If I recall, the digital display on the Buick control module is "back-lit" with a couple of bulbs. Without the back light, you can't see the display. Remove the module and see if you have any burnt out bulbs. Bulbs may be a bit hard to find at your local parts shoppe and you may have to go to a GM dealer with your old bulb(s) to get an exact match. Good Luck.
Replace it
SOURCE: reset climate control on 92 park ave , just blinks
try disconnecting the battery for 5 minutes, also make sure the system has a full charge, a low refridgerent charge will trigger this blinking light.
SOURCE: 1991 Buick Park Ave. climate control stopped
Check to make sure that you have enought freon to engage the compressor, then you will need a flow chart to take you through the rest of the steps necessary to diagnos this problem. The Electrical system manual for Buick is the only one that will have the proper information for you to walk through the steps to dead head it. There is a HVAC programer that is behind the floor heater duck work. It has a numbering system that goes from (2) rows of pins that go 1-16 for terminals.On terminal 5-7 with ignition in run position, you need bat. votage. Terminal 10 & 11 you need 4-5 volts. Neither 10 or 11 should be unplugged just yet since 10 feeds 11 pin. If there isn't any voltage at these pins, check for corrosion on the pins theirself, or for the pin that it may have slipped back out of the connector. Good luck.
SOURCE: wheres the fuse that controls the passinger side
there is only one fuse which controls both side climate control
SOURCE: Digital display on climate control is very dim on
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!
SOURCE: the a/c will not work on my 91 park ave. the
Hi,
After all said and done regarding the problem with your car AC,it can be deduced that the problem is from the expansion valve in the system,it's bad and needs a replacement,
However,before replacing the exp valve,carry out this solution;
try disconnecting the negative battery cable, then hook it back up and start the engine to see if the compressor will run momentarily. If it is indeed low on refrigerant, you can add some while the compressor is running.If the compressor doesn't work,then proceed with the replacement of the expansion valve.
Good luck!!
Fig. Fig. 1 Blower resistor assembly is underneath the fuse block
REMOVAL & INSTALLATION
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Actually, I pulled the circuit board from the unit and re-soldered the bad connections. A couple of the resistors were actually loose. Now it works as it should.
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