I'm caught between a rock and a hard spot. I'm looking for the control
module that is in behind the heat/AC control on the dashboard (I think),
that provides the diagnostic read-out on the face of the heater/AC panel.
To put some history to my dilemna, I purchased this Baby in the summer of
'02. The only problem at that time was that the speed control wouldn't
maintain speed when cruising down the highway, so I deferred to my 'working
car', and left the Cad sit idle. In fact, it sat idle all winter. I'm
talking Saskatchewan, where the temperature bottoms out at minus 20-30 and
sometimes colder, and hold for weeks on end. Unfortunately, I didn't pull
the battery, and it froze, perhaps affecting the ECM - and downline from
The ECM has since been replaced. Since then, I've had it in a mechanics shop
(CAA-Saskatchewan) in Saskatoon, and they are advising that they need this
control module behind the heat/AC control before they can do their trace.
This is further complicated that for this particular year, it may be a
'design 1' or 'design 2' module that we're looking for.