u need to replace flasher unit under dash.... this is not to be mistaken for fuse! guy at parts counter will know what it is... it is what makes the blinker noise...
Check the bulbs they are double filamented with samller filament for turn signals Could be a problem in steering column
Check the 2005 GMC Envoys turn signal flasher. The flasher could have an intermittent issue causing the signals to not work.
possible bad turn signal switch in the steering column or a bad ground on your turn signals.
souns like a misfiring.
you spelled mack wrong...its mac
Check your fuse!
Most vehicles have two flasher units. One for the turn signals and one for the hazards. If you have already replaced one try looking for the other one. Or check for a bad trunsignal switch
Most likely bad turn signal flasher or could be a problem in steering column
It could be the turn signal bulbs, some vehicles use separate bulbs for the hazard and turn signals. It could also be a bad switch or wires for the turn signals.
Bad wiring i am guessing that something is wrong with your turn signal switch. Actually, The turn signals and hazard lights are controlled by 2 different relays. Try changing the Turn-signal relay.
It could be as simple as a fuse. Or as hard as a multi-funtion switch. Which means the switch for your turn signals.
If the lights come on but do not flash then the turn signal flasher relay is defective.