I recently purchased a 2017 GMC Terrian and we are really happy with it. I replaced the tail lights with LED bulbs but as you are aware, caused hyper flashing. So I did a search of both fuse panels (under hood and passengers side) and no luck. I am thinking the Flash Relay might be under the dash near the steering column. Any one know where it may be located?
Thanks for your help.
Lon
Thanks for your help.
Lon