1997 GMC SIERRA Owners Manual

Page 153 of 436

GMC SIERRA 1997  Owners Manual Section 3 Comfort  Controls and Audio  Systems 
In this section,  you’ll  find out how to operate  the  comfort  control and audio systems  offered  with  your  vehicle. Be 
sure  to  read about the

Page 154 of 436

GMC SIERRA 1997  Owners Manual Comfort Controls 
Heater  Control  System 
the  relative air temperature  independently of the  function 
knob  setting.  Move  the  knob  clockwise  toward  the  red 
area  for warmer 
air. Move  the

Page 155 of 436

GMC SIERRA 1997  Owners Manual Heater  and  Air  Conditioning  Control 
System 
(If Equipped) 
Fan Knob 
The knob  on  the  le.ft  side of the  heating  system  control 
panel  controls  the  fan speed.  The knob  has four  speed

Page 156 of 436

GMC SIERRA 1997  Owners Manual Air  Conditioning 
On hot days,  open  the  windows  long  enough  to  let  hot 
air  inside  escape.  This reduces the  time  it  takes  for your 
vehicle  to cool  down.  Then  keep  your  windows

Page 157 of 436

GMC SIERRA 1997  Owners Manual Ventilation  System 
For mild  outside temperatures  when little heating or 
cooling is needed, use 
VENT to direct outside  air 
through  your  vehicle. 
Air will flow through the 
instrument panel o

Page 158 of 436

GMC SIERRA 1997  Owners Manual Ventilation Tips 
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Keep the hood  and  front air  inlet  free of ice, snow or 
any  other  obstruction 
(such as leaves). The heater 
and  defroster  will  work  far better,  reducing  the

Page 159 of 436

GMC SIERRA 1997  Owners Manual Do  not attach a  temporary  vehicle  license, tape or decals 
across  the defogger  grid  on the rear  window. 
I ~~ 
~~ 
Don’t  use  a  razor  blade  or  something  else  sharp 
on  the  inside 
o

Page 160 of 436

GMC SIERRA 1997  Owners Manual AM-FM Stereo 
Playing the Radio 
VOLUME: 
This  knob  turns  the  system on and  off  and 
controls  the  volume. 
To increase  volume  and turn the 
radio  on,  turn  the  knob  clockwise.  Turn 
it