Having problems with your 1999 GMC Envoy ?
Where do I find the rear washer motor? to be able to replace a new washer motor
Remove the cover for the air filter. The washer reservoir is under the filter. There will be two washer pumps. The one that doesn't work is the one that you need to replace.
Repair Help & Product Troubleshooting for 1999 GMC Envoy
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