Warning:
Failure to adhere to the following precautions before tire balancing can result in personal injury or damage to components:
Tire and wheel balancers can drift out of calibration over time, or can become inaccurate as a result of heavy use. There will likely not be any visual evidence that a calibration problem exists. If a balancer is not calibrated within specifications, and a tire and wheel assembly is balanced on that machine, the assembly may actually be imbalanced.
Tire and wheel assembly balancer calibration should be checked approximately every 2 weeks, if the machine is used frequently, and/or whenever the balance readings are questionable.
Note:
If the balancer fails any of the steps in this calibration test, the balancer should be calibrated according to the manufacturer's instructions. If the balancer cannot be calibrated, contact the manufacturer for assistance.
Inspect the calibration of the tire and wheel assembly balancer according to the manufacturer's recommendations, or perform the following test.
Specification
Zero within 7 g (¼ oz)
Maximum variation: 7 g (¼ oz)
Maximum variation: 7 g (¼ oz)
Note:
Tire and wheel assemblies which exhibit excessive runout can produce vibrations even if the assemblies are balanced.
It is strongly recommended that the tire and wheel assembly runout be measured and corrected if necessary BEFORE the assemblies are balanced.
If the runout of the tire and wheel assemblies has not yet been measured, refer to Tire and Wheel Assembly Runout Measurement - Off Vehicle before proceeding.
There are 2 types of tire and wheel balance:
Static Balance
Static balance is the equal distribution of weight around the wheel circumference. The wheel balance weights (2) are positioned on the wheel in order to offset the effects of a heavy spot (3). Wheels that have static imbalance can produce a bouncing action called tramp.
Dynamic Balance
Dynamic balance is the equal distribution of weight on each side of the tire and wheel assembly centerline. The wheel balance weights (2) are positioned on the wheel in order to offset the effects of a heavy spot (3). Wheels that have dynamic imbalance have a tendency to move from side to side and can cause an action called shimmy.
Most off-vehicle balancers are capable of checking both types of balance simultaneously.
As a general rule, most vehicles are more sensitive to static imbalance than to dynamic imbalance; however, vehicles equipped with low profile, wide tread path, high performance tires and wheels are susceptible to small amounts of dynamic imbalance. As little as 14–21 g (½â€“¾ oz) imbalance is capable of inducing a vibration in some vehicle models.
Note:
When balancing tire and wheel assemblies, use a known good, recently calibrated, off-vehicle, two-plane dynamic balancer set to the finest balance mode available.
Note:
Carefully follow the wheel balancer manufacturers’s instructions for proper mounting of the center cone (1).
Regard aftermarket wheels, especially those incorporating universal lug patterns, as potential sources of runout and mounting concerns.
Tire and wheel assemblies can be balanced using either the static or dynamic method.
Clip-on Weights
Note:
When balancing factory aluminum wheels with clip-on wheel balance weights, be sure to use special polyester-coated weights. These coated weights reduce the potential for corrosion and damage to aluminum wheels.
These coated weights reduce the potential for corrosion and damage to aluminum wheels.
Note:
Use a nylon or plastic-tipped hammer when installing coated clip-on wheel balance weights to minimize the possibility of damage to the polyester coating.
The contour and style of the wheel rim flange will determine which type of clip-on wheel weight (1) should be used. The weight should follow the contour of the rim flange. The weight clip should firmly grip the rim flange.
Wheel Weight Placement – Clip-on Weights
When static balancing, locate the wheel balance weights on the inboard flange (2) if only 28 g (1 oz) or less is called for. If more than 28 g (1 oz) is called for, split the weights as equally as possible between the inboard (2) and outboard (1) flanges.
When dynamic balancing, locate the wheel balance weights on the inboard (2) and outboard (1) rim flanges at the positions specified by the wheel balancer.
Adhesive Weights
Note:
When installing adhesive balance weights on flangeless wheels, do NOT install the weight on the outboard surface of the rim.
Adhesive wheel balance weights may be used on factory aluminum wheels. Perform the following procedure to install adhesive wheel balance weights.
Note:
Do not use abrasives to clean any surface of the wheel.
Rear Seats
Folding the Seatback
Either side of the seatback can be folded down for more cargo space. Fold a seatback
only when the vehicle is not moving.
Caution
Folding a rear seat with the safety belts still fastened may cause damage to
the seat or the safety belts. Always unbuckle the safety belts an ...
StabiliTrak® OFF Light
This light comes on briefly while starting the engine. If it does not, have the
vehicle serviced by your dealer.
This light comes on when the StabiliTrak system is turned off. If StabiliTrak
is off, the Traction Control System (TCS) is also off.
If the StabiliTrak and TCS are off, the system ...
Water Pump Pulley Replacement (LUW)
Removal Procedure
Remove the air cleaner housing. Refer to Air Cleaner Assembly Replacement.
Support the engine with a suitable jack.
Remove the engine mount. Refer to Engine Mount Replacement.
Raise engine to access the bolts.
Loosen the 3 water pu ...