Can someone help me with a OBDII code here?
I was towing a truck with my trailer today and the 99 silverado fell on it's a*s while pulling a hill. I've got 2 codes.
PO300, which is multiple cylinder mis-fire.
PO463, which says, Fuel level sensor circuit high input.
Question is: What is the 463 sensor, or? What does "high input" mean. And how do I resolve the problem.
I'm sure the 300 code is there because of the 463.
The truck is stumbling & misfiring, pinging under any kind of load, and got really warm when it started. 235 degrees! Probably due to a lean condition, but????
Where do I go from here?
I had just filled it with gas about 7 miles prior to this.
Bad fuel? I'm not thinking so but?
Oh yeah, 6.0 with Hypertech program, but only changed tire size for speedometer, all other settings are stock. 87 octane. Automatic, 4x4
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Some mornings, it's just not worth chewing thru the leather straps"