I need to know the location of my blower relay. Already changed out the blower resistor, that did not remedy the problem (fan will not come on). Yes, I installed it correctly.

It would help to know the make and model. Different manufacturers put them in different places and mount them different.

if fuse/power to fan/resistor all check out, drop the motor and look for
a mess of leaves inside...in my case, there were so many they kept
the motor from operating/OR taking it all apart/testing and finding nothing
wrong but leaves and removing them somehow corrected a bad ground...who knows or cares?...it's now working

Yes, generally the blower motor relay is located in backside of this devices, located under globe box (passenger side).

Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

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More than likely it's the blower motor resistor. Gm's wonderful electrical engineers decided it was a good idea to run constant power to the high speed fan relay which is part of the resistor assembly. When the relay stick the fan stays on. The resistor is located under the dash on the passenger side ne'er the blower motor. There is a plastic trim pannel that will need to be removed from under the dash in order to see it. It is typically help in place with two screws that you will need a 5.5mm socket to remove (yes it's a 5.5mm socket). Lmk

I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa

Yes both relay and switch are possible.Needs to be inspected.
Blower motor replacing for all vehicles? http://repairhelpcenter.blogspot.in/2012/02/blower-motor-replacing-for-all-vehicles.html

Blower motor Resistor shorting problem?

http://schematicsdiagram.blogspot.com/2011/12/blower-motor-resistor-shorting-problem.html

How to remove Blower control switch? http://howtobyme.blogspot.in/2012/02/how-to-remove-blower-control-switch-on.html

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Where is blower motor relay located ? http://technoanswers.blogspot.in/2012/02/where-is-blower-motor-relay-located-on.html

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This will help.Thanks.

REPLACE BLOWER MOTOR RESISTOR. IF YOU GET ONLY ONE CONTROL SPEED.IF YOU HAVE ALREADY REPLACE BLOWER MOTOR RESISTOR.BLOWER MOTOR CONTROL SWITCH BAD. REASON BLOWER STAY ON ALL THE TIME.FAN BLOWER MOTOR RELAY BAD.
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Thanks for the opportunity to let me help. The blower control switch in your vehicle also uses a blower relay. This relay is generally located on the firewall on the passenger side near the heater fan. You can also look in you vehicle owners manual for the location of the blower relay, it may be also be located in the fuse and relay box under the hood. Generally speaking if the highest setting doesn't work on a GM vehicle it is a high blower Relay. This item is not expensive and can be purchased at most all you local Auto parts stores. If you have a Napa, Orielly's, or AutoZone these stores will also likely help you in the location if you are unable to locate this relay. Here is a general picture The installation of this relay is either to remove from the fuse box, or if located near the heater fan housing then you will need to remove the mounting screws, remove the wiring clip, then reverse to install. I hope that this has helped you. D.R. Wilkins

it is not the resistor that gives you problem, open your fan blower and change the carbon brush inside maybe it is too thin already....

This is probably not a relay problem.
Blower motor resistor usually the cause of this.Very common.
Depending on year and model of your car the location of resistor may vary.
And yes it's draining the battery.
Resistor has another name - Final Stage Controller.

There is a resistor attached to the blower box. Replace the blower resistor and this should solve your problem