Chevrolet Sonic Repair Manual: 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 face.
- All GM approved tires (Production, Service and Accessory) have a TPC (Tire Performance Criteria) code.
- A replacement tire that lacks the original TPC code will not meet the performance characteristics of the original tire, even if it is the same brand, model and size.
- Force and Moment
- Residual Aligning Torque (RAT)
- Rolling Resistance
- Braking Traction
- Driving Traction
- Uniformity
- Noise
- Dimensions
- Mass
- Rev/KM
- High Speed
- Air Retention
- Electrical Resistance
- Automatic Mounting
- Endurance (ATE)
- Treadwear
- Chip/tear
- Groove Wander
- Ride and Handling
- Wet/Snow Handling
The TPC system facilitates tire replacement for GM customers on GM vehicle, meeting the same critical performance specifications of GM vehicle original equipment tires.
Tires and Wheels Description and Operation (Equipment)
GM Recommended Tire Balancer
Hunter RF33 Road Force balancer or equivalent with the following options:
Auto Clamp – allows for centering repeatability and prevent damage to
the ...
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 ...
Other materials:
Front Side Door Window Switch Bezel Replacement (Right Side)
Front Side Door Window Switch Bezel Replacement
Callout
Component Name
Preliminary Procedure
Remove the front side door trim. Refer to Front Side Door Trim Replacement.
1
Front Side Door Window S ...
Park Brake and P (Park) Mechanism Check
Warning: When you are doing this check, the vehicle could begin to
move. You or others could be injured and property could be damaged. Make sure
there is room in front of the vehicle in case it begins to roll. Be ready to
apply the regular brake at once should the vehicle begin to move. ...
Drive Range, First Gear Engine Braking (Gen 1)
When the gear selector lever is moved to the Drive (D) range from the Neutral
(N) position, the transmission will provide engine braking. In this operating range,
the normally-low 1234 pressure control solenoid 5 is commanded ON and, in the engine
braking mode, the following changes occur with ...
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