1992 Grand AM Right side directional light

Me again, another problem I have is with my right side directional light, It won't blink, it always stay on. This started about a week ago. I've been havin' all sorts of problems with indicators, all of witch seem to have started when I had my engine washed and cleaned. First The Parking and reverse lights on the side of the handel woud not turn on or the neutral light would light up, that problem fixed it self, but then the BREAK indicator on the front panel would always stay on or it would not turn on at all, also that problem fixed it self. And now I have the right side Directional indicator not blinking.
Where these problems caused by cleaning the motor or is it some faulty wiring on the front panel, or something else?

PLEASE HELP!!!!

It just sounds like a burnt out bulb, check the rear tail and make sure two lights are lit on the side not flashing and check the light in the front bumper, The front side marker (triangle Shaped light) does not have an effect on the flashing even when burnt out. So i think you are safe for the moment... if all bulbs are working, then you may want to check your flasher, I don't think this has something to do with you washing out your engine compartment..... but you never know

I checked the bulbs and there working fine. Gonna check my flasher, thanks for the info. I'll let you know if that was the problem.