2013 Yukon 6.2 with p0304 code

[mountie]

I just replaced a broken valve spring on my 2013 Denali. Had it towed to a local shop that said they did diagnostics on it and gave me a quote for $5500 to replace the lifters. Told him I’d do it myself and had him tow it to my house. Spent 45 minutes removing the valve covers and found a broken valve spring. Got lucky that there was no damage to the valve or piston and got it back up and running.View attachment 440732

That is an 'ouch'....... I hope my '05 5.3 doesn't do that..... Or is it on your newer engines?

 

[wjburken]

That is an 'ouch'....... I hope my '05 5.3 doesn't do that..... Or is it on your newer engines?

That is in my 2013 Yukon 6.2. Had the same thing happen on my 2007 Yukon 6.2.