Charge the a/c with refrigerant. But being a '92, it will need to be converted to R134a, provided your compressor is good (prolly not) it would cost around $300,
The check engine light on a Buick Regal can be reset with a special diagnostic scanner. This can be performed at a car dealership or service garage.
You can only reset it with an OBDII diagnostic scaner
with hand held computer (scanner)
how do you reset check engine light in 2008 buick lucerne
Figure out what tripped the code and fix the problem
Disconnect the negative battery cable for 10 seconds.
= How do you reset change oil soon light on 1993 buick park avenue? =
To reset the "Service Vehicle Soon" light on a 2000 Buick Century, first ensure that any underlying issues have been addressed, as the light indicates a problem. Then, turn the ignition key to the "On" position without starting the engine. Press the gas pedal three times within five seconds, then turn the ignition off. When you start the vehicle again, the light should be reset.
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