2001 Chevrolet Silverado Rythmic clicking under dash

Tiny
JONC1438
  • MEMBER
  • 2001 CHEVROLET SILVERADO
  • 5.7L
  • V8
  • 4WD
  • AUTOMATIC
  • 20,000 MILES
Clicking happens even with engine off and ignition switch on. Although it is a little faster when engine is running.

Appears to be from behind brake in black box

Happens when all AC off or on and when air is max or normal no changes

Not turn signals they work normal

leaning toward blend door or some ac door actuator
Monday, August 18th, 2014 AT 9:17 AM

1 Reply

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
It is aprobably a relay bad in the underhood fuse box, you will be able to feel which one is clicking remove cove and switch with a like relay and see if it stops if not there is a hsort on thatcircuit someplace.
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Monday, August 18th, 2014 AT 9:39 AM

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