Chevrolet Sonic Repair Manual: Lead/Pull Description
At a constant highway speed on a typical straight road, lead/pull is the amount of effort required at the steering wheel to maintain the vehicle's straight path.
Important:
Vehicles will tend to lead/pull in the direction of the road slope as part of normal operation.
Lead/pull is usually caused by the following factors:
- Road slope
- Variability in tire construction
- Wheel alignment (front cross caster and camber)
- Unbalanced steering gear
- Electronic Power Steering (EPS) steering position and torque sensors not calibrated correctly, if equipped.
Hub/Axle Flange and Wheel Stud Runout Inspection
Special Tools
GE-8001 Dial Indicator Set , or equivalent
Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle.
Mark the location of the wheels to the wheel studs and mar ...
Metric Wheel Nuts and Bolts Description
Metric wheel/nuts and bolts are identified in the following way:
The wheel/nut has the word Metric stamped on the face.
The letter M is stamped on the end of the wheel bolt.
The thread sizes ...
Other materials:
Backup Lamp Bulb Replacement (Sedan)
Backup Lamp Bulb Replacement
Callout
Component Name
Preliminary Procedure
Remove the tail lamp assembly. Refer to Tail Lamp Replacement.
1
Back Up Lamp Bulb Socket
Procedure
Rotate the back u ...
Crankshaft Rear Oil Seal Installation
Special Tools
EN-658-1 Installer
EN-235-6 Installer
For equivalent regional tools, refer to Special Tools.
Slide the crankshaft rear oil seal (2) across the EN-235-6 installer (1).
Install the crankshaft rear oil seal (1) with EN-235-6 installer ...
Electronic Ignition System Description
Electronic Ignition System Operation
The electronic ignition system produces and controls the high energy secondary
spark. This spark ignites the compressed air/fuel mixture at precisely the correct
time, providing optimal performance, fuel economy, and control of exhaust emissions.
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