1999 GMC Yukon PINGING NOISE WHEN DRIVING

1999 GMC YUKON
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GADDIS02
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1999 GMC Yukon Engine Size unknown Wheel Drive Type unknown Automatic 210000 miles
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I HAVE A PINGING NOISE WHEN DRIVE UP HILL WHAT DOES THAT MEAN? AND WHY AM I KEEP GETTING LOW OIL IN MY CAR ALSO.

THANKS STEPHEN
Jan 11, 2008 at 9:35 PM
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RASMATAZ
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Check the ignition timing, the knock sensor might not be retarding the timing when its senses vibration/detonation/pinging/spark knock-the engine could be overheating or the octane you're using.
Jan 12, 2008 at 2:54 AM