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Ask Gm Tech (Cam) Your Own Question
Gm Tech (Cam)
Gm Tech (Cam), GMC Mechanic
Category: GMC
Satisfied Customers: 1685
Experience:  GM Grand Master Technician 2007. 14 year experience.
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Noise under dash,near floor, just started, 2003 gmc Sonoma

Customer Question

noise under dash,near floor
JA: How long has this been going on?
Customer: just started
JA: What is the model/year of your GMC?
Customer: 2003 gmc Sonoma 4x4 extended cab
JA: Are you hoping to fix this yourself? What have you tried so far?
Customer: no I have appt. for dealer to fix hopefully
JA: Anything else you think the mechanic should know?
Customer: no
Submitted: 12 months ago.
Category: GMC
Expert:  Tim Mohr replied 12 months ago.

Hi, my name is ***** ***** kind of noise is it?

Customer: replied 12 months ago.
sounds like a fan or circulating noise
Customer: replied 12 months ago.
sounds like something is running
Customer: replied 12 months ago.
floor right under dash in center
Expert:  Tim Mohr replied 12 months ago.

is kind of like a clicking noise, real fast clicking?

Customer: replied 12 months ago.
steady low volunm noise
Expert:  Tim Mohr replied 12 months ago.

this is usually caused by a bad blend door actuator and is a common problem with these, the blend door actuators, there are 3 of them, one for temp, one for mode, for the vents, defrost and floor, and one for recirc of the a/c system, the plastic gears strip out over time and the motor will continue to run, we do alot of these for this exac problem,are you planning to fix this yourself?