Chevrolet Sonic Repair Manual: Engine Control

Internal Combustion Powertrain Control

General

Other materials:

Crankshaft Front Oil Seal Installation
Special Tools EN-6351 Mounting Sleeves For equivalent regional tools, refer to Special Tools. Clean the sealing surfaces. Slide the EN-6351 sleeves  (2) protective sleeve onto the crankshaft journal. Slide the crankshaft front oil seal (1) over the protective sleev ...

Fuel Pressure Relief
Special Tools EN-34730-91 Pressure Tester For equivalent regional tools, refer to Special Tools. Warning: Gasoline or gasoline vapors are highly flammable. A fire could occur if an ignition source is present. Never drain or store gasoline or diesel fuel in an open container, due ...

Drive Range, Second 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 ...