What is your question?
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What is your question?
This just happened last week. The van is a 2012 model but, new with only 1000 miles on it. It is not used any more. I believe I fouled the #2 spark plug from rocking the van back and forth to get it unstuck from the snow. I can clear the error codes with an Autel but, they keep returning. The Autel gives me this reading: P0302 $07E8 and Cylinder 2 Misfire. The P0300 just showed up also.
What makes this problem better or worse?
Resetting the PCM smooths out the engine
How long has your 2012 GMC Savana 2500 had this problem?
I just recently got this problem.
1 Reply
Hello, an active misfire in cylinder 2 is what seems to be getting noted. The P0300 is a misfire code that is not identifying a particular cylinder, so essentially - focus on the P0302. Diagnostic testing is needed to find out what has failed -- ignition spark related? Fuel delivery related? Air intake related? Engine base compression related? It'll take hands on testing to figure it out. www.repairpal.com/repair-shops