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International Automotive Technicians Network
Re: Buick Lacrosse intermittent electrical problems
Posted to Technical Discussion Forum on 1/31/2020

It's a GM 3.6. Most likely it has suffered a catastrophic failure in the timing chains. I kind of doubt that the electrical issues and engine being locked up are related. Could be, not impossible, but unlikely. Until the cause of the lockup is determined then ... Login to read more.