Whirlpool
Wall Oven/Microwave Combo

Model # GSC278PJQ3 Official Whirlpool electric wall oven

Here are the diagrams and repair parts for Official Whirlpool GSC278PJQ3 electric wall oven, as well as links to manuals and error code tables, if available.

There are a couple of ways to find the part or diagram you need:

  • Click a diagram to see the parts shown on that diagram.
  • In the search box below, enter all or part of the part number or the part’s name.

Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.

We encourage you to save the model to your profile, so it’s easy to access parts and manuals for your appliance whenever you log in.

For DIY troubleshooting advice and repair guides, visit our repair help section.

Model diagram and schematic

SEARCH WITHIN THIS MODEL

?

This is the number corresponding to the part on the diagram / schematic

Search
ALL PARTS
Showing 10 of 237 parts  |

Microwave Door Interlock Switch 4375346
#51

Cabinet and stirrer diagram

Microwave door interlock switch

Part #4375346

Replaced by #W10211972

?
Manufacturer substitution
This part replaces 4375346. Substitute parts can look different from the original.
BEST SELLER
$30.85
16% OFF Phone Price : $36.85
In Stock
Bake Element 4452153
#7

Internal oven diagram

Bake element

Part #4452153

Replaced by #WPW10207397

?
Manufacturer substitution
This part replaces 4452153. Substitute parts can look different from the original.
BEST SELLER
$49.26
11% OFF Phone Price : $55.26
In Stock
Magnetron 4375072
#26

Cabinet and stirrer diagram

Magnetron

Part #4375072

The manufacturer no longer makes this part, and there's no substitute part

Oven Baseless Lamp 4375348
#53

Cabinet and stirrer diagram

Oven baseless lamp

Part #4375348

Replaced by #WPW10440740

?
Manufacturer substitution
This part replaces 4375348. Substitute parts can look different from the original.
BEST SELLER
$22.69
21% OFF Phone Price : $28.69
In Stock
Diode 4375349
#54

Cabinet and stirrer diagram

Diode

Part #4375349

Replaced by #WPW10687786

?
Manufacturer substitution
This part replaces 4375349. Substitute parts can look different from the original.
BEST SELLER
$20.49
23% OFF Phone Price : $26.49
In Stock
Microwave High-voltage Capacitor 4375020
#25

Cabinet and stirrer diagram

Microwave high-voltage capacitor

Part #4375020

Replaced by #WP4375020

?
Manufacturer substitution
This part replaces 4375020. Substitute parts can look different from the original.
BEST SELLER
$108.39
10% OFF Phone Price : $120.39
In Stock
Range High-limit Thermostat 4451442
#37

Oven/literature diagram

Range high-limit thermostat

Part #4451442

Replaced by #WP9759243

?
Manufacturer substitution
This part replaces 4451442. Substitute parts can look different from the original.
BEST SELLER
$45.89
12% OFF Phone Price : $51.89
In Stock
Blower 6610168
#16

Latch diagram

Blower

Part #6610168

Replaced by #WPW10016550

?
Manufacturer substitution
This part replaces 6610168. Substitute parts can look different from the original.
BEST SELLER
$146.16
8% OFF Phone Price : $158.16
In Stock
Touch-up Paint (black) 72032
#NI

Top venting/optional diagram

Touch-up paint (black)

Part #72032

Replaced by #72032

?
Manufacturer substitution
This part replaces 72032. Substitute parts can look different from the original.
BEST SELLER
This item is not returnable
$9.02
10% OFF Phone Price : $10.02
In Stock
Microwave Turntable Motor 4375347
#52

Cabinet and stirrer diagram

Microwave turntable motor

Part #4375347

Replaced by #W10642989

?
Manufacturer substitution
This part replaces 4375347. Substitute parts can look different from the original.
$69.48
8% OFF Phone Price : $75.48
In Stock

Repair guides for front-engine lawn tractors

How to replace a ground drive belt on a riding lawn mower

How to replace a ground drive belt on a riding lawn mower

Replace the ground drive belt if it's broken or too worn to spin the transaxle pulley.…

Repair difficulty
Time required
 45 minutes or less
How to replace a blade clutch cable on a riding lawn mower

How to replace a blade clutch cable on a riding lawn mower

If the blades don't spin on your riding mower when you shift the lever, the blade clutch cable could be broken. Here’s h…

Repair difficulty
Time required
 30 minutes or less
How to replace a riding lawn mower blade drive belt

How to replace a riding lawn mower blade drive belt

Replace the blade drive belt if it's broken or won't spin the cutting blades because of wear.…

Repair difficulty
Time required
 45 minutes or less

Articles and videos for front-engine lawn tractors

Should I get an electric riding mower?

Should I get an electric riding mower?

Get help deciding whether to make the switch to a battery-powered riding mower…

How to enjoy all the online benefits we offer on our Sears PartsDirect website

How to enjoy all the online benefits we offer on our Sears PartsDirect website

Learn about all the convenient features on our Sears PartsDirect website that make your parts purchases easier.…

Top questions about Sears and Sears PartsDirect

Top questions about Sears and Sears PartsDirect

Get answers to frequently asked questions about Sears and Sears PartsDirect.…