Anyone have any problems with heated seats? on 2005 GMC Sierra 3500

Lights flash, but don't stay on and the seats don't heat up.

Asked by for the 2005 GMC Sierra 3500
Very easy to check. There are 2 black wires that run into the seat base and 2 that run into seat back. Unplug each 2 wire connector and check for resistance on side going to seat. If either circuit is open then that seat heating element needs to be replaced. If 1 element is bad neither heater will operate.
Thank you!...drivers element was bad