2020 Chevrolet Sonic Service and Repair Manual

This factory service and repair manual for the 2020 Chevrolet Sonic describes a car narrowed to one powertrain and three equipment levels: the turbocharged 1.4L DOHC inline-four of 83 cubic inches, in a four-door hatchback or sedan, as LS, LT or Premier. That narrowness is useful at the bench, because the torque values, clearances and diagnostic tables given for that engine need no cross-checking against another displacement, and the chassis, restraint and body procedures are shared by every car in the range.

Engines covered

• 1.4L inline-four (83 cu in) — DOHC, turbocharged, gasoline

Body styles covered

• 4-door hatchback
• 4-door sedan

Trims covered

• LS
• LT
• Premier

Known issues on the 2020 Sonic. The federal database holds 10 owner complaints for this model year: four on the electrical system, two on the power train and one on the engine. It is a light record, and it points toward routine service rather than toward a defect. Module and circuit diagnosis, transmission fluid and shift diagnostics, and engine management testing are each covered here with their own procedures, specifications, torque values and wiring diagrams, which is what a shop actually reaches for on a car with a record this quiet.