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Model # GUPX120-5B Official GMC gas furnace
Here are the diagrams and repair parts for Official GMC GUPX120-5B gas furnace, as well as links to manuals and error code tables, if available.
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GUPX120-5B Gas Furnace
#1
Misc. electrical and hardware diagram
Transformer
Part #B11416-00
The manufacturer no longer makes this part, and there's no substitute part
#1A
Blower assembly diagram
Capacitor 10
Part #B9456-52
Replaced by #12908
?
Manufacturer substitution
This part replaces B9456-52. Substitute parts can look different from the original.
$107.77 |
10% OFF Phone Price : $119.77
In Stock
#1
Gas train diagram
Gas valve
Part #12826-06S
The manufacturer no longer makes this part, and there's no substitute part
#3
Blower assembly diagram
Blower wheel
Part #B13680-16
Replaced by #B1368016S
?
Manufacturer substitution
This part replaces B13680-16. Substitute parts can look different from the original.
$234.06
In Stock
#4
Gas train diagram
Gas orifice
Part #B17893-42
Replaced by #B1789342
?
Manufacturer substitution
This part replaces B17893-42. Substitute parts can look different from the original.
$8.29
In Stock
#7B
Blower assembly diagram
Blower shell
Part #18393-00
Replaced by #0271A00016S
?
Manufacturer substitution
This part replaces 18393-00. Substitute parts can look different from the original.
$120.53 |
9% OFF Phone Price : $132.53
In Stock
#2
Heat exchanger assembly diagram
Limit, 150f,
Part #B13700-06
Replaced by #1370906S
?
Manufacturer substitution
This part replaces B13700-06. Substitute parts can look different from the original.
$48.84
In Stock
#3B
Blower assembly diagram
Blower wheel
Part #B13680-00
Replaced by #D6723311S
?
Manufacturer substitution
This part replaces B13680-00. Substitute parts can look different from the original.
$391.06
In Stock
#2A
Heat exchanger assembly diagram
Limit, 220f,
Part #B13700-11
Replaced by #1370911S
?
Manufacturer substitution
This part replaces B13700-11. Substitute parts can look different from the original.
$48.84
In Stock
#3
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 oven door hinges on a gas range
See how to replace the oven door hinges on a gas range yourself, in just 30 minutes.…
Repair difficulty
Time required
15 minutes or less

How to replace a range spark igniter switch
Follow these steps to replace the spark igniter switch—sometimes called a burner switch or spark switch—on a gas or dual…
Repair difficulty
Time required
60 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 difficulty
Time required
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.…

Learn about Sears Technical Institute and the advanced technical content being developed for aspiring appliance techs.…

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