Chevrolet Sonic Repair Manual: Tire-to-Wheel Match-Mounting (Vectoring)
Note:
After remounting a tire to a wheel or after replacing a tire
and/or a wheel, remeasure the tire and wheel assembly runout in order to verify
that the amount of runout has been reduced and brought to within tolerances.
Ensure that the tire and wheel assembly is properly balanced before reinstalling
to the vehicle.
- Mark the location of the high spot (3) on the tire as determined during
the off-vehicle tire and wheel assembly runout measurement.
- Place a reference mark (2) on the tire sidewall at the location of the valve
stem (5).
- Always refer to the valve stem as the 12 o'clock position.
- Refer to the location of the high spot (3) by its clock position on the
wheel, relative to the valve stem.
Mount the tire and wheel assembly on a tire machine and break down the bead.
Do not dismount the tire from the wheel at this time.
Rotate the tire 180 degrees on the rim so that the valve stem reference mark (8)
is now at the 6 o'clock position in relation to the valve stem (6). You may need
to lubricate the bead in order to easily rotate the tire on the wheel.
Reinflate the tire and seat the bead properly.
Mount the assembly on the tire balancer and remeasure the runout. Mark the new
location of the assembly runout high spot on the tire.
If the assembly runout has been reduced and is within tolerance, no further
steps are necessary. Balance the tire and wheel assembly, then install the assembly
to the vehicle. Refer to the following:
- Tire and Wheel Assembly Balancing - Off Vehicle
- Tire and Wheel Removal and Installation
If the clock location of the high spot remained at or near the original clock
location of the high spot (7) and the assembly runout has NOT been reduced, the
wheel is the major contributor to the assembly runout concern.
If the clock location of the high spot has moved, however the assembly runout
has NOT been reduced, perform the following steps:
- If the clock location of the high spot (7) is now at or near a position
180 degrees from the original clock location of the high spot, the tire is the
major contributor to the assembly runout concern.
- If the clock location of the high spot is now in-between the 2 extremes,
then both the tire and the wheel are both contributing to the assembly runout
concern. Rotate the tire an additional 90 degrees in both the clockwise and
the counterclockwise directions to obtain the lowest amount of assembly runout.
Special Tools
CH-41013 Rotor Resurfacing Kit
CH-42450-A Wheel Hub Resurfacing Kit
For equivalent regional tools, refer to Special Tools.
Removal Procedure
Ra ...
There are two types of tire and wheel balancing: static and dynamic.
Static balance is the equal distribution of weight around the wheel. Assemblies
that are statically unbalanced cause a bouncing ...
Other materials:
OnStar Services
Emergency
With Automatic Crash Response, the built-in system can automatically connect
to help in most crashes, even if help cannot be requested.
Press to connect to an Emergency
Advisor. GPS technology is used to identify the vehicle location and can provide
critical information to emergen ...
Air Cleaner Element Replacement
Removal Procedure
Disconnect mass air flow sensor wiring harness plug (2) from mass air
flow sensor (3).
Unclip mass air flow sensor wiring harness retainer clip from air cleaner
housing (1).
Remove the air cleaner outlet duct clamp̴ ...
Drive Belt Removal
Special Tools
EN-955 Locking Pins
EN-48488 Holding Wrench
For equivalent regional tools, refer to Special Tools.
Install EN-48488 wrench (1) to the drive belt tensioner.
Note: The drive belt tensioner must always be in a pre-tensioned
state.
Move the dri ...
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