Chevrolet Sonic Repair Manual: Toe Description
Toe is a measurement of how much the front and/or rear wheels are turned in or out from a straight-ahead position. When the wheels are turned in, toe is positive (+). When the wheels are turned out, toe is negative (−). The actual amount of toe is normally only a fraction of a degree. The purpose of toe is to ensure that the wheels roll parallel.
Toe also offsets the small deflections of the wheel support system that occur when the vehicle is rolling forward. In other words, with the vehicle standing still and the wheels set with toe-in, the wheels tend to roll parallel on the road when the vehicle is moving.
Improper toe adjustment will cause premature tire wear and cause steering instability.
Tires and Wheels Description and Operation (Tire Identification)
Identification
Accessory and warranty replacement must use TPC spec tires.
An outboard orientation stripe is added to the tread surface, with an
offset toward the outboard tire fa ...
Torque Steer Description
A vehicle pulls or leads in one direction during hard acceleration. A vehicle
pulls or leads in the other direction during deceleration.
The following factors may cause torque steer to be more ...
Other materials:
Exterior Lamp Controls
The exterior lamp control is on the instrument panel to the outboard side of
the steering column.
There are four positions:
(Off): Briefly turn to this position
to turn the automatic light control off or on again.
AUTO (Automatic): Turns the headlamps on automatically at normal brightness, ...
Tire and Wheel Assembly Runout Measurement - On-Vehicle
Raise and support the vehicle.
Closely inspect each tire for proper and even bead seating.
If any of the tire beads were not properly or evenly seated, reseat the
tire bead, then proceed to step 4. Refer to Tire and Wheel Removal and Installation.
Wrap the circumferenc ...
Camshaft Timing Chain Inspection
Special Tools
EN-952 Fixing Pin
EN-953-A Fixing Tool
EN-49977-100 Transmitter Disc Fixation
For equivalent regional tools, refer to Special Tools.
Remove the ignition coil. Refer to Ignition Coil Replacement.
Remove the camshaft cover. Refer to Camshaft Cover Replacement.
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