Why would there be a clicking noise when the heater is on?

AIRJUAN2010

MEMBER
2004 PONTIAC SUNFIRE
70 MILES

The clicking noise only happens when the heater or air conditioner is on sound is coming from the inside not the motor

Sunday, March 4th, 2012 AT 10:14 AM

2 Replies

MHPAUTOS

MECHANIC
31,937 POSTS

Does it increase with fan speed or is it a constant noise?

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Why would there be a clicking noise when the heater is on?

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