Diagnostic Procedure # 2 - Alignment

Wheel Alignment - Measure the front wheel alignment. For out-of-specification vehicles, align to the "1991-94 Preferred Alignment Specifications" stated in this article.

^ Spin the front tires to be sure that the front hubs are unlocked. If hubs are unlocked, the axle shaft will not rotate with the wheels

^ Do not adjust wheel alignment to correct for brake pull if the vehicle does not have pull during non-brake applications

^ Set the tire pressure to the specification on the certification label

Compare the installed tires and wheels to the certification label. If the tires and wheels match, continue with the Diagnostic Procedure.

^ IF THE TIRES AND WHEELS DO NOT MATCH THE CERTIFICATION LABEL, compare tires and wheels to RPO list and set tire pressure to the correct value

^ IF THE TIRES AND WHEELS DO NOT MATCH CERTIFICATION LABEL OR RPO AVAILABILITY, swap known good tires and wheels (as called for by the certification label or RPO list) for the purposes of evaluation only

Drive vehicle after alignment is performed.

^ Vehicles which exceed the maximum average caster value shown above may result in shimmy concerns

^ Vehicles operated below the minimum average caster value shown can result in wander and poor steering returnability concerns

If the vehicle is not within these minimum and maximum average caster values, or if the vehicle has experienced any of these listed steering/handling concerns, the average caster should be set in accordance with ride height/caster chart in the Service Manual.