Conagra Food has changed the status of Pam Butter Flavor No-Stick Cooking Spray from pareve to dairy due to the addition of a dairy butter flavor. All other Pam products continue to be pareve.
From The KIB: Pesach News – Avocado Oil and Spray
All Pure Virgin Avocado Oil & Spray (without additives), are fine for use on Pesach without a special Pesach designation on the label.