Chevrolet Sonic Repair Manual: Tire and Wheel Balancing (Road Force Variation (RFV))
- ALL wheel/tire assemblies must have a RFV within spec before being mounted on vehicle.
- RFV is unrelated to tire balance.
- RFV is identifying the stiff portion of the tire and determining if it is within spec.
- If RFV is too high, it will result in a vibration condition.
- Do not attempt to measure RFV on tires that have temporary flat spots. If necessary, drive the vehicle to relieve the flat spots.
- Prior to measuring for RFV, the tires must be inflated to the specification on the label.
- Passenger Cars (including Crossover Vehicles) = 18 lbs.
- Truck Tires: (P) - metric = 24 lbs.
(LT) - metric = 35 lbs.
- It is recommended that RFV measurements are made prior to installation of balance weights. Once adequate road force levels have been achieved, move on to balance the assembly.
Important:
If a wheel/tire assembly is not within the RFV specification after match mounting, the tire must be returned to the tire manufacturer. DO NOT install tire/wheel assembly on a vehicle if it exceeds the RFV specification.
Tire and Wheel Balancing (Collet Cone Selection)
Important: Never use the hub cap bore to center the wheel onto
the balancer. The pilot bore (on the hub side of the wheel) is machined
to be concentric to very tight non - standard tole ...
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 Adhesi ...
Other materials:
Steering Wheel Controls
Some audio steering wheel controls could differ depending on the vehicle's options.
Some audio steering wheel controls can be adjusted at the steering wheel.
/
: Press to interact with the available
Bluetooth or OnStar systems.
/
: Press to decline an incoming call,
to end speech ...
Fabric/Carpet/Suede
Start by vacuuming the surface using a soft brush attachment. If a rotating brush
attachment is being used during vacuuming, only use it on the floor carpet. Before
cleaning, gently remove as much of the soil as possible using one of the following
techniques:
Gently blot liquids with a pap ...
Stationary Window Waterleak Repair
Warning: If any water enters the vehicle interior up to the level
of the carpet or higher and soaks the carpet, the sensing and diagnostic module
(SDM) and the SDM harness connector may need to be replaced. The SDM could be
activated when powered, which could cause deployment of the air ...
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