Turn sinal flasher

[CRP757]

Can anybody tell me where the heck the turn signal flasher is located on my 2008 sierra???

It's not in the fuse box.

[davester]

don't know where it is in your truck, but in mine it's inside the cab near the driver's feet.  You might consider turning the key on, everything else off, then turn the blinker on and follow the clicking sound.  It's location may also be described in the owner's manual.

[MaverickZ71]

On the 2007-2013s, there is no clicker relay.  The sound comes from the driver's door radio speaker.  Probably controlled by the BCM or something like that.  If your flasher or turn signals are out, there's probably a bad bulb or ground someplace.  

[CRP757]

I replaced my turn/brake and DRL lights with leds that supposedly are can bus complaint, still getting hyper flash. Told to change turn signal relay for led type. But since with model doesn't have a relay what to do??

Anybody been through this?

[MaverickZ71]

On 6/9/2020 at 6:54 PM, CRP757 said:

I replaced my turn/brake and DRL lights with leds that supposedly are can bus complaint, still getting hyper flash. Told to change turn signal relay for led type. But since with model doesn't have a relay what to do??

Anybody been through this?

NOW you tell us about the LEDs.  Common complaint on here.  One dude incurred a cost of $1-2K while his GM service dept chased electrical gremlins for days because he didn't tell them he'd put in LEDs.  When they found out, they handed him the bill and said it wasn't covered under warranty, and he'd have to pay to get his truck back.  There's a lot of supposedly compliant LED stuff available on Ebay and the interwebs.  A lot of GM vehicles don't like it.  Hell, the computers are so damned picky they don't even always recognize the OEM trailering equipment anymore.  Even changing spark plugs to a brand other than AC Delco or NGK doesn't seem to work out very well for some folks.  You'll either have to source a brand of LEDs that works on GMs (use the search function on here) and/or pay your dealer $$$ to make it work, or just bite the bullet and go back to the OEM type or good ol incandescent light bulbs that work every time, but are just not so bright.  Most of the OEM incandescent bulbs last 10+ years, with the exception of the models where the low-beam headlamps are also the DRLs.  

Edited June 15, 2020 by MaverickZ71

[CRP757]

Yeah I am learning the hard way...nothing new for me!

So I figure I'll try the load resistors. Do I need one of each bulb, front and back or just one for each side?

[Shootinsquid]

I was always told one on each side should suffice. I have a 2002 Sierra Denali and changing everything out this week. We'll see what happens!!