Chevy Sonic: Shaking When Accelerating → Diagnosis

One of the more common issues that can occur is a vehicle that shakes when accelerating.  If your Chevy Sonic is shaking when accelerating, it’s something that should not be ignored.  While the vibration can be annoying, it is often indicative of a serious problem.   Speed Matters Vehicle speed matters when you feel a … Read more

Chevy Sonic:  Lifter Ticking Diagnosis

One of the most annoying things that you can coming from under the hood of your Chevy Sonic is a ticking lifter.  The ticking noise makes it sound like the engine is going to give up the ghost at any time.  There are a few things that can cause a lifter to tick, such as … Read more

Chevy Sonic: P0171 and P0174 Diagnosis

P0171 and P0174 both indicate that there is a lean condition present in your Chevy Sonic.  By themselves, these are some of the most common OBD2 codes.   When they appear together, it indicates that the entire engine is running lean. Definition Both of these codes are generic, which means they have the same meaning … Read more

Chevy Sonic:  Clutch Slipping → Diagnosis

Your Chevy Sonic’s clutch provides a direct connection between the engine and transmission.  Without it, it can’t move at all. This connection requires a tremendous amount of pressure.  This guide is intended to help you determine why your clutch is slipping on the flywheel. Note:  This article is for manual cars only.  Here’s the automatic … Read more

Chevy Sonic:  Engine Sputtering (Causes + Diagnosis)

A sputtering engine can indicate a number of problems.  If your Chevy Sonic has a sputter, it is most likely going to be caused by bad fuel system, ignition system, MAF sensor, or bad catalytic converter.  Your Sonic’s engine is a giant pump.  It pulls in air (where it is measured by the mass airflow … Read more

Chevy Sonic:  Brake Pedal Going to Floor Diagnosis

The single most important safety feature in your Chevy Sonic is a good set of brakes.  If your brake pedal is going to the floor, it indicates that there is a serious problem in the braking system.  When the pedal goes to the floor, it’s usually caused by a bad master cylinder, leaking brakes, bad … Read more

Chevy Sonic Shifting Hard: Causes + Diagnosis

One of the most common automatic transmission problems is shifting hard.  If your Chevy Sonic has a hard shifting transmission, it can be uncomfortable to drive and a sign of serious problems. If your car’s transmission is shifting hard, it can cause a harsh ride and lead to potential damage over time. Numerous factors can … Read more

Chevy Sonic: Battery Saver Active → Diagnosis

Many modern GM made vehicles have a battery saver feature, this includes the Chevy Sonic.  If you are getting a “battery saver active” message, it means that your Sonic’s electrical system voltage has dropped to a critical level (less than 11.7 volts).  Typical electrical systems run at 13+ volts with the engine running.  The battery … Read more

Chevy Sonic:  Warped Rotors → Symptoms & Causes

  Rotors are metal discs that are visible behind the Sonic’s wheel. They work together with the calipers and brake pads to slow down your Chevy Sonic. Due to braking friction, rotors have to withstand and dissipate a tremendous amount of heat. This causes the rotor surface to be uneven making the brake pedal feel … Read more