Hi I am having the same problem my 2014 Buick Encore cooling fan will not shut off after the engine is turned off. I see that Blazer 406 member said
" The big relay on the drivers side fender.... inside the engine compartment...... unplug the harness out of the bottom. This is a "fan delay" relay I think. Usually it eventually fails.... making your fans run a lot more than you are supposed to when the car is off and it runs your battery down. I don't think there is any downsides to just running this relay unplugged all the time. Mine has been that way for 6 years + ",
i am not sure what you mean by unplug the harness out of the bottom. When you say the big relay which one are you talking about. I looked up the engine compartment for my buick but I found so many. I don't know what the difference between them are and which one I should pull out. Can you help. I have include a picture of the engine compartment
Mini Fuses
21 – Fan Relay (Auxiliary Fuse Block)
J-Case Fuses
8 - Cooling Fan Low/Mid
9 - Cooling Fan High
Mini Relays
3 – Cooling fan – mid
8 - Cooling fan – low
HC-Mini Relays
6 - Cooling fan – high
Relays ( I think these are Auxiliary fuse block)
RLY02 - Cooling fan control 1
RLY03 - Cooling fan control 2