Chevrolet Sonic Repair Manual: 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 of metric wheel/nuts and the bolts are indicated by the following example: M12 x 1.5.
- M = Metric
- 12 = Diameter in millimeters
- 1.5 = Millimeters gap per thread
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 t ...
P-Metric Sized Tires Description
245/50r16953typeloadindep-passengerttemporarylt-lighttruckspeedsymbolsectionwidth(millimeters)235245275construction(sectionwidth)ddagonal(bas)40sectionwidthsectionheight
Replacement tires should be ...
Other materials:
Tire and Wheel Balancing (Wheel Pilot Bore Greasing)
Beginning with MY 2011 vehicle, pilot bore grease should be applied.
To enable this, grease must be applied to the pilot bore to prevent the
wheel from seizing onto the hub.
Refer to Adhesives, Fluids, Lubricants, and Sealers for pilot bore lubricant
part number.
Do not use any pene ...
Cooling Fan Description and Operation (LWE, LUW)
System Overview
The engine cooling fan system is composed of one cooling fan, 2 relays, the engine
control module (ECM), and the associated wiring. The cooling fan assembly includes
1 resistor mounted in the cooling fan shroud. The cooling fan resistor may be a
stand alone compon ...
Secondary Air Injection System Description
The Secondary Air Injection System aids in the reduction of hydrocarbon exhaust
emissions during a cold start. This occurs when the start-up engine coolant temperature
(ECT) is between −10 to +56°C (14?E33°F), the intake air temperature (IAT) is greater
than −10°C (14°F) and it ...
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