Quote:
Originally Posted by redfire69
Oil level is good. edit: how can I tell if my truck has fuel management. It's a 2500HD, I didn't think they had this feature.
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2012's came with it. GM calls it Variable valve timing.
http://www.chevrolet.com/2012-silver...owertrain.html
Also if you have a DIC, you can switch it unitl it displays the V8/V4 mode and it will tell you as you're driving which mode you're in.