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Discussion Starter #1
I finally got annoyed enough with the flaky MFS operation to disassemble and clean it. What a crappy, flimsy switch design. Anyway it now works great, but I still have no washer pump (it's been intermittent for years). The washer function of the switch works (wipers go through the 3-sweep routine), but no pump noise.

So I now need to know 1.Is the pump buried in the reservoir beneath the coolant bottle? 2. Where does the pump motor ground terminate, at the BCM or on a fender somewhere?

Damn, just read the title, meant "washer motor".
 

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The MFS triggers the GEM to ground the wiper relay to make it work. The relay sends 12V+ to the pump motor.

It is on the bottom of the tank in the passenger side fenderwell. You can take the plastic panel off under the radiator and get to the pump.
 
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