Question about 2003 Buick Park Avenue

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Digital display on climate control is very dim on 2003 park ave.

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  • 34 Answers

It's pretty easy to fix.
1. Remove "wood" trim from below module.
2. Remove 2 screws from tabs at sides of module
3. Remove module (may neeed to pry a little, it's tight.) and connector plug.
4. Remove 2 screws and seperate halves of module
5. Unplug harness to from circuit board (pull the plug, not the wires)
6. Pull the 2 plastic tabs at back of box to remove circuit board, which will now slide out.
7. Inspect the board. On mine, 4 tan components with a single lead coming out each end had cold (gray in color) solder joints. I simply resoldered the joints, reassembled and it's perfect.
8 ***NOTE After reinstalling, start the car and run for a full minute before touching any buttons...this somehow sychronizes the module.

Enjoy!

Posted on Jan 28, 2010

  • kendiy Dec 06, 2010

    Do you have a picture of the 4 tan components that you needed to resolder? Or can you describe where they are located on the PCB?

  • Ray Smythe Dec 06, 2010

    I don't have a picture. The module is in the car. The "tan components" have a lead sticking out each end and soldered to the pcb. They stand away from the board more then 1/4' with nothing but the solder joints and leads holding them. They are the most obvious components on the board. That's all I remember about them. It's been a while since I fixed it. Good luck!

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Oem Radio installation


*** 91 park ave with delco bose =

black = ground
dark green = lights on input
grey = panel lights
pink = on input
yellow = power input
orange = battery power input

nca = shield ground
tan = left fr spkr +
orange/black = left & right spkr -neg
lite green = right fr spkr +

nca = shield ground
dark blue = right rear spkr +
dark green/yellow = right & left spkr - neg
brown = left rear spkr +

purple/white = display dim output
pink = vehicle speed input
-----------------------------------------------------------------------
**** 91 park ave without delco bose =

purple/white = display dim output
pink = vehicle speed input

grey = left front - neg
tan = left front + pos
dark green = right front - neg
light green = right front + pos

black = ground
dark green = display dim signal
grey = panel lights
pink = power antanna
yellow = ign input
orange = battery power
light blue = right rear - neg
dark blue = right rear + pos
yellow = left rear - neg
brown = left rear + pos .

there YA go

Dec 27, 2008 | 1991 Buick Park Avenue

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