1991 Buick Park Ave. climate control stopped working. Replaced electronic (dual zone) climate control module, unhooked negative battery cable to reset module and climate control worked for appx. 3 weeks, now same thing again. After replace & reset performed, all functions worked properly. When not working properly, only ''ECON'' is available and compressor will not engage.

1993 Blower Resistor Module

• REMOVAL & INSTALLATION

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Fig. Fig. 1 Blower resistor assembly is underneath the fuse block

REMOVAL & INSTALLATION

1. Disconnect the negative battery cable.
2. Remove the rear sight shield.
3. Remove the fuse/relay block assembly and bracket.
4. Disconnect the resistor module connector.
5. Remove the retaining screws and remove the resistor module.

To install:

1. Inspect the gasket and replace or repair as required.
2. Install the resistor module and secure with screws.
3. Connect the resistor module connector.
4. Install the bracket and fuse/relay block assembly. Install the sight shield.
5. Connect the negative battery cable, and check the climate control system for proper operation

The starter relay is mounted on the starter. To replace you must remove the starter motor which is on the front side of the engine at the transmission bell housing. Make sure you disconnect the battery negative cable before you start work. Mark all starter wires and where they go on the different starter posts.

Fig. 1 Starter mounting

1. Disconnect the negative battery cable.
   
2. Raise the vehicle and support safely.
   
3. Disconnect the wiring from the starter.
   
4. Remove the flywheel shields.
   
5. Remove the starter retaining bolts and remove the starter from the engine.

To install:

1. Position the starter against the engine and install the bolts. Torque to 35 ft. lbs. (47 Nm).
   
2. Connect the starter wiring.
   
3. Install the flywheel shields.
   
4. Lower the vehicle and connect the negative battery cable.
   
5. Check the starter for proper operation.

Hope this helps; also keep in mind that your feedback is important and I'll appreciate your time and consideration if you leave some testimonial comment about this answer.

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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!!

Howdy,
If your AC system is low on Freon, the system goes into a no run mode. If you disconnect your battery for a few minuets the computer resets itself. Then the Freon level can be checked by a friendly shop. Might find it low. Good Luck!!!!!!!!!!!!!!

GM: Electra/Park Avenue/Ninety-Eight 1990-1993 REpair Guide
Blower Resistor Module




Fig. 1 Blower resistor assembly is underneath the fuse block
REMOVAL & INSTALLATION

1. Disconnect the negative battery cable.
2. Remove the rear sight shield.
3. Remove the fuse/relay block assembly and bracket.
4. Disconnect the resistor module connector.
5. Remove the retaining screws and remove the resistor module.

To install:

1. Inspect the gasket and replace or repair as required.
2. Install the resistor module and secure with screws.
3. Connect the resistor module connector.
4. Install the bracket and fuse/relay block assembly. Install the sight shield.
5. Connect the negative battery cable, and check the climate control system for proper operation.

Hope this help (remember rated and comment this).

Most cars if you unhook the negative battery cable for 5 or 10 minutes, the main computer will reset itself.
Of course you'll have to reset the clock, but hopefully that will work if that's the problem.

have you tried changing the stop light switch

IT MEANS U HAVE A LOW SYSTEM REFRIDGERENT CHARGE BECAUSE OF A LEAK AND NEED TO REPAIR IT AND HAVE THE SYSTEM RECHARGED, MOST COMMON SOURCE OF LEAK IS ac COMPRESSOR FRONT SHAFT SEAL

Replace your blower motor relay. It's located under the hood on the firewall passenger side.