The sunroof in my girlfriends 2001 Saturn SC2 broke back in Aug and I
was the unlucky recipient of receiving the task of fixing it. I did a
little research and discovered that thousands of people have had the
same problem. I purchased the replacement guides from sunroof doctor,
installed them this weekend and have the module installed back in the
car.

My question is this:

Before connecting the motor back up to the unit, the thought occurred
to me that there is no evident limit switches on the sun roof
assembly. My first instinct was that there must be limit switches in
the motor that determine the start and stopping points. To test this,
I connected all the wiring back the way it was and tested the motor
(still not installed). To my surprise the motor spins endlessly when
"open" and "close" are depressed. When "vent" is depressed, the motor
will sometimes spin 2 revolutions and stop while other times it will
spin about 5 revs then stop. I find it hard to believe that this is
this complicated seeing as how many people have claimed to have
installed the replacement guides and their sunroof is working
flawlessly. I am weary of installing the motor back in the sunroof
for fear of breaking something from the motor continuing to rotate.
Any advice you can give me would be most appreciated. Thanks

-Jesse