Where is the flasher located on a 1999 gmc Denali?

On a 1999 GMC Denali, the flasher relay is typically located under the dashboard, near the steering column. It can often be found in the fuse box or relay panel, which is usually situated on the driver's side. To access it, you may need to remove a cover or panel. Always refer to the owner's manual for specific details and diagrams.