If the controls for the heater and air conditioning (AC) in your 1998 Oldsmobile Intrigue are blinking and will not come on, it could be due to a faulty heater and AC control module. However, before replacing the module, there are a few other things you can check.
1. Check the fuses: There are several fuses that control the heater and AC system. Check the fuses in the fuse box under the hood and in the fuse box inside the vehicle. If any of the fuses are blown, replace them.
2. Check the wiring: Inspect the wiring that connects the heater and AC control module to the other components of the system. Look for any loose or damaged wires. If you find any, repair or replace them.
3. Check the climate control module: The climate control module is responsible for controlling the heater and AC system. If the module is faulty, it can cause the controls to blink and not come on. To test the climate control module, disconnect it from the electrical connector and see if the controls still blink. If they do, the module is faulty and needs to be replaced.
If none of the above solutions work, then the heater and AC control module is likely faulty and needs to be replaced.
Here are the steps on how to replace the heater and AC control module in a 1998 Oldsmobile Intrigue:
1. Disconnect the negative battery terminal.
2. Remove the trim panel below the steering wheel.
3. Remove the four screws that hold the heater and AC control module in place.
4. Disconnect the electrical connectors from the module.
5. Remove the module from the vehicle.
6. Install the new module in reverse order of removal.
7. Connect the negative battery terminal.
8. Turn on the ignition and test the heater and AC controls.
