I have a 99 Suburban K1500 4x4, 5.7L. It has 175K miles on it. I drove it sat on about 125 mile trip and parked it in the garage. I started it on Sunday morning and instantly noticed a load knocking noise that appears to be coming from the passenger side of the engine. I am thinking that with the mileage it may be a rod. How can I tell for sure if it is a rod? Is it safe to drive?
Brian
Does it knock when you first start it or all the time?, Is it worse when it gets hots? How is the oil pressure too and when it the last time you changed the oil and filter and what grade oil are you using. Also I recommand that you do not drive it until we get a better understanding of the problem.
Would my knock sensor be throwing a code if it was a rod knocking?
Sounds like its time to buy a new vehicle.
No, the rod knock has a difference frequency than a ping/knock that the knock sensor listens for.
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