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Old Sep 22, 2007 | 12:56 PM
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Default top won't go up

my 02 ss vert top cycles down perfectly; but when i press the button to raise it i hear nothing. i checked the fluid it seems normal so what else could it be.
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Old Sep 25, 2007 | 07:51 AM
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Probably the top switch is bad, happens alot (knock on wood).
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Old Sep 25, 2007 | 09:21 PM
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so does it just pop off or what
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Old Sep 25, 2007 | 10:40 PM
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Yup, pops right out.

You can reverse the polarity on the pump then try the switch, it should go up but not down... then you know its the switch. I had to do this in a pinch to get the top up after leaving a shop that was 100+ miles from my house, and yes, a bad switch was the culprit.
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Old Sep 26, 2007 | 11:22 AM
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what do you mean reverse polarity on the pump
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Old Sep 26, 2007 | 06:37 PM
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You flip the positive and negative conections on the pump, it will run the opposite of what it supposed to.

All I could find with a quick search was this schematic of the pump assembly, but I does not show the wiring with any great detail.

http://shbox.com/1/conv_top_pump.jpg

I'm currently at work, and will be untill 6:00am tomorrow. When I get home I'll try to take some pics of the wires on my car.
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Old Sep 26, 2007 | 06:38 PM
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Originally Posted by Houdini
You flip the positive and negative conections on the pump, it will run the opposite of what it supposed to.

All I could find with a quick search was this schematic of the pump assembly, but I does not show the wiring with any great detail.

http://shbox.com/1/conv_top_pump.jpg

I'm currently at work, and will be untill 6:00am tomorrow. When I get home I'll try to take some pics of the wires on my car.
sounds good thanks..
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Old Sep 26, 2007 | 06:42 PM
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"Reverse the polarity"... I hope that is the right terminology, cause it make me feel like I belong at a Star Trek convention when I say it out loud!
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Old Sep 29, 2007 | 08:07 PM
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long shot, otherwise i am baffled - just looking at it from another angle... I had air in mine causing the same issue...

Make sure the top pump is full of fluid, these pump systems are notorious for leaking. Last I heard, GM recommends "mineral oil" for fill. Once you top off fluid, you may need to cycle the top once or twice to purge the air, then top-off fluid again (the pump has LOW and FULL marks).

good luck!
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