Chevrolet Sonic Repair Manual: Engine Control

Internal Combustion Powertrain Control

General

Other materials:

Passenger Sensing System
United States Canada The passenger sensing system turns off the front outboard passenger frontal airbag and knee airbag (if equipped) under certain conditions. No other airbag is affected by the passenger sensing system. See Passenger Sensing System  for important information. The ...

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 mov ...

Drive Range, Third Gear (Gen 1)
As vehicle speed increases and operating conditions become appropriate, the transmission control module (TCM) processes input signals from the automatic transmission input and output speed sensors, the throttle position sensor and other vehicle sensors to determine the precise moment to comman ...