Another Vortec Oil Consumption Lawsuit Hits the Docket

Posted on
Tagged
#engine #lawsuit
Author
Scott McCracken
Source
carcomplaints.com
Isolated Vortec engine on a white background

A new class-action is accusing General Motors of knowingly selling vehicles that consume abnormally high quantities of oil. It's not the first time GM has been sued for oil issues in the Vortec engine. Specifically (and stick with me here) the Generation IV 5.3L V8 Vortec 5300 LC9 engine.

As with previous lawsuits, the plaintiffs say low-tension piston rings, oil spray from the Active Fuel Management (AFM) system, and agressive vacuuming from the engine's positive crankcase ventilation (PCV) system are to blame.

Essentially a lot of oil is burning up inside the combustion chamber allowing the oil level in the crankcase to reach dangerously low levels. And because of the design of GM's oil monitoring system drivers might not be aware of the problem until much too late.

GM changed their Vortec design for the engine's 5th generation with an improved sealing ring package, a shield to deflect oil spray away from the piston skirts, baffled PCV orifices, and the reintroduction of an oil level sensor.

More information on carcomplaints.com

Want to Learn More?

5.3L Vortec 5300 Engine Oil Consumption

From 2010-2014 GM's Vortec 5300 engine had multiple design flaws that led to an excessive oil consumption responsible for soiled spark plugs, bent pushrods, and timing chain wear to name a few. The problem was compounded by an inadequate oi

Oil being poured into an engine

Related Chevrolet Generations

At least one model year in these 6 generations have a relationship to this story.

We track this because a generation is just a group of model years where very little changes from year-to-year. Chances are owners throughout these generation will want to know about this news. Click on a generation for more information.

  1. 2nd Generation Avalanche

    Years
    2007–2013
    Reliability
    56th of 80
    PainRank
    12.69
    Complaints
    373
    Continue Front 3/4 view of a Avalanche
  2. 1st Generation Colorado

    Years
    2004–2012
    Reliability
    48th of 80
    PainRank
    10.08
    Complaints
    378
    Continue Front 3/4 view of a Colorado
  3. 1st Generation Express

    Years
    1996–2020
    Reliability
    15th of 80
    PainRank
    1.43
    Complaints
    74
    Continue
  4. 2nd Generation Silverado 1500

    Years
    2012–2013
    Reliability
    62nd of 80
    PainRank
    18.65
    Complaints
    85
    Continue Front 3/4 view of a Silverado 1500
  5. 10th Generation Suburban

    Years
    2007–2014
    Reliability
    50th of 80
    PainRank
    10.7
    Complaints
    563
    Continue Front 3/4 view of a Suburban
  6. 3rd Generation Tahoe

    Years
    2007–2014
    Reliability
    45th of 80
    PainRank
    8.9
    Complaints
    443
    Continue Front 3/4 view of a Tahoe

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