Yes it is in the same housing the blower motor is in ....And I know the
screws are a pain....We usually us a 5.5mm swivle head socket all you
need to put back is the two in front we never put the on in the back
in....You should be able to see the module as you look into the fan
hole...Eventually the screws come out my take longer than you think it
should but we all who have replaced them have been there....There is a
plug to te module and from the module is a plug for your fan
motor....That is what controls your speed....
Re: Truck heater problem-HELP please
Group: alt.autos.4x4.chevy-trucks Date: Sat, Jan 3, 2004, 10:22pm
(CST+6) From: firstname.lastname@example.org (Ian)
Thanks for the feedback.
I pulled the controller from the dash and took it apart; there was no
sign of burning anywhere.
I checked the "resistor block" the dealer sold me. It looked OK (a
little discolored) so I didn't replace it, but I'll do that now. It is
two wires: is a straight wire with a widened part in the top; the other
is a coil like a heater element. Both are bare. But it wasn't next to
the blower motor as my Haynes book (and the dealer's schematic) shows.
Another dealer's schematic showed it on top of the main heater housing
about 8" to the toward the driver's side.
However, there is some kind of module that looks like the description
you gave; as far as I can see it. It is attached to the side of the
housing that the blower motor sits in and I can feel a wire going over
the back and down to it. Trouble is, I can get one screw out and can
feel at least one other. If I can get to the others, I don't see how
I'll ever get it back in. So I'm trying to remove the housing for the
blower motor so I can get to it. Otherwise, it looks like I'll have to
remove the whole heater assembly. But it sounds to me like you didn't
have to do anything like this. So I was wondering if I'm missing
something (probably obvious) that will make this a lot easier to do. Any
info on this would sure be appreciated.
I'm also checking the wiring back from the controller looking for power
loss, or any evidence of burning.
We just got a bunch of snow and my van sure isn't like my truck.
Another thing You said you smelled burt wire in the can then it stopped
working....Said gm sold you the resistor...ok did you put it in? Also
after you put it in did you test your lead from the control head for
power?And might sound funny but did you check the fuse?