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GMC Sierra 2500 HD Problems

Clicking Noise From Flasher When Turn Signals are Off on GMC Sierra 2500 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.

(8 people reported this problem)

GMC Sierra 2500 HD Vehicles With This Problem

RepairPal Verified
Average mileage: 106,000 (106,000–106,000)
7 model years affected: 2001, 2002, 2003, 2004, more2005, 2006, 2007
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Brake problem? Or maybe a faulty head gasket cylinder?
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