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We just rebuilt the motor on a 5.7 silverado, 1997 model, we are getting several trouble codes, I think the problem has to do with my son taking off the mufflers, what do you think.
We clear all the codes and new one keep coming up.
The first code was crank sensor.
The second was cam position sensor.
The third was oxygen sensor bank two efficiency too high.
I think it has to do with no back pressure, HELP.
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∙ 14y ago
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