yes it does it has one on the top and one the bottom
the Blazer uses two pumps in the same engine compartment mounted bottle
No, just one.
where does the rear & front pumps goes on a 2005 Yukon washer resvior
The windshield washer pump is attached to the washer fluid reservoir. You will find 2 pumps attached to the reservoir. The other pump feeds the rear window. The reservoir can be unbolted and removed from the engine compartment.
Most of the later GM washer pumps are located at the botoom of the washer fluid container. You will need to remove the tank to get access to the pump.
There is none. The reservoir feeds both the windshield and rear window washer via separate pumps.
The second pump supplies the rear window. Do you hear a pump running when you turn the switch on for the windshield washer?
My manual shows 4 fuses across the bottom and the second one from the right controls the "windshield wiper/washer"
The 1999 Mercedes ML320 typically has one windshield washer pump. This pump is responsible for delivering washer fluid to the front windshield. Some models may also have a separate pump for the rear windshield, but generally, the front system uses a single pump. Always refer to the vehicle's service manual for specific details regarding your model.
Some knob probably had it apart at some point and clipped the connectors for both washer pumps onto the wrong pump. The pumps will be at the base of the washer fluid reservoir. Disconnect the connectors at the pumps and clip them onto the opposite pump. Should fix your problem.
I am 90% sure that you have two reservoirs for fluid and two different pumps.
There isn't one. Your Suburban only has one washer fluid bottle, but it has two pumps. One for the front windshield and one for the backglass, they are side by side in the reservoir on the driver side inner fender.