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Q: What make an engine run hot in only one cylinder? on 1996 GMC Suburban 2500

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misfire code p-1345
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All OBD II misfire codes are as follows, PO 300 to PO 308 for a V8! Why do you think it's overheating on one cylinder only? Do you mean misfire on only one cyl.?
Thanks for your response. The information on OBD-ll code is new to me I will recheck that. the reason for one cylinder running hot is just a feel. It looks like the heat off the engine is more pronounced to the rear of the engine (#7 cylinder). The temp. gauge reads normal along with oil pres. I am going to borrow an infrared eat gun to see more accurately. Could the rear main bearing? and if so is there any way to check without pulling oil pan?