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Clicking Noise From Flasher When Turn Signals are Off on GMC Sierra 1500 HD

Problem Description and Possible Solution

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.

Problem Data
RepairPal Verified
Average mileage: 177,333 (114,000–235,000)
7 model years affected: 2001, 2002, 2003, 2004, more2005, 2006, 2007
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