Quote:
Originally Posted by ZL1 affair
I would highly doubt that sound is coming from the fuel line... Sometimes it can be hard to pinpoint a high pitch squeak like you have... Have you tried engaging the clutch to see if the sound changes or goes away? Does the sound very with engine speed? I am surprised they didn't remove the belts and run it before replacing the SC... Would have known if it was accessory / SC related right away.
I have heard LS engines with bad lifters that sound like this...
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The sound doesn't change when I engage the clutch. Also, it doesn't vary with speed. It becomes less noticeable after the car warms up, but it's still there. My dealer doesn't want to swap things out until they know exactly what the problem is. They have been in contact with GM's engineers. Hopefully, the dealer that Speedylt4 brought his car to can figure something out and document it with GM. When is the car going in for the fuel line replacement?