Question about 1997 Geo Metro

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How to disconect the control cables on 1997 geo metro heater control?

I need to replace the heater controls. the fan speed switch does not work. I cannot figure out how to disconect the cable from the switch.

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  • Geo Master
  • 20,706 Answers

Does the fan work on high.
yes, then the heater resistor block is burned up. replace that
or look at it to see if the coil there are burned up and gone.
please post systems first, then your guess.
the FSM covers all this, step by step, take apart dash. under
HVAC chapter,.
alldata.com log in and its there.
factory service manual.
removing the control is tricky on all cable cars.
you must get the cables loose before the panel can move out.
the cables all clamped down or they will be dead. (all cars with cables drive)
please post of HIGH speed blower works on high first.
why do this the hard way, at the worst we can use a voltmeter
and prove what is dead, first.

see those rules on cables in the FSM below?
ill not post the panel Remove

  1. Disconnect the negative battery cable.
  2. Remove the heater control unit from the instrument panel.
  3. Remove the mode and temperature control cables at the heater case. Remove the cables from the vehicle.
  4. Remove the fresh/recirculate control cable at blower case and remove from vehicle.
  5. Installation is the reverse of removal.
  6. Adjust the cables prior to attaching at heater control unit.

now lets look at the blower, dead, on all speeds but HIGH , i bet.
?????????????????
this is your cave man simple blower
so if FUSE marked HTR is good, and 12vdc is on both sides of
fuse keyon, then it is good,. and 12vdc lands on motor top
where below on HIGH the blower and switch works on high.
if say the right side resistor blows up, (as all do)
then all lower speed fail. and DC power fails to reach the fan motor.
how is that? clear>?

how to disconect the control cables on 1997 geo me - 25490481-331th0o4ygoodik5f23zyrbq-3-0.jpg

Posted on Feb 28, 2015

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