Service Action: B46 and B48 Engines - Check and Replace Crankshaft Guide Bearing. The upper crankshaft guide bearing may wear out prematurely. The wear on the guide bearing can cause the clutch pedal to malfunction during shifting. The Engine Malfunction Warning may be illuminated and a fault will be stored in the DME memory for the crankshaft sensor. Noise may be heard from the lower engine and transmission bell housing area and engine damage can occur in rare occasions.
