Need help with o2 problem
Feb 3, 2010 | 05:40 PM
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Need help with o2 problem
I installed pacesetter lts on my 2008 5.3l sierra and a nelson performance tune and my o2s are still showing up. I cant get nelson performance to call me back. They say that the o2s are not heating up correct. What can I do to fix this and will this hurt performance?
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