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2002 chevy trailblazer_ls
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21 Posts
Discussion Starter #1
I know there are a couple of threads on here about the rear washer not working but most turn out to be a hose issue which is not my case.

I push the button and the rear wiper will sweep but no spray. Pump does not run. Checked the fuse and swapped the relay and same thing. I manually jumpered the pump to the battery and ground and that way it will pump and it sprays out the back.

Any suggestions? I am not sure how to jump the relay and see if it is getting power from the relay to the pump.
 

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2008 chevy trailblazer_lt
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5 Posts
Had same issue....
Mine was a bad rear wiper switch.
Check to make sure you getting a signal from the switch when it is pressed for washer fluid.
Mine I just replaced the switch and all was good
 

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2002 chevy trailblazer_ls
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21 Posts
Discussion Starter #3
I am thinking it is the switch as well. Yesterday I thought the wiper was working when I pushed the button, today it did not. I think yesterday I must have had the wiper on already.
 

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17 Posts
what was your solution? When I push the button on the dash I hear a click as if a relay is engaging, the wipers sweep but I don't hear a motor pumping and no fluid coming out.
 

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2008 gmc envoy_sle
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619 Posts
check for power at the rear wiper pump motor. might be as simple as a new pump motor, nice and cheap.
 
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