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Blower Motor Issues

Devin Goodman

By Devin Goodman
in Troubleshooting & Recalls

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Devin Goodman Enthusiast

Devin Goodman

Posted
Posted

Hey Everyone- Having some issues with my Heat on my 2016 Silverado 1500 High Country. When turning the hear (or AC) on, the blower motor will blow for 3-4secs (revving up to whatever speed I have it set on) and then will completely stop. I've checked all fuses and nothing is fried. Thinking it may be the resistor but wanted to see if anyone else was smarter than me before I tried replacing it.

 

Thanks

JimCost2014 Senior Enthusiast

JimCost2014

Posted
Posted
7 hours ago, Devin Goodman said:

Hey Everyone- Having some issues with my Heat on my 2016 Silverado 1500 High Country. When turning the hear (or AC) on, the blower motor will blow for 3-4secs (revving up to whatever speed I have it set on) and then will completely stop. I've checked all fuses and nothing is fried. Thinking it may be the resistor but wanted to see if anyone else was smarter than me before I tried replacing it.

 

Thanks

Welcome to the site.

 

Does it do the same thing when you have the system set to Auto mode?

JimCost2014 Senior Enthusiast

JimCost2014

Posted
Posted
27 minutes ago, Devin Goodman said:

It does. I’ve tried auto, defrost, you name it. Nothing makes it pick up like it should. 

Next questions, how old is your battery, how long has it been doing this, and lastly, have you tried to disconnect your battery, 30 minutes or so, and hooked it back up?

 

Electrical problems usually lead to not enough clean power, whether it is a ground, battery, or component problem with the new trucks.

Devin Goodman Enthusiast

Devin Goodman

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Posted

Great suggestion. I just bought the truck in June so honestly unsure of the age of the battery. I did get an automated email from the mylink alerting me that the battery had a low state of charge about 2 weeks ago after it was parked for 3 days while I was out of town. So you may be on to something there. 

 

I’ll definitely try disconnecting the battery and see if that helps before I go trying to work under the dash. 

JimCost2014 Senior Enthusiast

JimCost2014

Posted
Posted
3 minutes ago, Devin Goodman said:

Great suggestion. I just bought the truck in June so honestly unsure of the age of the battery. I did get an automated email from the mylink alerting me that the battery had a low state of charge about 2 weeks ago after it was parked for 3 days while I was out of town. So you may be on to something there. 

 

I’ll definitely try disconnecting the battery and see if that helps before I go trying to work under the dash. 

If it is the original, would suggest replacing it, when they start to fail, you will get all kinds of weird things happening, then it just won't start without warning.  

Devin Goodman Enthusiast

Devin Goodman

Posted
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Wanted to close this up for anyone reading in the future. Before this truck, I had a 2004 2500HD with over 400,000 on it and I was constantly working on something somewhere. It was always nice to be able to browse the internet and find an answer somewhere. 
 

I tried replacing the blower motor with a new one and the issue persisted. Returned that blower motor and was perplexed by the issue so I decided to run the truck into the dealer today. Dealer diagnosed it as the HVAC Controller (the knobs and buttons for the A/C). Dealer advised that the part was on back order and couldn’t tell me how long it would take to get one but that it would be around $500 with parts and labor whenever they did. 
 

Fast forward to tonight, ordered one while eating dinner and it should be in in a few days, for less that $130. Seems very easy to replace. Just have to pull a trim piece off, remove a few 7mm bolts and pop the old one out and pop the new one in. 

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  • 2 months later...
Ddj New Member

Ddj

Posted
Posted

I was also having the same issue with my 2016 Sierra. I took it to the Stealership and spent money on a diagnostic check. They told me it was the blower motor and replaced it. It all seems to work fine now. I wish that I bought a blower motor first and tried that, but i thought it might have had something to do with reprogramming the heater control module.

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