The crankshaft position sensor, ignition module, and/or powertrain control module (PCM) may fail resulting in illumination of the Check Engine Light with ignition system related fault codes stored in the PCM. Patience is necessary when dealing with this specific situation as normal diagnostic procedures are not effective. In many cases, the best option is to replace parts, one at a time until the fault is corrected.Google+
Car Problem Reports
Chevrolet Lumina Crankshaft Position Sensor, Ignition/Powertrain Control Module May Fail
Chevrolet Lumina Problem
Exhaust & Emissions Affected: 3.8L V6
Average Mileage: 184,808 mi (153,000 mi - 216,616 mi)
Visitor, 2001 Chevrolet Lumina, 216,616 mi
the chevrolet lumina is a oil leak on the crankshaft seal.you think the crankshaft position sensor having a hard time to start the car.on the four the car start.