How do you replace the windshield washer reservoir on a 1999 Yukon?
Replace Windshield Washer Reservoir on 1999 GMC Yukon
You may need to remove the battery, battery tray and inner fender to replace the washer bottle. It is not uncommon for the washer pumps to leak so make sure you find your leak before replacing the washer bottle on your Yukon.
Does the pump leak only when in operation or any time there is fluid in the reservoir?
The washer pump may leak all the time or when first starting to leak it may only leak when it is in operation.