Question about 2002 Chevrolet Impala

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Car was repaired.repairman says lean code comes on.what's that?

2002 Impala. This is the first major replacement I've had done. Car wouldn't turn over to start. Dealer put in a new BCM module and everything is great except now the lean code light comes on. What could be the cause of that?

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CHECK engine light is coming on with a lean code? this would not be related to the bcm as this is a body control module . you most likely have a vacuum leak somewhere

Posted on Feb 09, 2009

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That means that the mixture of gasoline coming through is not the proper texture it is to "lean". It can be caused by a variety of problems (vacuum leak in the intake manifold, EGR valve failing to close, dirty fuel injectors....If you are not mechanically inclined I would recommend taking it to a reputable shop and having them fix the problem. If you are somewhat mechanically inclined and want to try to tackle this yourself post something to that affect and Me or someone else can walk you through changing the EGR valve (not that hard) for the fuel injectors I would recommend running Chevron or Amoco gas in addition to the Chevron fuel system cleaner. If you have a vacuum leak we can probably walk you through that as well. Just post so and we'll be glad to help any way we can.

good luck

Posted on Feb 12, 2009

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