The GE Monogram oven is stuck in the self clean mode. Please assist on resetting so that I can get back to the general control settings

SOURCE: GE P7 Oven

I, too, have lost my manual and none of the timers work. I can never remember how long to run the clean cycle for, but will turn it off as it has been a little over 2hours and your post mentions 1.5hours.
I initiate the cleaning cycle by completing steps mentioned above and then turning the top dial (which has a clean range on it) clockwise until the clean light comes on. I then just time it by my watch to turn it all off. Then I wait a couple of hours before attempting to open the door. Don't forget to take the racks out, they are not suppose to go through the Clean cycle.
Good Luck,
Linda

SOURCE: 1988 General Electric Oven

Sounds like the the thermostat. This is the dial item which controls the temperature. Removal and replacement is usually straightforward. Turn off the power before starting work.

SOURCE: Self-cleaning feature of GE Built-In Oven does not work

Simply set the Clock and Delay Start to the current time, then set the Stop Time ahead 3 hours. For example, if it is currently 8:00 then set the Stop Time to 11:00. The lights on the console will come on and the cleaning cycle will begin. At some point during the cycle when the oven gets hot enough, the lock mechanism is "fixed" and will not release until the cycle is complete.

SOURCE: Frigidare double convection self-cleaning oven

try here kim if you dont find what you need contact me back http://www.frigidaire.com/support/manuals.asp

SOURCE: oven will not get out of the self-cleaning mode

Ok, unplug the unit for 5 minutes to reset the main circuit board. if the error continues to plague the unit, replace the control board.