GM 3.8L Index of Articles

A trouble code P0107: MAP Sensor Circuit Low Voltage is probably one of the most common MAP sensor trouble codes that'll pop up and illuminate the check engine light. In this tutorial I'll explain what this trouble code means. I'll also talk...   read more >>

NOTE: See vehicle application below: This simplified alternator circuit wiring diagram applies to the following vehicles: 1996, 1997 3.8L Buick LeSabre. 1996 3.8L Buick Park Avenue. 1996, 1997 3.8L Oldsmobile Eighty-Eight...   read more >>

The manifold absolute pressure (MAP) sensor is not a hard component to test. It can easily be tested with a multimeter -no scan tool required. Why test it? To make sure its bad before buying it, especially since quite a few other things can...   read more >>

NOTE: See vehicle application below: This simplified blower motor circuit wiring diagram applies to the following vehicles with automatic A/C controls: 1996, 1997, 1998, 1999 3.8L Buick LeSabre. 1996 3.8L Buick Park Avenue....   read more >>

A trouble code P0123: Throttle Position Sensor Circuit High Voltage is a very common trouble code that is generally caused by a bad throttle position sensor (TPS). In this tutorial I'll explain what this trouble code means. I'll also talk about...   read more >>

NOTE: See vehicle application below: This simplified starter motor circuit wiring diagram applies to the following vehicles: 1996, 1997, 1998 3.8L Buick LeSabre. 1996, 1997 3.8L Buick Park Avenue. 1996, 1997, 1998 3.8L...   read more >>

A trouble code P0121: Throttle Position Sensor Performance Problem lets you know that there's a malfunction with the throttle position sensor. In this tutorial I'll explain what this trouble code means. I'll also talk about some of the tests you...   read more >>

NOTE: See vehicle application below: This simplified ignition system wiring diagram applies to the following vehicles: 1996, 1997 3.8L Buick LeSabre. 1996, 1997 3.8L Buick Park Avenue. 1996, 1997 3.8L Buick Riviera....   read more >>

NOTE: See vehicle application below: This simplified ignition system wiring diagram applies to the following vehicles: 1998 3.8L Buick LeSabre. 1998 3.8L Oldsmobile Eighty-Eight (LS). 1998 3.8L Pontiac...   read more >>