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Clicking noises inside the cab of the truck. ( 1996 chevy silverado 1500, 5.0 L extended cab.)

1996 CHEVROLET SILVERADO
230,000 MILES • V8 • 2WD • AUTOMATIC
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TELLATRAM1
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  • 2 POSTS
When I turn on my 1996 chevy silverado 1500 (5.0 L, extended cab) truck there is a clicking sound and it sounds like it is coming from under the glove compartment. There is a black box under the glove compartment and it looks like the heater air flows through there because it warms up when I have the heater on. Do you know what that could be and if you do how do you stop the clicking noise?
Feb 10, 2011 at 10:27 AM
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WRENCHTECH
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  • 20,760 POSTS
Are you having any problem with temperature control of the heater/AC?
Feb 10, 2011 at 11:04 AM
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TELLATRAM1
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  • 2 POSTS
No the heater works fine but the large black box under the glove compartment heats up when I have the heater on. Another thing that might help you figure out the problem is when I warm up the car in the morning the clicking sound starts up but after I have driven my truck for a while the clicking sound stops.
Feb 11, 2011 at 11:12 PM
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WRENCHTECH
  • ✓Experienced Mechanic
  • 20,760 POSTS
It's nearly impossible to identify a noise without hearing it. I was thinking you may have a stripped out blend door actuator but if your temp controls are working OK,that's probably not the case. You could have a blower motor making noise or an electrical relay having a problem but it's hard to say what it could be.
Feb 12, 2011 at 4:36 AM
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