minutes or less
Effective articles & videos to help repair your furnaces
Get expert tips for preparing your furnace for winter. Follow maintenance tips to keep your furnace in top shape.…
Find out how new DOE standards going into effect in 2023 can affect you and what you need to do.…
Get answers to frequently asked questions about Sears and Sears PartsDirect.…
Parts & More
Parts
Blower Wheel 134-2513-01Handle 749-04693A-0637Home Electronics Coil 146005311Air Grid 00604148Home Electronics Flywheel YASFX013005Camshaft 209-32201-11Cabinet X25141021Label (trade 224-91635-03Lead Connector BN39-00441BC-film,mpp 2301-001251Link-mechan 797233Shrtblk St UP00739Home Electronics Knob 23874870Bkt,backing, 191337Home Electronics Shield 126-02715-01Home Electronics Holder YEFK04129Home Electronics Capacitor 022-07433HANDLE LATC 73-837Passive Woof TCG35228607PANEL- W/CON 52420100