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2013_GMC_BLACK_SLT · 12-30-2012, 07:55 PM

Me too. Called GM Hot line. Phone idiot said wait until after break in. I asked what do you consider break in period. response was 5,000-7,500 miles. I said ok I guess I will just buy a gas station until then.......not to mention I would have ordered the 6.0 liter at that point.

12-30-2012, 07:55 PM	#15
2013_GMC_BLACK_SLT Registered User Join Date: Dec 2012 Location: Niagara Falls, New York Posts: 14	Re: My 2012 GMC Sierra Me too. Called GM Hot line. Phone idiot said wait until after break in. I asked what do you consider break in period. response was 5,000-7,500 miles. I said ok I guess I will just buy a gas station until then.......not to mention I would have ordered the 6.0 liter at that point.