I have a flashing temperature light in the dash. but the temperature don't go up.....??????????

Obviously it's temperature gauge light. Check for coolant level first. Then check for coolant leak. If coolant is leaking out of your car, the lower coolant levels in your engine will cause it to overheat. If you have your heater on and it starts blowing hot air instead of cool, your engine is low on coolant. This will cause to flash a warning light on your car's dashboard.

sound like faulty DRL RELAY causing all your problem.

have your charging system checked. your alternator may be an issue.

I have a 2003 Buick lesabre limited my inside lights don't work

The flashing is the transmission computer's blinking an error code in attempt to tell you what's wrong with it. This is very unlikely to resolve itself, Don't take it to the dealer! Big repairs like this will get your wallet ***** big time. Take it to a transmission specialist.( D-for drive is flashing ). first check the sensor on top of transmission, the wires may be loose or broken. you may also want to change fluid and filter, if it is over due. good-day !

transmission temp is what it sounds like

Replace the turn signal switch. They can be fixed if your up to it, but you have to disassemble the switch. there are parts that have to go back in the right order. Let me know. The longer you let this go , you will start to lose the headlights. All the outside lights run threw the turn switch.

Window fuse's and relay's may be up under driver or passenger side dash or behind glove box, under the hood and even under the seats, and finally on the ends of the dash. All passenger power windows and locks are controlled thru and get power from the master control switch on the drivers door. Could be a broken wire in the rubber boot going from the door to the body. You will have to eliminate each till you find the culprit. Check that all switches return to neutral when released. It could also be the body control module.

Your vehicle has 2 flasher relays. One for the turn signals and one for the hazard lights. The turn signal flasher relay is located on the drivers side, under the dash, mounted on the drivers (Left) side of the steering column. The hazard flasher is mounted on top of the steering column. Do not get them mixed up.

1998 Plymouth Grand Voyager-similar happen to me when my battery was very low. I replaced the battery, then rear wiper control lights flashed, a/c control lights flashed.
HVAC controls need to be recalibrated, this is a factory test that involves pressing these control buttons in a certain sequence, which may take a couple minutes to complete. I'm sorry I don't have the written steps to share, but I hope this leads you to a solution.