Question about GMC Sierra 1500
There's a lot of things, or combination of things, that could be causing the problem but you could have valves that are adjusted just a little to tight which can cause a misfire as the engine warms up. Other things that come to mind are vacuum leaks, fuel pressure regulator leak, or an injector problem. Don't have a silver bullet for you but that's where I'd start my search. Hope this helps and good luck!
Posted on Mar 30, 2011
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Posted on Jan 02, 2017
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