2019 Chevrolet Sonic Service and Repair Manual

This factory service and repair manual for the 2019 Chevrolet Sonic has a single engine to document, the turbocharged 1.4L DOHC inline-four of 83 cubic inches, and that simplifies everything downstream of it. One set of injection, boost and emissions specifications applies to every car, whether it is a four-door hatchback or a four-door sedan and whether it carries LS, LT or Premier equipment. The differences that remain are matters of equipment rather than mechanicals, and the wiring diagrams carry those circuits along with the shared ones.

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 2019 Sonic. Eight owner complaints have been logged against this model year in the federal database, two of them on engine and engine cooling and one each on the engine itself and the electrical system. Nothing in that pattern is dramatic, but it does mark where a turbocharged four earns attention: coolant routing and thermostat operation, charge-air plumbing, and the sensors that report temperature and pressure to the control module. Test procedures, specifications and wiring diagrams for those circuits are all in this manual.