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:

Fog Lamps (RS)
To replace the front fog lamp bulb: Locate the fog lamp located under the front fascia. Remove the cap from the back of the fog lamp assembly. Disconnect the electrical connector from the fog lamp bulb assembly. Remove the bulb by turning it counterclockwise and pulling it straight out ...

Brake Pressure Modulator Valve Bracket Replacement
Removal Procedure Remove the brake pressure modulator valve (BPMV) and bracket assembly. Refer to Brake Pressure Modulator Valve Replacement. Remove the BPMV bolts (1). Remove the BPMV bracket. Installation Procedure Install the BPMV br ...

Engine Coolant Fan Shroud Replacement (LDE LUW)
Engine Coolant Fan Shroud Replacement Callout Component Name Preliminary Procedure Remove the radiator surge tank. Refer to Radiator Surge Tank Replacement. Unclip transmission cooler lines from shroud if equipped. Un ...

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