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Old 11-02-2006, 06:38 PM   #1
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Default Dual ECC problem ? Any gurus out there ?

Neighbors Park Ave has a dual ECC and it seems like when the temp is changing you can hear a clickclick,clickclick,clickclick, coming from behind the radio. It sems as though the door maybe having trouble opening and closing or is this normal ? Now my bonnies acuator is behind the glove box I assume this is behind the radio / ECC faceplate as this is where the noise comes from. Anyone ever work on this system ? Can you access the acuator from taking the radio or ECC out ? Is this an acuator going bad or will it start to flash the temp if there is a problem ? Thanks fellas !
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Old 11-02-2006, 10:16 PM   #2
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From a TSB

Quote:
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.
1. PARK AVENUE:

Remove the two air mix (temperature) actuators from the HVAC module assembly. Refer to the Air Mix Actuator - Driver and the Air Mix Actuator - Passenger replacement procedures in the HVAC Systems - Automatic sub-section of the Service Manual.

BONNEVILLE AND LESABRE:

Remove the mode and air mix (temperature) actuators from the HVAC module assembly. Refer to the Mode Actuator and the Temperature Actuator replacement procedures in the HVAC Systems - Manual sub-section of the appropriate Service Manual.
2. Remove the retaining screws from the covers of the actuators.
3. Install a deflector spring (1), P/N 25732764, on the covers (2) of the actuators. Apply excess lubricant from inside the actuator onto the deflector spring.
4. Install the covers on the actuators.
5. lnstall the cover retaining screws.

Tighten

Tighten the screws to 1.4 N.m (12 lb in).
6. PARK AVENUE:

Install the two air mix (temperature) actuators to the HVAC module assembly. Refer to the Air Mix Actuator - Driver and the Air Mix Actuator - Passenger replacement procedures in the HVAC Systems - Automatic sub-section of the Service Manual.

BONNEVILLE AND LESABRE:

Install the mode and air mix (temperature) actuators to the HVAC module assembly. Refer to the Mode Actuator and the Temperature Actuator replacement procedures in the HVAC Systems - Manual sub-section of the appropriate Service Manual.
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Old 11-03-2006, 09:48 AM   #3
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Thanks for the heads up info, do you think it hurts anything to leave it alone other than the noise ? Any idea if it can be fixed fairly easy ? I wonder if it could be done by removing the radio ? Also it it still heating and cooling the proper way ? Thanks again !
I guess im fuzzy on what the fix is doing ??
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Old 11-03-2006, 01:25 PM   #4
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anyone have a manual that shows if you can chg the drivers/main acuator by going thru the hole where the radio or ECC panel is ? It sure sounds like its right behind there... That would probably be too easy though ...
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Old 11-03-2006, 09:42 PM   #5
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where could I locate the info to see how to chg or get at the acuator ?
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Old 11-04-2006, 11:01 PM   #6
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I can post where the actuators are on a 2000 Bonneville, but that likely isn't going to help you much for the Buick. To get that information, there are probably a few options...some better than other. You could get a FSM or Chiltons for that vehicle. You could purchase a subscription to AlldataDiy. As it'* the neighbor'* car, you're not likely to like those options. Might be something for the neighbor to consider.

The other options are to see what the public library may have for service manuals, and finally - just getting in there and seeing what you find.
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