Hello everyone, receive a cordial greeting. My Sierra '97 V8 5.7 Lts truck. Ext. Automatic; It has a problem with CIL.5 (according to the computer registration) I have changed spark plugs and cables and the problem persists; And I don't know something else if this has relationship; The oil gauge on the board tends to climb 3/4 every time I accelerate before that. Someone can help me solve the problem, I will thank you.
