Chevrolet Sonic Repair Manual: Throttle Body Inspection and Cleaning

Chevrolet Sonic Repair Manual / Powertrain / Internal Combustion Powertrain Control / Engine Control / Air Metering/Acceleration / Throttle Body Inspection and Cleaning

Note:

Over extended time and mileage, deposits may accumulate on the back of the throttle valve plate. The source of the deposit is exhaust gas. Typically these deposits pose no problem. Occasionally the deposit may accumulate to a point where perceived pedal effort or throttle valve movement is effected.

Remove the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct Replacement.
Inspect the throttle body bore and the throttle valve plate for deposits. You will need to open the throttle valve in order to inspect all surfaces.
Clean the throttle body bore and the throttle valve plate using a clean shop towel with an appropriate cleaner.
Install the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct Replacement.

Throttle Body Heater Outlet Pipe Replacement (LUW)

Throttle Body Heater Outlet Pipe Replacement Callout Component Name Preliminary Procedure Drain the cooling system. Refer to Co ...

Throttle Body Installation

Install the throttle body (2) and a NEW throttle body seal ring (1). Caution: Refer to Fastener Caution. Install the 4 throttle body bolts (3) an ...

Other materials:

Battery Load Management
The vehicle has Electric Power Management (EPM) that estimates the battery's temperature and state of charge. It then adjusts the voltage for best performance and extended life of the battery. When the battery's state of charge is low, the voltage is raised slightly to quickly bring t ...

Front Side Door Window Switch Bezel Replacement (Left 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 ...

Crankshaft Balancer Replacement
Special Tools EN-470–B Angular Torque Wrench EN-49979 Crankshaft Shock Mount Retainer For equivalent regional tools, refer to Special Tools. Removal Procedure Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle. Remove front wheelhouse liner exten ...

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