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Clicking behind climate control module
Posted: Mon Jan 14, 2013 1:13 pm
by 74b5roadrunner
I can hear intermittent clicking from behind the radio/climate control module. Clicking is there with climate control on or off. Are there any relays hidden back there. Only relays I can find are under hood/back seat.
Re: Clicking behind climate control module
Posted: Mon Jan 14, 2013 2:35 pm
by Archon
Could very well be what is listed in this TSB.
A/C - Module Emits a `Tick-Tock' Noise
File In Section: 01 - HVAC
Bulletin No.: 01-01-38-007
Date: May, 2001
TECHNICAL
Subject:
Tick-Tock Noise From HVAC Module Assembly (Install Spring)
Models:
1997-1999 Buick Park Avenue, Ultra with RPO CJ2
2000-2001 Buick LeSabre with RPO C67
2000-2001 Pontiac Bonneville with RPO C61
Condition
Some customers may comment that the Heater and Air Conditioning (HVAC) Module Assembly emits a repeating "tick-tock" noise.
Cause
The "tick-tock" noise may be due to the two air mix (temperature) actuators on the Park Avenue HVAC module and the mode and air mix (temperature) actuators on the Bonneville and LeSabre HVAC module oscillating/cycling when they have reached a position on the HVAC module.
Correction
Install a deflector spring, P/N 25732764, in the covers of the two air mix (temperature) actuators on the Park Avenue HVAC module and in the covers of the mode and air mix (temperature) actuators on the Bonneville and LeSabre HVAC module.
Re: Clicking behind climate control module
Posted: Tue Jan 15, 2013 8:29 am
by BlackHawk99
Ha!
Mine does the same thing periodically. I've never taken the time to investigate why. Just another thing that I deal with!
Re: Clicking behind climate control module
Posted: Tue Jan 15, 2013 8:53 am
by skregal
If your climate control temp dials are all the way to hot or all the way to cold, try
moving them a little to see if the clicking stops. If it does, then it is the air-mix
actuators.
Re: Clicking behind climate control module
Posted: Tue Jan 15, 2013 10:25 am
by nos4blood70
I have the weird clicks too! But only when running it on auto mode.
Re: Clicking behind climate control module
Posted: Tue Jan 15, 2013 10:45 am
by 97ParkAve
My 97 Park Ave does the same thing, I brought it to the Buick dealer and they told me it was the control head (which I doubt...), but the mechanic told me if you unplug the fuse for the control head for about a minute it will reset and stop the clicking temporarily. It does work just not a permanent fix.
Re: Clicking behind climate control module
Posted: Tue Jan 15, 2013 1:22 pm
by BlackHawk99
skregal wrote:If your climate control temp dials are all the way to hot or all the way to cold, try
moving them a little to see if the clicking stops. If it does, then it is the air-mix
actuators.
Yep, that does make it stop. I have the same issue in my pickup...I just bump them to one setting below the max and it stops.
Re: Clicking behind climate control module
Posted: Tue Jan 15, 2013 3:43 pm
by gweg_b
Mine does it too. Used to annoy me when I originally got the car, but I've managed to filter it out over the years, and I almost never notice it now.