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2001 Chevrolet Silverado 2500 HD

Question: engine pings when it heats up

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wrenched, 6.0L V8, Buhl, ID, September 09, 2010, 12:25

Technician

The engine pings when it heats up- more under a load. The check engine light came on and gave a knock sensor code P0332 and P0463 fuel level sensor? I don't know what these have in common. Will changing the knock sensor fix it? It has pinged a little for a while and now its getting worse mostly when it heats up. Any help would be appriciated-thanks-Ken

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Answer #1

dandd September 09, 2010, 14:26

Master

The Knock Sensor code could mean that the Knock Sensor is not 'hearing' the Engine Ping when it gets hot.
How hot does your engine get? Does it get abnormally hot? If so, then you need to address why this is happening.
The Fuel Level Sensor is a somewhat common code on GM and means that you will most likely have to replace the level sensor, but it has nothing to do with the other 2 issues.

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wrenched, September 09, 2010, 14:58

Technician

Thank you for the response. Thanks alot for the fuel sender info. The gauge does goof up now and again. The engine has not been heating up any more than normal-at least on the gauge which is about at the 200 mark. Nothing to indicate that it is overheating just pinging when it reaches operating temperature. We just put some premium gas in it and some fuel conditioner and it stopped pinging. Could we have a carbon problem or could something else be off? It should run on regular fuel shouldn't it? Thanks again-Ken

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Visitor, October 14, 2010, 20:43

I also have a 2001 chevy 2500 hd with a 6.0 and have replaced the knock sensors when i bought it cause it was throwing that code but right after i did , it really started pinging not sure why and like you said its only when warm.... It never did before i replaced the sensors.

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