2006 GMC C2500 CONTROLS

2006 GMC C2500
780,000 MILES • V8 • 2WD • AUTOMATIC
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SCOTT WILLIAMS
  • MEMBER
  • 1 POST
my a/c runs for awhile than all of asudden the heater starts blowing on the driver side. why ?
Oct 14, 2010 at 6:15 AM
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HMAC300
  • ✓Experienced Mechanic
  • 48,601 POSTS
oneof your actuators on theheater box isn't working correctly or the control unit is making it do that. This picture is similarto what you have. they can be electric or vacuum


https://images.2carpros.com/forum/automotive_pictures/406719_actuator_8.jpg

Nov 2, 2010 at 10:56 AM
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