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If your Blower Motor for the AC or Heater suddenly stopped blowing, look here first, it might save you several dollars.


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. Her 2017 Trax about 44,000 miles is out of factory warranty. Dealership wanted $160.00 diagnosis fee.


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.


Research off the net shows that the Blower Resistor on these vehicles and many other Chevrolet makes seem to have an issue.:|
Ok Troubleshooting 101

  1. Fuses and Relays checked, all good. Fuse 12 and Blower Relay in the drivers side fuse panel checked out.
  2. Hit the A/C button, compressor is coming on, so not a low Freon issue.
  3. 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.
  4. Using a 7/32 socket I managed to get the two screws out and then dropped the resistor down and unplugged it.
  5. Notice that the factory plug, which was gray, had discoloration on the power position, hum.
  6. 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.
  7. Upon looking at the unit, I plugged it back into the harness and noticed the fan came on upon connection, strange.
  8. 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?
  9. 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.
  10. 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.
  11. Blew out the resistor connector to make sure no residue. Took a very small screw driver and cleaned and scored the contact point that was discolored.
  12. 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.
  13. 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. 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.
  14. With the unit mounted securely, plugged the wire harness back in.
  15. Started vehicle, turned on the fan, went through all settings, works flawlessly, advised not to run at full fan speed for now.
  16. 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!
  17. 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".
  18. 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.
  19. 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. 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. 0:)
Cordially,
Steve
Someone that just wanted to share the solution he found.
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.
 

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Dielectric grease would have been a good idea from the factory.
 

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Dielectric grease for the win! Blower motor resistors are flaky on pretty much every brand of car. In my experience even Toyota’s are afflicted. As an electrical engineer, it surprises me that such an antiquated, inefficient design is still used after all these years.
 

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Dielectric grease for the win! Blower motor resistors are flaky on pretty much every brand of car. In my experience even Toyota’s are afflicted. As an electrical engineer, it surprises me that such an antiquated, inefficient design is still used after all these years.
I'm sure some car maker already has PWM controlled blower motors. No resistor, more efficient.
 

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My Encore has pulse width modulation but not the Trax, it still has the resistor network that gets cooled down by the airflow in the box. In the winter it get's cooled down by the hot air from the heater.


317
 

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Where is the AC clutch relay located? Its not engaging and i also have the same issue as yours when blower is not working. I only disconnect then connect the blower module and it starts running again.
 

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T
If your Blower Motor for the AC or Heater suddenly stopped blowing, look here first, it might save you several dollars.


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. Her 2017 Trax about 44,000 miles is out of factory warranty. Dealership wanted $160.00 diagnosis fee.


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.


Research off the net shows that the Blower Resistor on these vehicles and many other Chevrolet makes seem to have an issue.:|
Ok Troubleshooting 101

  1. Fuses and Relays checked, all good. Fuse 12 and Blower Relay in the drivers side fuse panel checked out.
  2. Hit the A/C button, compressor is coming on, so not a low Freon issue.
  3. 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.
  4. Using a 7/32 socket I managed to get the two screws out and then dropped the resistor down and unplugged it.
  5. Notice that the factory plug, which was gray, had discoloration on the power position, hum.
  6. 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.
  7. Upon looking at the unit, I plugged it back into the harness and noticed the fan came on upon connection, strange.
  8. 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?
  9. 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.
  10. 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.
  11. Blew out the resistor connector to make sure no residue. Took a very small screw driver and cleaned and scored the contact point that was discolored.
  12. 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.
  13. 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. 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.
  14. With the unit mounted securely, plugged the wire harness back in.
  15. Started vehicle, turned on the fan, went through all settings, works flawlessly, advised not to run at full fan speed for now.
  16. 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!
  17. 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".
  18. 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.
  19. 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. 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. 0:)
Cordially,
Steve
Someone that just wanted to share the solution he found.
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.
[/QUOTE
If your Blower Motor for the AC or Heater suddenly stopped blowing, look here first, it might save you several dollars.


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. Her 2017 Trax about 44,000 miles is out of factory warranty. Dealership wanted $160.00 diagnosis fee.


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.


Research off the net shows that the Blower Resistor on these vehicles and many other Chevrolet makes seem to have an issue.:|
Ok Troubleshooting 101

  1. Fuses and Relays checked, all good. Fuse 12 and Blower Relay in the drivers side fuse panel checked out.
  2. Hit the A/C button, compressor is coming on, so not a low Freon issue.
  3. 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.
  4. Using a 7/32 socket I managed to get the two screws out and then dropped the resistor down and unplugged it.
  5. Notice that the factory plug, which was gray, had discoloration on the power position, hum.
  6. 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.
  7. Upon looking at the unit, I plugged it back into the harness and noticed the fan came on upon connection, strange.
  8. 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?
  9. 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.
  10. 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.
  11. Blew out the resistor connector to make sure no residue. Took a very small screw driver and cleaned and scored the contact point that was discolored.
  12. 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.
  13. 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. 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.
  14. With the unit mounted securely, plugged the wire harness back in.
  15. Started vehicle, turned on the fan, went through all settings, works flawlessly, advised not to run at full fan speed for now.
  16. 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!
  17. 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".
  18. 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.
  19. 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. 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. 0:)
Cordially,
Steve
Someone that just wanted to share the solution he found.
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.
Thanks for the tip. My wife has a 2014 TJ Trax and the blower fan resistor was showing the same discolouration on the pins and plug as you had explained, cleaned it up and :)it is now fully operational. Cheers.
If your Blower Motor for the AC or Heater suddenly stopped blowing, look here first, it might save you several dollars.


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. Her 2017 Trax about 44,000 miles is out of factory warranty. Dealership wanted $160.00 diagnosis fee.


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.


Research off the net shows that the Blower Resistor on these vehicles and many other Chevrolet makes seem to have an issue.:|
Ok Troubleshooting 101

  1. Fuses and Relays checked, all good. Fuse 12 and Blower Relay in the drivers side fuse panel checked out.
  2. Hit the A/C button, compressor is coming on, so not a low Freon issue.
  3. 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.
  4. Using a 7/32 socket I managed to get the two screws out and then dropped the resistor down and unplugged it.
  5. Notice that the factory plug, which was gray, had discoloration on the power position, hum.
  6. 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.
  7. Upon looking at the unit, I plugged it back into the harness and noticed the fan came on upon connection, strange.
  8. 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?
  9. 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.
  10. 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.
  11. Blew out the resistor connector to make sure no residue. Took a very small screw driver and cleaned and scored the contact point that was discolored.
  12. 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.
  13. 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. 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.
  14. With the unit mounted securely, plugged the wire harness back in.
  15. Started vehicle, turned on the fan, went through all settings, works flawlessly, advised not to run at full fan speed for now.
  16. 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!
  17. 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".
  18. 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.
  19. 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. 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. 0:)
Cordially,
Steve
Someone that just wanted to share the solution he found.
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.
Thanks for the tip. My wife has a 2014 TJ Trax and the blower fan resistor was showing the same discolouration on the pins and plug that you had described, so I cleaned it all up and it is fully operational, cheers.
 

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So I have a 2015 chevy trax and my ac went out turn the knob to different speeds and was not workin. I took my resistor out and my plug was burned up. I bought a new resistor and pig tail started the car back up and my connector was burnt out again. Was told maybe the blower motor needed to be changed out so i bought all my parts from a GM dealership blower motor 120.$ Pig tail 40$ and new resistor 18$ i switched it all out and my ac works fine now. Here is a video for it. The blower motor is not as easy as most blower motors to pull out.
 
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