JGBS23DEA1WH General Electric Range - Instructions

This gas range had an oven that would heat, but it wouldn't hold it at a stable temperature. Say you set it at 300 degrees. Well, it'd head up to broiling temperatures, then drop down to like 200 degrees, then 400 degrees (You get the picture).

My guess was that the thermostat, given that this oven was ~20+ years old, was no longer able to detect correctly the temperature inside the oven.

The thermostat sensor is made up of the housing (The part that sits behind the oven temperature control knob), a long wire (so you can route it to the inside of the oven), and the probe itself (Which I boldly assume is the thing that measures the temperature inside the oven)

TL;DR:

-Pull oven from wall.
-Turn off electric and gas.
-Remove the grates and drip pans off the top.
-Pry the range's cooktop up (It's on like a hinge and is designed to lift up. You have to play with it a bit with like a screwdriver on the sides (One on each side). If you pry just a tad, you'll notice these prongs that act like detents. (LIFT CAREFULLY, the heating elements are still connected via their gas lines! They're flexible, but don't man handle the thing!
-Once that's up, it's time to finally start removing the thermostat which is the knob that controls the oven temperature. Pull the plastic knob off which will expose the two screws you need to detach it from the oven (Phillips head). Be super careful. You don't want to drop these screws. You'll be struggling to fish them out of the empty space that sits between the thermostat and plastic knob.
-Once that's loose, open the oven door and detach the thermostat from the back of the oven. Recycle the prongs holding the old thermostat sensor for the new one.
-Go to the back of the range. Like the actual back part of it.
-Frustrate yourself with pulling out the thermostat through the route it's been put in. It's difficult to route it through the tight spaces, but not complicated. Keep a mental note of this route and copy it with the new thermostat that you have to install.
-Don't fret, when it comes time to wire the new thermostat sensor, it's actually a lot easier than you would think to find that little hole in the back of the range that you have to slot it through. It's just slightly covered by insulation. Pulling it slightly aside, you'll see it very easily.
-Screw in the thermostat housing at the front of the oven.
-Frustrate yourself again by routing the wire while taking care not to bend the probe (This is my assumption not to bend it and I think it's a safe assumption to make)
-Find that tiny little hold in the back of the range again, insert the probe through it, then use those recycled prongs to hook that probe into place.
-Yay, you're almost done.
-Reinsert knob on thermostat.
-Turn gas and electricity back on.
-Give it a test run to see if you did it right.
-if it still doesn't work, then it might not have been the thermostat giving you problems.
-If it does work, put everything back the way it was.
-You're done.

Followed you tube instructions I found on line via parts select recommendations.

I put it in the same way tuck it out

the electrodes on this model have to be removed before you can raise cooktop, once cooktop is raised remove wire from burner bracket, use needle nose pliers to squeeze bottom of clip,remove &replace with new parts.

Removal old fashioned oven door handle took time after removing the oven door. New replacement handle was easy to install! Try to reinstall was long and finally got installed after 5 attempts due hinge on right side issue

Easy

My son lifted up cooktop, unscrewed the front plate to gain access to old tube burners, removed and replaced with new parts.

Remove the old tubes. Lift the lid NO MORE THAN FOUR INCHES. !!!!! Feel for the connections on the switch ends and attach losely. Carefully ( with some slight bending ) attach tubes to the burners. Tighten all connections. Do not over tighten.
The tubes broke originaly because , attempting to clean the area I lifted the lid too high.

Removed the old caps and replaced with new burner caps. The stove top looks brand new. Thank you.

Ther part arrived within a few days of me ordering it. It was exactly the right one, thanks to the detailed pictures on the website!

Remove the front panel, at which time the spring loaded door slammed closed while the paned and handle were in my hand. Fortunately I had a star bit to fit the screw holding the door and panel together.The parts should come with 2 screws since the part has holes for 2. note: the factory installed handle only had 1 screw in each side.

Cut off the power. unscrewed the cover. fed the new thermostat inside the over and rescrewed. Feeding the line was the most time consuming finding the hole to insert it in the back of the oven.

The repair was easy except what caused it to break .Their was a missing screw on the door itself that was never put on or came off could not find old screw,once it was replaced new part was stronger than before.

Unplugged the range. Took out all the necessary screws and lifted up the cooktop cover. Unscrewed each gas tubes connecting to each gas burner's dial to allow more working space. Pulled out the old thermostat, installed the new one. Put back the gas tubes and all other necessary screws. Plugged the range and tested out the new thermostat.

took off the old one; put on the new one! easy-peasy.