Drive Shaft: Inspection: Notes
WARNING:
On vehicles with electronic air suspension, suspension system MUST be disabled prior to hoisting or jacking. See DISABLING ELECTRONIC AIR SUSPENSION
under MAINTENANCE.
If abnormal vibration or driveline noise is present, check the following: Drive Shaft
Check drive shaft for damage or dents that could affect balance. Remove any undercoating adhering to shaft. Check for index marks on yoke and companion flange. If marks are not aligned, disconnect shaft and align index marks so they are as close as possible. Check for missing balance weight(s) or improperly seated or defective universal joint(s).