Blower fan only works for a few seconds before shutting off

2014 CHEVROLET SILVERADO
105,000 MILES • 5.3L • V8 • 4WD • AUTOMATIC
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EVANBARR
  • MEMBER
  • 1 POST
Automatic climate control, fan will turn on for 3-4 seconds before shutting off. It does this anytime I turn the system off and back on. I’ve read that this body style is famous for melting a connected plug but the only information they give is that it’s behind the glove box. I don’t know which plug it is or where exactly it’s at. Can someone please help me? I don’t want this repair to be more expensive than it has to be. Thanks in advance!
Feb 2, 2022 at 9:22 PM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,246 POSTS
Hi,

I'm not familiar with any connector issues. I checked for technical service bulletins, but none were listed.

Here is what I want you to do: First, on the passenger side, remove the insulator pad under the dash. See pic 1

Next, locate the blower motor under the dash and the connector to it. See pic 2 for blower motor location.

Disconnect the connector and check for any evidence of overheating.

If that isn't the cause, see pic 3 for the HVAC module location. Check the connectors at that point as well. However, I suspect if there is an issue, it will be at the blower motor.

Let me know what you find or if you have other questions.

Take care,

Joe

See pics below.
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Feb 3, 2022 at 11:42 AM
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