Question about GMC Sierra
When the flasher blinks quickly, that usually indicates that one of the flashing bulbs has burnt out. You will have to do a visual check of all the bulbs to see if one has failed and if it has, replace it.
Posted on Mar 19, 2014
Check the individual indicater bulbs are all working ,actually look at each one not just the dash indicater light ,if all ok try the hazard switch if same happens the indicator relay needs changing if not the light/indicator switch will need replacing i would think good luck
Posted on Mar 19, 2014
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Posted on Jan 02, 2017
SOURCE: gmc sierra turn flasher location
The flasher on this vehicle looks nothing like the flasher's of yesteryear. It will be located behind the drivers side knee bolster(under the steering wheel). It will be a small black box that is about 3 inches wide, 2 inches deep, and 1 inch thick. It may be somewhat difficult to locate because on some of the GM trucks they actually hide it behind the guage cluster bezel but to the left of the guages. Let me know if I can help you any further.
Posted on Aug 21, 2008
the flasher is behind the dash where the steering column goes. It's hard to get at and harder to remove. They just can't make these things easy, can they?
Posted on Dec 02, 2008
take off the cover on the top and bottom of the steering column just behind the wheel. pop the tilt lever out simply just by grabbing it and give it a good tug. then once you have the new switch and you get in there your going to need an inverted torx socket to remove the small bolts that hold the switch to the column. do not move the gear on the new switch make sure it lines up exactly as the old one did!!!!!!!!!!!!
Posted on Mar 15, 2009
if it happens on both side you need to change out your flasher relay, normally located in the fues box or on the underside of the dash, just listen for the tick tick noise and you will find it
Posted on Jan 30, 2010
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