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Heat and AC blowing at the same time and won't cut off

Tiny
DOWENS
  • MEMBER
  • 2006 CHEVROLET SILVERADO
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 153,000 MILES
When I crank up my truck up the air conditioning automatically blows out of my passenger side vent and the heater blows out the driver side vent. It will not cut off.
Sunday, September 27th, 2015 AT 2:14 PM

1 Reply

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
There is a tsb out on this check for a burnt up harness leading from control to resistor. It mostly effects blower not shutting down, then pull hvac fuse inside truck for 60 seconds with key on and see if actuators will reset to stop your problem. If not have a local pro scan hvac for codes.
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Monday, September 28th, 2015 AT 9:28 AM

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