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GMC GUPS120-4 gas furnace Parts
Here are the diagrams and repair parts for GMC GUPS120-4 gas furnace, as well as links to manuals and error code tables, if available.
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Browse Parts for GUPS120-4 Gas Furnace
Gas train diagram
Manifold, 4
Part #B18264-02
The manufacturer no longer makes this part, and there's no substitute part
Heat exchanger assembly diagram
Power Vent H
Part #18812-04
The manufacturer no longer makes this part, and there's no substitute part
Gas train diagram
Manifold, 6
Part #B18264-04
The manufacturer no longer makes this part, and there's no substitute part
Heat exchanger assembly diagram
Flue Restric
Part #18248-19
The manufacturer no longer makes this part, and there's no substitute part
Blower assembly diagram
Blower Wheel
Part #B13680-34
The manufacturer no longer makes this part, and there's no substitute part
Heat exchanger assembly diagram
Flue Restric
Part #18248-18
The manufacturer no longer makes this part, and there's no substitute part
Gas train diagram
Manifold, 2
Part #B18264-00
The manufacturer no longer makes this part, and there's no substitute part
Heat exchanger assembly diagram
Limit, 160f,
Part #B13700-08
The manufacturer no longer makes this part, and there's no substitute part
Gas train diagram
Gas Valve,st
Part #B12826-05
The manufacturer no longer makes this part, and there's no substitute part
Misc. electrical and hardware diagram
Air Pressure Switch (gups0502, Gups1003, Gups1004, Gupi10503, Gupi1004, Gupi1005)
Part #B13701-01
The manufacturer no longer makes this part, and there's no substitute part
Symptoms for gas ranges
Main causes: gas supply problem, faulty pressure regulator, clogs in burner or orifice, control system failure, faulty t…
Main causes: burner igniter switch failure, bad spark module, dirty or damaged spark electrode, wiring failure…
Repair guides for gas ranges
How to replace a gas range oven igniter
If your gas oven doesn't heat up, the problem could be a faulty oven igniter. These step-by-step instructions guide you …
Repair time and Difficulty
45 minutes or less
How to replace an oven temperature sensor on a gas range
See how to replace an oven temperature sensor on a gas range.…
Repair time and Difficulty
15 minutes or less
How to replace a gas range oven control board
These step-by-step instructions explain how to replace an oven control board on a gas range…
Repair time and Difficulty
15 minutes or less
Articles and videos for gas ranges
Beeping oven driving you nuts? Find out what your oven is trying to tell you.…
Learn about a new feature added to the Search Bar on Sears PartsDirect…
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