Clearing codes without disconnecting battery? (92 3.1L)

Last time I worked on my car I disconnected the MAT/IAT or whatever it is called - the sensor on the backside of the air filter box. Well on the way back I forgot to reconnect it. It gave me a CODE 23 ... After I got home I plugged it back in but later it still gave me the CODE 23 error.. Is there a way to clear the codes without disconnecting the battery? Or did I just screw up that sensor?

You can pull the ECM fuse, but essentially your erasing all the codes when you do just like disconnecting the battery. The only advantage to doing it this way is, it doesn't screw up your clock and radio pre-set stations.

I disconnected my battery,now my radio don't work.
Is there a way to clear the code so my radio works again,without taking it to the dealership?

Does the radio display show LOC? If so, and you don't have the un-lock code, you'll have to contact a dealer to unlock it to make it work again.

Does the radio display show LOC? If so, and you don't have the un-lock code, you'll have to contact a dealer to unlock it to make it work again.Will they tell me that code or will they keep it to themselves?
Can this be disabled or do I need to install a new radio to disable it?

If it's a Delco-locII radio, they will change it to a generic code. They will charge you for it, and they will give you the instructions to change it to something you know or turn the function off. IF you decide to leave the function enabled, make sure you WRITE IT DOWN. It's an anti-theft feature that is really outdated, as GM radios aren't in as high demand anymore.

i didnt know a 1992 lumina came with theftlock, and there are ways to unlock with out going to a dealer. email me for more info.

i didnt know a 1992 lumina came with theftlock, and there are ways to unlock with out going to a dealer. email me for more info.I have a 98 Lumina.The radio says LOC.

where would the ecm fuse be located on a 1994 lumi euro? and would doing this reset all vehicle warning lights on the console? i have a low coolant and service engine soon coming on at operating temp. the low coolant came on first and i fixed the problem(busted radiator tank) but now the service engine soon light comes on and the low coolant. i checked the coolant level and its filled to the top. im stumped. need help.

Check the low coolant sensor, it's probably mucked up with sludge. It's in the radiator, passenger side tank, about a 1/3 of the way down. It's a little box about an inch or so square. GM/Delco part number is 10096163, just for reference. Have the car scanned before you erase the codes, as you may have a sensor out of range or other issue that needs to be addressed. There are two fuse/relay centers in your car. One is in the glove box area, the other is under the hood. Look for a fuse marked ECM or Computer.

would that account for the (service engine soon) warning light or just the low coolant light?