Thread: Turn signal/idle

Hello I am new grand prix owner so I am not too familiar with these engines...but I have a 1995 grand prix gtp with the 3.4. Everything seems fine other than when I turn my turn signal on the lights will dim and also the engine idle will drop and go back up everytime the signal blinks. I got the battery and alternator tested everything came back good. I also replaced the battery for good measure. Please help. Thanks in advance

check all your grounds