How do you replace a 4-way flasher on a 1995 GMC sierra truck?

To replace the 4-way flasher on a 1995 GMC Sierra truck, first locate the flasher unit, which is typically found under the dashboard near the steering column or in the fuse box. Disconnect the electrical connector from the old flasher and remove it from its mounting position. Install the new flasher by securing it in place and reconnecting the electrical connector. Finally, test the 4-way flashers to ensure they are working properly.