Join Date: Sep 2008
February 1st, 2011, 8:51 PM #1
'07 Avalanche turn signal problem
my 07 avalanche right turn signal has gone haywire. Blinks normal about 4 times then starts blinking very fast. Front, Mirror and Rear bulbs all blinking. HELP!!!! Can someone tell me where the signal flasher module is located?
Last edited by mudslide; February 2nd, 2011 at 7:14 PM.
Join Date: Mar 2011
October 24th, 2011, 7:23 PM #5
Welcome to the forum. The BCM handles the turn signals on yours. It will hyper-flash the side if there's something wrong with the circuit, like something limiting the current flow (bulb out, too light a load, etc.). Look for a bulb that doesn't light up or lights up dim. Also, if you have replaced a normal bulb with an LED bulb, that'd be the problem.
Join Date: Oct 2011
October 28th, 2011, 8:16 PM #6
I just had a similar problem with my 2003. R.R. turn signal would not work, checked the bulb all was fine. Fronts stayed working correctly. It ended up being a simple fix. On the 2003 there is a power module behind the r.r. tire, mounted underneath the bed, to the inner of the quarter panel. If your is similar, look up under your Av. You can't miss it, it will have 5 different plugs to it. They each control a different section of lighting and such to the rear of the Av.. I had just recently replaced this module due to the running lights stopped working on the r.r.. Turn signal, stop lights worked fine. It seems I did not push the bottom plug in all the way or something, as soon as I pushed it in, the turn signal woks fine. Hope this helps.