2006 Chevy Trailblazer

SUSPENSION NOISE & VIBRATION DIAGNOSTIC CHART

CAUSES RELATED TO VEHICLE SPEED:

* Wheel/tire imbalance

* Bent rim

* Out-of-round tire and/or rim

* Driveshaft imbalance (RWD primarily)

* Driveshaft bent

* Defective or misaligned U-joint

* Defective CV joint

* Excessive driveshaft angle (4x4 trucks)

* Worn wheel bearings

* Exhaust vibration

* Missing chassis/drivetrain damper weights

CAUSES RELATED TO ACCELERATION, DECELERATION & SPEED CHANGES:

* Worn differential/transmission/transaxle gears or bearings

* Loose/worn suspension components

* Engine vacuum leaks

* Exhaust backfiring

* Torque converter clutch lockup & release

* Loose/broken motor, transmission or transaxle mounts

CAUSES RELATED TO ENGINE RPM:

* Loose/broken motor mounts

* Engine misfire

* Loose/broken accessory mounting bracket

* Defective accessory shaft bearings

* Damaged cooling fan or clutch

* Loose/worn V-belt

* Defect in power steering system

* Loose/missing torque converter bolts