If your Chevy Trax isn’t keeping you cool, we’ve outlined some of the most common reasons why this might be happening. These resistors do go out, so if cleaning and testing the motor has been done and still not luck, then you will probably be ordering the resistor.One of the most inconvenient vehicular problems is when the A/C won’t blow cold air. Someone that just wanted to share the solution he found. Total time for me was about an 1 hour and 15 minutes, but that was with other fuse and relay checks, hopefully this will cut some time off your adventure. I don't own a TRAX but after reading all the issues in this area, I wanted to pass this experience on to someone that might just need it.Hopefully this will help someone else, I think if you could get some aluminum anti-oxidant grease and coat the lugs, this might eliminate this corrosion issue until the unit just goes out on its own one day and not because of corrosion issues.This in my opinion is a poor design/implementation from the factory and it is a not a question of "if" this blower fan issue will happen, only a question of "when".I am curious if someone has replace one of these with an aftermarket unit, did the aftermarket unit have "brass" connectors, which is what this should have been from the factory!.Started vehicle, turned on the fan, went through all settings, works flawlessly, advised not to run at full fan speed for now.With the unit mounted securely, plugged the wire harness back in.From what I can see, it appears 14-17 are the same, but don't quote me, as this is the only TRAX I have worked on. Put the resistor back up in place, on this vehicle, the tab for the wire harness lock faces towards the interior of the vehicle, so if you try this, it should help you save time.Connected one more time to make sure it was working, don't run it for long, it uses the air flow in the system to cool it, so this thing gets HOT fast.Took a very small screw driver and cleaned and scored the contact point that was discolored. Blew out the resistor connector to make sure no residue.Took out a common finger nail Emory board and went to work, both sides of each contact, then used a small brass brush on each side and along the tips.ALUMINUM! A metal that when it corrodes, it turns white, and unlike copper, aluminum corrosion does not conduct electricity at all and causes resistance issues and can cause overheating of a circuit.Well to make this shorter, I noticed the lugs in the connector for the resistor were "white" or covered in "white", where I had I seen this before?.Upon looking at the unit, I plugged it back into the harness and noticed the fan came on upon connection, strange.Took a jumper and with the car running and the fan selection to (1), I jumped the wire from the discolored socket to the end one, fan came on full blast, so fan motor good, has to be the resistor, but wait.Notice that the factory plug, which was gray, had discoloration on the power position, hum.Using a 7/32 socket I managed to get the two screws out and then dropped the resistor down and unplugged it.On the 2017, I located the blower resistor plugged into the duct on the passenger side, upper left area of the foot area, was surprised to find out that it could be accessed without even removing the cover for the blower area.Hit the A/C button, compressor is coming on, so not a low Freon issue.Fuse 12 and Blower Relay in the drivers side fuse panel checked out. Research off the net shows that the Blower Resistor on these vehicles and many other Chevrolet makes seem to have an issue.:| I told her to bring the vehicle over and drop it off at my home shop on Friday AM and I would see if I could help out. Her 2017 Trax about 44,000 miles is out of factory warranty. Situation, we have a friend that owns a 2017 Chevy Trax LT, she is a nurse who works with my wife, single mom and on a single mom budget. If your Blower Motor for the AC or Heater suddenly stopped blowing, look here first, it might save you several dollars.
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