Lou,
Welcome to the forum.
Since you have an 01 you probably have the older Dewald slide system like mine. Check in your battery compartment to make sure the pump motor is Dewald. If so do the following:
Go to
http://powergearus.com/
In the upper right click on "Manuals"
On the next search screen type Dewald in the search Box
You will see 5 different manuals associated with the Dewald system so go ahead and download the pdf files. The manuals might be able to help you.
Sounds like a switch or relay problem. You should be able to get them from Power Gear.
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If your slide system is a Lippert system then your best bet is to contact MIMF or MIMF2 who can help you with these systems.
Good Luck