1994 GMC Jimmy Owner's Manual - Page 140

To turn on the rear window defogger, find the switch marked REAR DEFOG on your instrument panel. Press "ON' until the light in the switch comes on, then release it. The rear window defogger will only work if the ignition switch is turned to RUN. You can turn the defogger off at any time by pressing "OFF."The defogger so will shut itself off after several minutes that the glass does not get too hot. If the window still isn't clear, the defogger on again. turn NOTICE: Scraping the insideof your rear window could cut and damage the defogger. Your warranty would not cover this damage. Don't put decals there, either. might have to scrape them off. You Audio Systems Your Delco@audio system has been designed to operate easily and give years of listening pleasure. But you will get the most enjoyment out it, if of you acquaint yourself with it first. Find out what your Delco@system can do and how to operate all its controls, to sure you're getting the most be out of the advanced engineering that went into it. Be aware that hearing damage from loud noise is almost undetectable until it is too late. Your hearing can adapt to higher volumes sound. Sound that of seems normal can be loud and harmful to your hearing. Take precautions by adjusting the volume control on your radioato sound level before your safe hearing adapts to it. To help avoid hearing loss or damage: Adjust the volume control to the lowest setting. Increase volume slowly untilyou hear comfortably and clearly. 3-6