A clicking noise may be noted from the turn signal flasher after the turn signals are switched off. This is commonly cause by a faulty turn signal switch which will require replacement.
Sierra 1500 HD
Average mileage: 177,333 (114,000–235,000)
10 people reported this problem
Viewing 1 - 3 of 3 comments
Replaced switch, problem solved.
when i start the truck i hear click click click coming from under the dash this is intermittin could it be because i used the signal light when i pulled in and parked and the rely is sticking open the ticking goes on for about 20 or 30 seconds after i start the truck
replaced flasher relay. not fixed