There are over 225 complaints on CarComplaints.com related to excessive oil consumption from Chevrolet engines. Many owners of Suburbans, Avalanches, Prizms, Silverados, Tahoes and Aveos are claiming they need a new quart of oil every 1000-1500 miles without any visible leaks. In addition owners are claiming their vehicles feel like they're driving through mud, or being bogged down.

Below is a partial list of vehicles with oil consumption problems as reported by their drivers on CarComplaints.com. As you can see, this is not isolated to a single year or make, although it does seem to affect larger 2007 models more than most.

• 2000 Chevrolet Prizm
• 2001 Chevrolet Prizm
• 2002 Chevrolet Prizm
• 2003 Chevrolet Silverado
• 2005 Chevrolet Aveo
• 2007 Chevrolet Avalanche
• 2007 Chevrolet Silverado
• 2007 Chevrolet Suburban
• 2007 Chevrolet Tahoe
• 2008 Chevrolet Impala
• 2008 Chevrolet Suburban
• 2009 Chevrolet Suburban

About Oil Consumption

All engines require oil to lubricate and protect the moving parts of an engine from wear. These parts include cylinder walls, pistons and piston rings. When a piston moves down its cylinder, it leaves a thin film of oil on the cylinder wall. This tiny amount of oil partially gets consumed by the combustion process and therefore it's normal to see a small amount of oil reduction is the engine.

What's not normal, however, is to see the rapid and extreme oil consumption of some Chevrolet engines.

What Causes Chevrolet's Oil Problem?

According to a Chevrolet service bulletin, the most common cause is stuck oil control rings. Generally the stuck oil control rings are the result of excessive oil on the cylinder walls and this excessive oil can come from the PCV system and/or the AFM pressure relief valve in the oil pan.

Upon inspection of an engine experiencing this problem, you will typically see an oil-fouled spark plug. Although excessive oil may also show up in the intake manifold.

Actions You Can Take & Possible Recourse

Let Chevrolet know you want any oil related repairs or costs to be covered!

This step is crucial. Don't just complain on forums; The sites below actually manage your complaint in ways that allow useful statistics and they report dangerous trends to the authorities. Law firms often contact these sites for help with Class Action lawsuits. Make sure to file your complaint on all three sites, we can't stress that enough.

1. Step 1: File Your Complaint at CarComplaints.com

   CarComplaints.com is a free resource dedicated to uncovering car problem trends and informing the consumer. File Your Complaint

2. Step 2: Notify the Center for Auto Safety

   The Center for Auto Safety is an organization that informs consumers about auto safety issues. Notify the CAS

3. Step 3: Report a Safety Concern to the NHTSA

   The NHTSA directs highway safety and has the authority to force recalls to be issued following investigations. Report Your Concern

Have Your Say & Spread the Word

Let us know if you've experienced this problem, know of a potential fix or just want to voice how frustrated you are: