View ALL Buick Skylark Parts
If your Buick Skylark failed the emissions test due to high NOX, the EGR Valve is most likely the issue. If your Buick is running rough or has poor fuel mileage, replace the Skylark EGR Valve and gasket.
Do not buy the cheap no name remanufactured or rebuilt Buick Skylark electronic control units, as in our experience most of these ecu’s don’t even work right out of the box. We also carry programmable Buick Skylark control units from AEM that allows you to custom program your Buick Skylark ignition and fuel system.
Replace your faulty Buick Skylark Mass Air Flow Sensor with a Genuine or OE Bosch Unit to keep your Buick running like new.
The Buick Skylark Oxygen sensor is a critical part of the emmision control system and should be replaced as soon as it fails. Make sure to check the Buick Skylark diagnosics codes for proper replacement of the O2 Sensor.