Quote:
Originally Posted by LS6-M22
Not me but can you be hearing something related to the DI high pressure fuel system?
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Not sure. Like I said, I only hear it on cold start up. Starts after about 3-5 seconds and lasts maybe 30 seconds. It's very slight, but in the garage with the windows down and tunes off I can hear it. I'd hate to make a dealer trip for this...but I will need a rear diff fluid change down the road anyway. So if need be I'll have them look at it then if nobody here can confirm what it may be.
Really reminds me of a pulley/belt chirping noise. Hard to say...