1997 Buick Regal Owner's Manual - Page 168
1997 Buick Regal Manual
Page 168 highlights
Do not attach anything like a temporary vehicle license or decal across the defogger grid. ~ Audio Systems ~ [NOTICE: Don't use a razor blade or anything else sharp on the insideof the rear window.If you do, you could cut or damage the warming grid, and the repairs wouldn't be covered your warranty. by Your Delco@audio system has been designed to operate easily and give years of listening pleasure. You will get the most enjoyment out of it if you acquaint yourself with it first. Find out what your Delco system can do and how to operate all its controls, to be sure you're getting the most out of the advanced engineering that went into it. Setting the Clock Press and hold HRS until the correct hour appears. Press and hold MIN until the correct minute appears. You may set the clock with the ignition off if you press RECALL first and follow the same procedure described above. 3-12