Upcoming Northwest Herald Dr. Gizmo column for Friday March 9, 2012

In this Friday's Dr. Gizmo column appearing in the Northwest Herald a Buick La Crosse encounters a harsh shifting transmission.  Also, a Dodge Caravan makes a clapping sound, a leaky solenoid is not easy to fix, a glitch in the software of a diagnostic tool causes trouble, parts no longer available to repair a luxury car's heater and there is controversy over engine sludge.