1994 Pontiac Trans Sport Owner's Manual - Page 129

Comfort Controls & Audio Systems Do not attach a temporary vehicle licenst icross the defogger grid on the rear window. NOTICE: Don't use a razor blade or something else sharp on the inside of the rear window. If you do, you could cut or damage the warming grid, and the repairs wouldn't be covered by your warranty. Rear Window Defogger (OPTION) Press "R. DEF" (Rear Defog) to warm the defogger grid on the rear window. The indicator light will glow while the rear window defogger is operating. The rear window defogger will turn off automatically after about 10 minutes of use. If you turn it on again, the defogger will operate for about five minutes only. You can also turn the defoggeroff by turning off the ignition or pressing the switch again. =/ow=Through Ventilation system lour vehicle's flow-through ventilation ystem supplies outside air into the rehicle when it is moving. Outside air vi11 also enter the vehiclewhen the heater )r the air conditioning fan is running. ...128